Title 14

PART 25

Part 25 - Airworthiness Standards: Transport Category Airplanes

PART 25 - AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES Authority:49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704. Source:Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.

14:1.0.1.3.12.0.74.1.5APPENDIX
   Special Federal Aviation Regulation No. 13
14:1.0.1.3.12.0.74.1.6APPENDIX
   Special Federal Aviation Regulation No. 109
14:1.0.1.3.12.1SUBPART A
Subpart A - General
14:1.0.1.3.12.1.74.1SECTION 25.1
   25.1 Applicability.
14:1.0.1.3.12.1.74.2SECTION 25.2
   25.2 Special retroactive requirements.
14:1.0.1.3.12.1.74.3SECTION 25.3
   25.3 Special provisions for ETOPS type design approvals.
14:1.0.1.3.12.1.74.4SECTION 25.5
   25.5 Incorporations by reference.
14:1.0.1.3.12.2SUBPART B
Subpart B - Flight
14:1.0.1.3.12.2.74SUBJGRP 74
   General
14:1.0.1.3.12.2.74.1SECTION 25.21
   25.21 Proof of compliance.
14:1.0.1.3.12.2.74.2SECTION 25.23
   25.23 Load distribution limits.
14:1.0.1.3.12.2.74.3SECTION 25.25
   25.25 Weight limits.
14:1.0.1.3.12.2.74.4SECTION 25.27
   25.27 Center of gravity limits.
14:1.0.1.3.12.2.74.5SECTION 25.29
   25.29 Empty weight and corresponding center of gravity.
14:1.0.1.3.12.2.74.6SECTION 25.31
   25.31 Removable ballast.
14:1.0.1.3.12.2.74.7SECTION 25.33
   25.33 Propeller speed and pitch limits.
14:1.0.1.3.12.2.75SUBJGRP 75
   Performance
14:1.0.1.3.12.2.75.8SECTION 25.101
   25.101 General.
14:1.0.1.3.12.2.75.9SECTION 25.103
   25.103 Stall speed.
14:1.0.1.3.12.2.75.10SECTION 25.105
   25.105 Takeoff.
14:1.0.1.3.12.2.75.11SECTION 25.107
   25.107 Takeoff speeds.
14:1.0.1.3.12.2.75.12SECTION 25.109
   25.109 Accelerate-stop distance.
14:1.0.1.3.12.2.75.13SECTION 25.111
   25.111 Takeoff path.
14:1.0.1.3.12.2.75.14SECTION 25.113
   25.113 Takeoff distance and takeoff run.
14:1.0.1.3.12.2.75.15SECTION 25.115
   25.115 Takeoff flight path.
14:1.0.1.3.12.2.75.16SECTION 25.117
   25.117 Climb: general.
14:1.0.1.3.12.2.75.17SECTION 25.119
   25.119 Landing climb: All-engines-operating.
14:1.0.1.3.12.2.75.18SECTION 25.121
   25.121 Climb: One-engine-inoperative.
14:1.0.1.3.12.2.75.19SECTION 25.123
   25.123 En route flight paths.
14:1.0.1.3.12.2.75.20SECTION 25.125
   25.125 Landing.
14:1.0.1.3.12.2.76SUBJGRP 76
   Controllability and Maneuverability
14:1.0.1.3.12.2.76.21SECTION 25.143
   25.143 General.
14:1.0.1.3.12.2.76.22SECTION 25.145
   25.145 Longitudinal control.
14:1.0.1.3.12.2.76.23SECTION 25.147
   25.147 Directional and lateral control.
14:1.0.1.3.12.2.76.24SECTION 25.149
   25.149 Minimum control speed.
14:1.0.1.3.12.2.77SUBJGRP 77
   Trim
14:1.0.1.3.12.2.77.25SECTION 25.161
   25.161 Trim.
14:1.0.1.3.12.2.78SUBJGRP 78
   Stability
14:1.0.1.3.12.2.78.26SECTION 25.171
   25.171 General.
14:1.0.1.3.12.2.78.27SECTION 25.173
   25.173 Static longitudinal stability.
14:1.0.1.3.12.2.78.28SECTION 25.175
   25.175 Demonstration of static longitudinal stability.
14:1.0.1.3.12.2.78.29SECTION 25.177
   25.177 Static lateral-directional stability.
14:1.0.1.3.12.2.78.30SECTION 25.181
   25.181 Dynamic stability.
14:1.0.1.3.12.2.79SUBJGRP 79
   Stalls
14:1.0.1.3.12.2.79.31SECTION 25.201
   25.201 Stall demonstration.
14:1.0.1.3.12.2.79.32SECTION 25.203
   25.203 Stall characteristics.
14:1.0.1.3.12.2.79.33SECTION 25.207
   25.207 Stall warning.
14:1.0.1.3.12.2.80SUBJGRP 80
   Ground and Water Handling Characteristics
14:1.0.1.3.12.2.80.34SECTION 25.231
   25.231 Longitudinal stability and control.
14:1.0.1.3.12.2.80.35SECTION 25.233
   25.233 Directional stability and control.
14:1.0.1.3.12.2.80.36SECTION 25.235
   25.235 Taxiing condition.
14:1.0.1.3.12.2.80.37SECTION 25.237
   25.237 Wind velocities.
14:1.0.1.3.12.2.80.38SECTION 25.239
   25.239 Spray characteristics, control, and stability on water.
14:1.0.1.3.12.2.81SUBJGRP 81
   Miscellaneous Flight Requirements
14:1.0.1.3.12.2.81.39SECTION 25.251
   25.251 Vibration and buffeting.
14:1.0.1.3.12.2.81.40SECTION 25.253
   25.253 High-speed characteristics.
14:1.0.1.3.12.2.81.41SECTION 25.255
   25.255 Out-of-trim characteristics.
14:1.0.1.3.12.3SUBPART C
Subpart C - Structure
14:1.0.1.3.12.3.82SUBJGRP 82
   General
14:1.0.1.3.12.3.82.1SECTION 25.301
   25.301 Loads.
14:1.0.1.3.12.3.82.2SECTION 25.303
   25.303 Factor of safety.
14:1.0.1.3.12.3.82.3SECTION 25.305
   25.305 Strength and deformation.
14:1.0.1.3.12.3.82.4SECTION 25.307
   25.307 Proof of structure.
14:1.0.1.3.12.3.83SUBJGRP 83
   Flight Loads
14:1.0.1.3.12.3.83.5SECTION 25.321
   25.321 General.
14:1.0.1.3.12.3.84SUBJGRP 84
   Flight Maneuver and Gust Conditions
14:1.0.1.3.12.3.84.6SECTION 25.331
   25.331 Symmetric maneuvering conditions.
14:1.0.1.3.12.3.84.7SECTION 25.333
   25.333 Flight maneuvering envelope.
14:1.0.1.3.12.3.84.8SECTION 25.335
   25.335 Design airspeeds.
14:1.0.1.3.12.3.84.9SECTION 25.337
   25.337 Limit maneuvering load factors.
14:1.0.1.3.12.3.84.10SECTION 25.341
   25.341 Gust and turbulence loads.
14:1.0.1.3.12.3.84.11SECTION 25.343
   25.343 Design fuel and oil loads.
14:1.0.1.3.12.3.84.12SECTION 25.345
   25.345 High lift devices.
14:1.0.1.3.12.3.84.13SECTION 25.349
   25.349 Rolling conditions.
14:1.0.1.3.12.3.84.14SECTION 25.351
   25.351 Yaw maneuver conditions.
14:1.0.1.3.12.3.85SUBJGRP 85
   Supplementary Conditions
14:1.0.1.3.12.3.85.15SECTION 25.361
   25.361 Engine and auxiliary power unit torque.
14:1.0.1.3.12.3.85.16SECTION 25.362
   25.362 Engine failure loads.
14:1.0.1.3.12.3.85.17SECTION 25.363
   25.363 Side load on engine and auxiliary power unit mounts.
14:1.0.1.3.12.3.85.18SECTION 25.365
   25.365 Pressurized compartment loads.
14:1.0.1.3.12.3.85.19SECTION 25.367
   25.367 Unsymmetrical loads due to engine failure.
14:1.0.1.3.12.3.85.20SECTION 25.371
   25.371 Gyroscopic loads.
14:1.0.1.3.12.3.85.21SECTION 25.373
   25.373 Speed control devices.
14:1.0.1.3.12.3.86SUBJGRP 86
   Control Surface and System Loads
14:1.0.1.3.12.3.86.22SECTION 25.391
   25.391 Control surface loads: General.
14:1.0.1.3.12.3.86.23SECTION 25.393
   25.393 Loads parallel to hinge line.
14:1.0.1.3.12.3.86.24SECTION 25.395
   25.395 Control system.
14:1.0.1.3.12.3.86.25SECTION 25.397
   25.397 Control system loads.
14:1.0.1.3.12.3.86.26SECTION 25.399
   25.399 Dual control system.
14:1.0.1.3.12.3.86.27SECTION 25.405
   25.405 Secondary control system.
14:1.0.1.3.12.3.86.28SECTION 25.407
   25.407 Trim tab effects.
14:1.0.1.3.12.3.86.29SECTION 25.409
   25.409 Tabs.
14:1.0.1.3.12.3.86.30SECTION 25.415
   25.415 Ground gust conditions.
14:1.0.1.3.12.3.86.31SECTION 25.427
   25.427 Unsymmetrical loads.
14:1.0.1.3.12.3.86.32SECTION 25.445
   25.445 Auxiliary aerodynamic surfaces.
14:1.0.1.3.12.3.86.33SECTION 25.457
   25.457 Wing flaps.
14:1.0.1.3.12.3.86.34SECTION 25.459
   25.459 Special devices.
14:1.0.1.3.12.3.87SUBJGRP 87
   Ground Loads
14:1.0.1.3.12.3.87.35SECTION 25.471
   25.471 General.
14:1.0.1.3.12.3.87.36SECTION 25.473
   25.473 Landing load conditions and assumptions.
14:1.0.1.3.12.3.87.37SECTION 25.477
   25.477 Landing gear arrangement.
14:1.0.1.3.12.3.87.38SECTION 25.479
   25.479 Level landing conditions.
14:1.0.1.3.12.3.87.39SECTION 25.481
   25.481 Tail-down landing conditions.
14:1.0.1.3.12.3.87.40SECTION 25.483
   25.483 One-gear landing conditions.
14:1.0.1.3.12.3.87.41SECTION 25.485
   25.485 Side load conditions.
14:1.0.1.3.12.3.87.42SECTION 25.487
   25.487 Rebound landing condition.
14:1.0.1.3.12.3.87.43SECTION 25.489
   25.489 Ground handling conditions.
14:1.0.1.3.12.3.87.44SECTION 25.491
   25.491 Taxi, takeoff and landing roll.
14:1.0.1.3.12.3.87.45SECTION 25.493
   25.493 Braked roll conditions.
14:1.0.1.3.12.3.87.46SECTION 25.495
   25.495 Turning.
14:1.0.1.3.12.3.87.47SECTION 25.497
   25.497 Tail-wheel yawing.
14:1.0.1.3.12.3.87.48SECTION 25.499
   25.499 Nose-wheel yaw and steering.
14:1.0.1.3.12.3.87.49SECTION 25.503
   25.503 Pivoting.
14:1.0.1.3.12.3.87.50SECTION 25.507
   25.507 Reversed braking.
14:1.0.1.3.12.3.87.51SECTION 25.509
   25.509 Towing loads.
14:1.0.1.3.12.3.87.52SECTION 25.511
   25.511 Ground load: unsymmetrical loads on multiple-wheel units.
14:1.0.1.3.12.3.87.53SECTION 25.519
   25.519 Jacking and tie-down provisions.
14:1.0.1.3.12.3.88SUBJGRP 88
   Water Loads
14:1.0.1.3.12.3.88.54SECTION 25.521
   25.521 General.
14:1.0.1.3.12.3.88.55SECTION 25.523
   25.523 Design weights and center of gravity positions.
14:1.0.1.3.12.3.88.56SECTION 25.525
   25.525 Application of loads.
14:1.0.1.3.12.3.88.57SECTION 25.527
   25.527 Hull and main float load factors.
14:1.0.1.3.12.3.88.58SECTION 25.529
   25.529 Hull and main float landing conditions.
14:1.0.1.3.12.3.88.59SECTION 25.531
   25.531 Hull and main float takeoff condition.
14:1.0.1.3.12.3.88.60SECTION 25.533
   25.533 Hull and main float bottom pressures.
14:1.0.1.3.12.3.88.61SECTION 25.535
   25.535 Auxiliary float loads.
14:1.0.1.3.12.3.88.62SECTION 25.537
   25.537 Seawing loads.
14:1.0.1.3.12.3.89SUBJGRP 89
   Emergency Landing Conditions
14:1.0.1.3.12.3.89.63SECTION 25.561
   25.561 General.
14:1.0.1.3.12.3.89.64SECTION 25.562
   25.562 Emergency landing dynamic conditions.
14:1.0.1.3.12.3.89.65SECTION 25.563
   25.563 Structural ditching provisions.
14:1.0.1.3.12.3.90SUBJGRP 90
   Fatigue Evaluation
14:1.0.1.3.12.3.90.66SECTION 25.571
   25.571 Damage - tolerance and fatigue evaluation of structure.
14:1.0.1.3.12.3.91SUBJGRP 91
   Lightning Protection
14:1.0.1.3.12.3.91.67SECTION 25.581
   25.581 Lightning protection.
14:1.0.1.3.12.4SUBPART D
Subpart D - Design and Construction
14:1.0.1.3.12.4.92SUBJGRP 92
   General
14:1.0.1.3.12.4.92.1SECTION 25.601
   25.601 General.
14:1.0.1.3.12.4.92.2SECTION 25.603
   25.603 Materials.
14:1.0.1.3.12.4.92.3SECTION 25.605
   25.605 Fabrication methods.
14:1.0.1.3.12.4.92.4SECTION 25.607
   25.607 Fasteners.
14:1.0.1.3.12.4.92.5SECTION 25.609
   25.609 Protection of structure.
14:1.0.1.3.12.4.92.6SECTION 25.611
   25.611 Accessibility provisions.
14:1.0.1.3.12.4.92.7SECTION 25.613
   25.613 Material strength properties and material design values.
14:1.0.1.3.12.4.92.8SECTION 25.619
   25.619 Special factors.
14:1.0.1.3.12.4.92.9SECTION 25.621
   25.621 Casting factors.
14:1.0.1.3.12.4.92.10SECTION 25.623
   25.623 Bearing factors.
14:1.0.1.3.12.4.92.11SECTION 25.625
   25.625 Fitting factors.
14:1.0.1.3.12.4.92.12SECTION 25.629
   25.629 Aeroelastic stability requirements.
14:1.0.1.3.12.4.92.13SECTION 25.631
   25.631 Bird strike damage.
14:1.0.1.3.12.4.93SUBJGRP 93
   Control Surfaces
14:1.0.1.3.12.4.93.14SECTION 25.651
   25.651 Proof of strength.
14:1.0.1.3.12.4.93.15SECTION 25.655
   25.655 Installation.
14:1.0.1.3.12.4.93.16SECTION 25.657
   25.657 Hinges.
14:1.0.1.3.12.4.94SUBJGRP 94
   Control Systems
14:1.0.1.3.12.4.94.17SECTION 25.671
   25.671 General.
14:1.0.1.3.12.4.94.18SECTION 25.672
   25.672 Stability augmentation and automatic and power-operated systems.
14:1.0.1.3.12.4.94.19SECTION 25.675
   25.675 Stops.
14:1.0.1.3.12.4.94.20SECTION 25.677
   25.677 Trim systems.
14:1.0.1.3.12.4.94.21SECTION 25.679
   25.679 Control system gust locks.
14:1.0.1.3.12.4.94.22SECTION 25.681
   25.681 Limit load static tests.
14:1.0.1.3.12.4.94.23SECTION 25.683
   25.683 Operation tests.
14:1.0.1.3.12.4.94.24SECTION 25.685
   25.685 Control system details.
14:1.0.1.3.12.4.94.25SECTION 25.689
   25.689 Cable systems.
14:1.0.1.3.12.4.94.26SECTION 25.693
   25.693 Joints.
14:1.0.1.3.12.4.94.27SECTION 25.697
   25.697 Lift and drag devices, controls.
14:1.0.1.3.12.4.94.28SECTION 25.699
   25.699 Lift and drag device indicator.
14:1.0.1.3.12.4.94.29SECTION 25.701
   25.701 Flap and slat interconnection.
14:1.0.1.3.12.4.94.30SECTION 25.703
   25.703 Takeoff warning system.
14:1.0.1.3.12.4.95SUBJGRP 95
   Landing Gear
14:1.0.1.3.12.4.95.31SECTION 25.721
   25.721 General.
14:1.0.1.3.12.4.95.32SECTION 25.723
   25.723 Shock absorption tests.
14:1.0.1.3.12.4.95.33SECTION 25.725-25.727
   25.725-25.727 [Reserved]
14:1.0.1.3.12.4.95.34SECTION 25.729
   25.729 Retracting mechanism.
14:1.0.1.3.12.4.95.35SECTION 25.731
   25.731 Wheels.
14:1.0.1.3.12.4.95.36SECTION 25.733
   25.733 Tires.
14:1.0.1.3.12.4.95.37SECTION 25.735
   25.735 Brakes and braking systems.
14:1.0.1.3.12.4.95.38SECTION 25.737
   25.737 Skis.
14:1.0.1.3.12.4.96SUBJGRP 96
   Floats and Hulls
14:1.0.1.3.12.4.96.39SECTION 25.751
   25.751 Main float buoyancy.
14:1.0.1.3.12.4.96.40SECTION 25.753
   25.753 Main float design.
14:1.0.1.3.12.4.96.41SECTION 25.755
   25.755 Hulls.
14:1.0.1.3.12.4.97SUBJGRP 97
   Personnel and Cargo Accommodations
14:1.0.1.3.12.4.97.42SECTION 25.771
   25.771 Pilot compartment.
14:1.0.1.3.12.4.97.43SECTION 25.772
   25.772 Pilot compartment doors.
14:1.0.1.3.12.4.97.44SECTION 25.773
   25.773 Pilot compartment view.
14:1.0.1.3.12.4.97.45SECTION 25.775
   25.775 Windshields and windows.
14:1.0.1.3.12.4.97.46SECTION 25.777
   25.777 Cockpit controls.
14:1.0.1.3.12.4.97.47SECTION 25.779
   25.779 Motion and effect of cockpit controls.
14:1.0.1.3.12.4.97.48SECTION 25.781
   25.781 Cockpit control knob shape.
14:1.0.1.3.12.4.97.49SECTION 25.783
   25.783 Fuselage doors.
14:1.0.1.3.12.4.97.50SECTION 25.785
   25.785 Seats, berths, safety belts, and harnesses.
14:1.0.1.3.12.4.97.51SECTION 25.787
   25.787 Stowage compartments.
14:1.0.1.3.12.4.97.52SECTION 25.789
   25.789 Retention of items of mass in passenger and crew compartments and galleys.
14:1.0.1.3.12.4.97.53SECTION 25.791
   25.791 Passenger information signs and placards.
14:1.0.1.3.12.4.97.54SECTION 25.793
   25.793 Floor surfaces.
14:1.0.1.3.12.4.97.55SECTION 25.795
   25.795 Security considerations.
14:1.0.1.3.12.4.98SUBJGRP 98
   Emergency Provisions
14:1.0.1.3.12.4.98.56SECTION 25.801
   25.801 Ditching.
14:1.0.1.3.12.4.98.57SECTION 25.803
   25.803 Emergency evacuation.
14:1.0.1.3.12.4.98.58SECTION 25.807
   25.807 Emergency exits.
14:1.0.1.3.12.4.98.59SECTION 25.809
   25.809 Emergency exit arrangement.
14:1.0.1.3.12.4.98.60SECTION 25.810
   25.810 Emergency egress assist means and escape routes.
14:1.0.1.3.12.4.98.61SECTION 25.811
   25.811 Emergency exit marking.
14:1.0.1.3.12.4.98.62SECTION 25.812
   25.812 Emergency lighting.
14:1.0.1.3.12.4.98.63SECTION 25.813
   25.813 Emergency exit access.
14:1.0.1.3.12.4.98.64SECTION 25.815
   25.815 Width of aisle.
14:1.0.1.3.12.4.98.65SECTION 25.817
   25.817 Maximum number of seats abreast.
14:1.0.1.3.12.4.98.66SECTION 25.819
   25.819 Lower deck service compartments (including galleys).
14:1.0.1.3.12.4.98.67SECTION 25.820
   25.820 Lavatory doors.
14:1.0.1.3.12.4.99SUBJGRP 99
   Ventilation and Heating
14:1.0.1.3.12.4.99.68SECTION 25.831
   25.831 Ventilation.
14:1.0.1.3.12.4.99.69SECTION 25.832
   25.832 Cabin ozone concentration.
14:1.0.1.3.12.4.99.70SECTION 25.833
   25.833 Combustion heating systems.
14:1.0.1.3.12.4.100SUBJGRP 100
   Pressurization
14:1.0.1.3.12.4.100.71SECTION 25.841
   25.841 Pressurized cabins.
14:1.0.1.3.12.4.100.72SECTION 25.843
   25.843 Tests for pressurized cabins.
14:1.0.1.3.12.4.101SUBJGRP 101
   Fire Protection
14:1.0.1.3.12.4.101.73SECTION 25.851
   25.851 Fire extinguishers.
14:1.0.1.3.12.4.101.74SECTION 25.853
   25.853 Compartment interiors.
14:1.0.1.3.12.4.101.75SECTION 25.854
   25.854 Lavatory fire protection.
14:1.0.1.3.12.4.101.76SECTION 25.855
   25.855 Cargo or baggage compartments.
14:1.0.1.3.12.4.101.77SECTION 25.856
   25.856 Thermal/Acoustic insulation materials.
14:1.0.1.3.12.4.101.78SECTION 25.857
   25.857 Cargo compartment classification.
14:1.0.1.3.12.4.101.79SECTION 25.858
   25.858 Cargo or baggage compartment smoke or fire detection systems.
14:1.0.1.3.12.4.101.80SECTION 25.859
   25.859 Combustion heater fire protection.
14:1.0.1.3.12.4.101.81SECTION 25.863
   25.863 Flammable fluid fire protection.
14:1.0.1.3.12.4.101.82SECTION 25.865
   25.865 Fire protection of flight controls, engine mounts, and other flight structure.
14:1.0.1.3.12.4.101.83SECTION 25.867
   25.867 Fire protection: other components.
14:1.0.1.3.12.4.101.84SECTION 25.869
   25.869 Fire protection: systems.
14:1.0.1.3.12.4.102SUBJGRP 102
   Miscellaneous
14:1.0.1.3.12.4.102.85SECTION 25.871
   25.871 Leveling means.
14:1.0.1.3.12.4.102.86SECTION 25.875
   25.875 Reinforcement near propellers.
14:1.0.1.3.12.4.102.87SECTION 25.899
   25.899 Electrical bonding and protection against static electricity.
14:1.0.1.3.12.5SUBPART E
Subpart E - Powerplant
14:1.0.1.3.12.5.103SUBJGRP 103
   General
14:1.0.1.3.12.5.103.1SECTION 25.901
   25.901 Installation.
14:1.0.1.3.12.5.103.2SECTION 25.903
   25.903 Engines.
14:1.0.1.3.12.5.103.3SECTION 25.904
   25.904 Automatic takeoff thrust control system (ATTCS).
14:1.0.1.3.12.5.103.4SECTION 25.905
   25.905 Propellers.
14:1.0.1.3.12.5.103.5SECTION 25.907
   25.907 Propeller vibration and fatigue.
14:1.0.1.3.12.5.103.6SECTION 25.925
   25.925 Propeller clearance.
14:1.0.1.3.12.5.103.7SECTION 25.929
   25.929 Propeller deicing.
14:1.0.1.3.12.5.103.8SECTION 25.933
   25.933 Reversing systems.
14:1.0.1.3.12.5.103.9SECTION 25.934
   25.934 Turbojet engine thrust reverser system tests.
14:1.0.1.3.12.5.103.10SECTION 25.937
   25.937 Turbopropeller-drag limiting systems.
14:1.0.1.3.12.5.103.11SECTION 25.939
   25.939 Turbine engine operating characteristics.
14:1.0.1.3.12.5.103.12SECTION 25.941
   25.941 Inlet, engine, and exhaust compatibility.
14:1.0.1.3.12.5.103.13SECTION 25.943
   25.943 Negative acceleration.
14:1.0.1.3.12.5.103.14SECTION 25.945
   25.945 Thrust or power augmentation system.
14:1.0.1.3.12.5.104SUBJGRP 104
   Fuel System
14:1.0.1.3.12.5.104.15SECTION 25.951
   25.951 General.
14:1.0.1.3.12.5.104.16SECTION 25.952
   25.952 Fuel system analysis and test.
14:1.0.1.3.12.5.104.17SECTION 25.953
   25.953 Fuel system independence.
14:1.0.1.3.12.5.104.18SECTION 25.954
   25.954 Fuel system lightning protection.
14:1.0.1.3.12.5.104.19SECTION 25.955
   25.955 Fuel flow.
14:1.0.1.3.12.5.104.20SECTION 25.957
   25.957 Flow between interconnected tanks.
14:1.0.1.3.12.5.104.21SECTION 25.959
   25.959 Unusable fuel supply.
14:1.0.1.3.12.5.104.22SECTION 25.961
   25.961 Fuel system hot weather operation.
14:1.0.1.3.12.5.104.23SECTION 25.963
   25.963 Fuel tanks: general.
14:1.0.1.3.12.5.104.24SECTION 25.965
   25.965 Fuel tank tests.
14:1.0.1.3.12.5.104.25SECTION 25.967
   25.967 Fuel tank installations.
14:1.0.1.3.12.5.104.26SECTION 25.969
   25.969 Fuel tank expansion space.
14:1.0.1.3.12.5.104.27SECTION 25.971
   25.971 Fuel tank sump.
14:1.0.1.3.12.5.104.28SECTION 25.973
   25.973 Fuel tank filler connection.
14:1.0.1.3.12.5.104.29SECTION 25.975
   25.975 Fuel tank vents and carburetor vapor vents.
14:1.0.1.3.12.5.104.30SECTION 25.977
   25.977 Fuel tank outlet.
14:1.0.1.3.12.5.104.31SECTION 25.979
   25.979 Pressure fueling system.
14:1.0.1.3.12.5.104.32SECTION 25.981
   25.981 Fuel tank explosion prevention.
14:1.0.1.3.12.5.105SUBJGRP 105
   Fuel System Components
14:1.0.1.3.12.5.105.33SECTION 25.991
   25.991 Fuel pumps.
14:1.0.1.3.12.5.105.34SECTION 25.993
   25.993 Fuel system lines and fittings.
14:1.0.1.3.12.5.105.35SECTION 25.994
   25.994 Fuel system components.
14:1.0.1.3.12.5.105.36SECTION 25.995
   25.995 Fuel valves.
14:1.0.1.3.12.5.105.37SECTION 25.997
   25.997 Fuel strainer or filter.
14:1.0.1.3.12.5.105.38SECTION 25.999
   25.999 Fuel system drains.
14:1.0.1.3.12.5.105.39SECTION 25.1001
   25.1001 Fuel jettisoning system.
14:1.0.1.3.12.5.106SUBJGRP 106
   Oil System
14:1.0.1.3.12.5.106.40SECTION 25.1011
   25.1011 General.
14:1.0.1.3.12.5.106.41SECTION 25.1013
   25.1013 Oil tanks.
14:1.0.1.3.12.5.106.42SECTION 25.1015
   25.1015 Oil tank tests.
14:1.0.1.3.12.5.106.43SECTION 25.1017
   25.1017 Oil lines and fittings.
14:1.0.1.3.12.5.106.44SECTION 25.1019
   25.1019 Oil strainer or filter.
14:1.0.1.3.12.5.106.45SECTION 25.1021
   25.1021 Oil system drains.
14:1.0.1.3.12.5.106.46SECTION 25.1023
   25.1023 Oil radiators.
14:1.0.1.3.12.5.106.47SECTION 25.1025
   25.1025 Oil valves.
14:1.0.1.3.12.5.106.48SECTION 25.1027
   25.1027 Propeller feathering system.
14:1.0.1.3.12.5.107SUBJGRP 107
   Cooling
14:1.0.1.3.12.5.107.49SECTION 25.1041
   25.1041 General.
14:1.0.1.3.12.5.107.50SECTION 25.1043
   25.1043 Cooling tests.
14:1.0.1.3.12.5.107.51SECTION 25.1045
   25.1045 Cooling test procedures.
14:1.0.1.3.12.5.108SUBJGRP 108
   Induction System
14:1.0.1.3.12.5.108.52SECTION 25.1091
   25.1091 Air induction.
14:1.0.1.3.12.5.108.53SECTION 25.1093
   25.1093 Induction system icing protection.
14:1.0.1.3.12.5.108.54SECTION 25.1101
   25.1101 Carburetor air preheater design.
14:1.0.1.3.12.5.108.55SECTION 25.1103
   25.1103 Induction system ducts and air duct systems.
14:1.0.1.3.12.5.108.56SECTION 25.1105
   25.1105 Induction system screens.
14:1.0.1.3.12.5.108.57SECTION 25.1107
   25.1107 Inter-coolers and after-coolers.
14:1.0.1.3.12.5.109SUBJGRP 109
   Exhaust System
14:1.0.1.3.12.5.109.58SECTION 25.1121
   25.1121 General.
14:1.0.1.3.12.5.109.59SECTION 25.1123
   25.1123 Exhaust piping.
14:1.0.1.3.12.5.109.60SECTION 25.1125
   25.1125 Exhaust heat exchangers.
14:1.0.1.3.12.5.109.61SECTION 25.1127
   25.1127 Exhaust driven turbo-superchargers.
14:1.0.1.3.12.5.110SUBJGRP 110
   Powerplant Controls and Accessories
14:1.0.1.3.12.5.110.62SECTION 25.1141
   25.1141 Powerplant controls: general.
14:1.0.1.3.12.5.110.63SECTION 25.1142
   25.1142 Auxiliary power unit controls.
14:1.0.1.3.12.5.110.64SECTION 25.1143
   25.1143 Engine controls.
14:1.0.1.3.12.5.110.65SECTION 25.1145
   25.1145 Ignition switches.
14:1.0.1.3.12.5.110.66SECTION 25.1147
   25.1147 Mixture controls.
14:1.0.1.3.12.5.110.67SECTION 25.1149
   25.1149 Propeller speed and pitch controls.
14:1.0.1.3.12.5.110.68SECTION 25.1153
   25.1153 Propeller feathering controls.
14:1.0.1.3.12.5.110.69SECTION 25.1155
   25.1155 Reverse thrust and propeller pitch settings below the flight regime.
14:1.0.1.3.12.5.110.70SECTION 25.1157
   25.1157 Carburetor air temperature controls.
14:1.0.1.3.12.5.110.71SECTION 25.1159
   25.1159 Supercharger controls.
14:1.0.1.3.12.5.110.72SECTION 25.1161
   25.1161 Fuel jettisoning system controls.
14:1.0.1.3.12.5.110.73SECTION 25.1163
   25.1163 Powerplant accessories.
14:1.0.1.3.12.5.110.74SECTION 25.1165
   25.1165 Engine ignition systems.
14:1.0.1.3.12.5.110.75SECTION 25.1167
   25.1167 Accessory gearboxes.
14:1.0.1.3.12.5.111SUBJGRP 111
   Powerplant Fire Protection
14:1.0.1.3.12.5.111.76SECTION 25.1181
   25.1181 Designated fire zones; regions included.
14:1.0.1.3.12.5.111.77SECTION 25.1182
   25.1182 Nacelle areas behind firewalls, and engine pod attaching structures containing flammable fluid lines.
14:1.0.1.3.12.5.111.78SECTION 25.1183
   25.1183 Flammable fluid-carrying components.
14:1.0.1.3.12.5.111.79SECTION 25.1185
   25.1185 Flammable fluids.
14:1.0.1.3.12.5.111.80SECTION 25.1187
   25.1187 Drainage and ventilation of fire zones.
14:1.0.1.3.12.5.111.81SECTION 25.1189
   25.1189 Shutoff means.
14:1.0.1.3.12.5.111.82SECTION 25.1191
   25.1191 Firewalls.
14:1.0.1.3.12.5.111.83SECTION 25.1192
   25.1192 Engine accessory section diaphragm.
14:1.0.1.3.12.5.111.84SECTION 25.1193
   25.1193 Cowling and nacelle skin.
14:1.0.1.3.12.5.111.85SECTION 25.1195
   25.1195 Fire extinguishing systems.
14:1.0.1.3.12.5.111.86SECTION 25.1197
   25.1197 Fire extinguishing agents.
14:1.0.1.3.12.5.111.87SECTION 25.1199
   25.1199 Extinguishing agent containers.
14:1.0.1.3.12.5.111.88SECTION 25.1201
   25.1201 Fire extinguishing system materials.
14:1.0.1.3.12.5.111.89SECTION 25.1203
   25.1203 Fire detector system.
14:1.0.1.3.12.5.111.90SECTION 25.1207
   25.1207 Compliance.
14:1.0.1.3.12.6SUBPART F
Subpart F - Equipment
14:1.0.1.3.12.6.112SUBJGRP 112
   General
14:1.0.1.3.12.6.112.1SECTION 25.1301
   25.1301 Function and installation.
14:1.0.1.3.12.6.112.2SECTION 25.1302
   25.1302 Installed systems and equipment for use by the flightcrew.
14:1.0.1.3.12.6.112.3SECTION 25.1303
   25.1303 Flight and navigation instruments.
14:1.0.1.3.12.6.112.4SECTION 25.1305
   25.1305 Powerplant instruments.
14:1.0.1.3.12.6.112.5SECTION 25.1307
   25.1307 Miscellaneous equipment.
14:1.0.1.3.12.6.112.6SECTION 25.1309
   25.1309 Equipment, systems, and installations.
14:1.0.1.3.12.6.112.7SECTION 25.1310
   25.1310 Power source capacity and distribution.
14:1.0.1.3.12.6.112.8SECTION 25.1316
   25.1316 Electrical and electronic system lightning protection.
14:1.0.1.3.12.6.112.9SECTION 25.1317
   25.1317 High-intensity Radiated Fields (HIRF) Protection.
14:1.0.1.3.12.6.113SUBJGRP 113
   Instruments: Installation
14:1.0.1.3.12.6.113.10SECTION 25.1321
   25.1321 Arrangement and visibility.
14:1.0.1.3.12.6.113.11SECTION 25.1322
   25.1322 Flightcrew alerting.
14:1.0.1.3.12.6.113.12SECTION 25.1323
   25.1323 Airspeed indicating system.
14:1.0.1.3.12.6.113.13SECTION 25.1324
   25.1324 Angle of attack system.
14:1.0.1.3.12.6.113.14SECTION 25.1325
   25.1325 Static pressure systems.
14:1.0.1.3.12.6.113.15SECTION 25.1326
   25.1326 Pitot heat indication systems.
14:1.0.1.3.12.6.113.16SECTION 25.1327
   25.1327 Magnetic direction indicator.
14:1.0.1.3.12.6.113.17SECTION 25.1329
   25.1329 Flight guidance system.
14:1.0.1.3.12.6.113.18SECTION 25.1331
   25.1331 Instruments using a power supply.
14:1.0.1.3.12.6.113.19SECTION 25.1333
   25.1333 Instrument systems.
14:1.0.1.3.12.6.113.20SECTION 25.1337
   25.1337 Powerplant instruments.
14:1.0.1.3.12.6.114SUBJGRP 114
   Electrical Systems and Equipment
14:1.0.1.3.12.6.114.21SECTION 25.1351
   25.1351 General.
14:1.0.1.3.12.6.114.22SECTION 25.1353
   25.1353 Electrical equipment and installations.
14:1.0.1.3.12.6.114.23SECTION 25.1355
   25.1355 Distribution system.
14:1.0.1.3.12.6.114.24SECTION 25.1357
   25.1357 Circuit protective devices.
14:1.0.1.3.12.6.114.25SECTION 25.1360
   25.1360 Precautions against injury.
14:1.0.1.3.12.6.114.26SECTION 25.1362
   25.1362 Electrical supplies for emergency conditions.
14:1.0.1.3.12.6.114.27SECTION 25.1363
   25.1363 Electrical system tests.
14:1.0.1.3.12.6.114.28SECTION 25.1365
   25.1365 Electrical appliances, motors, and transformers.
14:1.0.1.3.12.6.115SUBJGRP 115
   Lights
14:1.0.1.3.12.6.115.29SECTION 25.1381
   25.1381 Instrument lights.
14:1.0.1.3.12.6.115.30SECTION 25.1383
   25.1383 Landing lights.
14:1.0.1.3.12.6.115.31SECTION 25.1385
   25.1385 Position light system installation.
14:1.0.1.3.12.6.115.32SECTION 25.1387
   25.1387 Position light system dihedral angles.
14:1.0.1.3.12.6.115.33SECTION 25.1389
   25.1389 Position light distribution and intensities.
14:1.0.1.3.12.6.115.34SECTION 25.1391
   25.1391 Minimum intensities in the horizontal plane of forward and rear position lights.
14:1.0.1.3.12.6.115.35SECTION 25.1393
   25.1393 Minimum intensities in any vertical plane of forward and rear position lights.
14:1.0.1.3.12.6.115.36SECTION 25.1395
   25.1395 Maximum intensities in overlapping beams of forward and rear position lights.
14:1.0.1.3.12.6.115.37SECTION 25.1397
   25.1397 Color specifications.
14:1.0.1.3.12.6.115.38SECTION 25.1399
   25.1399 Riding light.
14:1.0.1.3.12.6.115.39SECTION 25.1401
   25.1401 Anticollision light system.
14:1.0.1.3.12.6.115.40SECTION 25.1403
   25.1403 Wing icing detection lights.
14:1.0.1.3.12.6.116SUBJGRP 116
   Safety Equipment
14:1.0.1.3.12.6.116.41SECTION 25.1411
   25.1411 General.
14:1.0.1.3.12.6.116.42SECTION 25.1415
   25.1415 Ditching equipment.
14:1.0.1.3.12.6.116.43SECTION 25.1419
   25.1419 Ice protection.
14:1.0.1.3.12.6.116.44SECTION 25.1420
   25.1420 Supercooled large drop icing conditions.
14:1.0.1.3.12.6.116.45SECTION 25.1421
   25.1421 Megaphones.
14:1.0.1.3.12.6.116.46SECTION 25.1423
   25.1423 Public address system.
14:1.0.1.3.12.6.117SUBJGRP 117
   Miscellaneous Equipment
14:1.0.1.3.12.6.117.47SECTION 25.1431
   25.1431 Electronic equipment.
14:1.0.1.3.12.6.117.48SECTION 25.1433
   25.1433 Vacuum systems.
14:1.0.1.3.12.6.117.49SECTION 25.1435
   25.1435 Hydraulic systems.
14:1.0.1.3.12.6.117.50SECTION 25.1438
   25.1438 Pressurization and pneumatic systems.
14:1.0.1.3.12.6.117.51SECTION 25.1439
   25.1439 Protective breathing equipment.
14:1.0.1.3.12.6.117.52SECTION 25.1441
   25.1441 Oxygen equipment and supply.
14:1.0.1.3.12.6.117.53SECTION 25.1443
   25.1443 Minimum mass flow of supplemental oxygen.
14:1.0.1.3.12.6.117.54SECTION 25.1445
   25.1445 Equipment standards for the oxygen distributing system.
14:1.0.1.3.12.6.117.55SECTION 25.1447
   25.1447 Equipment standards for oxygen dispensing units.
14:1.0.1.3.12.6.117.56SECTION 25.1449
   25.1449 Means for determining use of oxygen.
14:1.0.1.3.12.6.117.57SECTION 25.1450
   25.1450 Chemical oxygen generators.
14:1.0.1.3.12.6.117.58SECTION 25.1453
   25.1453 Protection of oxygen equipment from rupture.
14:1.0.1.3.12.6.117.59SECTION 25.1455
   25.1455 Draining of fluids subject to freezing.
14:1.0.1.3.12.6.117.60SECTION 25.1457
   25.1457 Cockpit voice recorders.
14:1.0.1.3.12.6.117.61SECTION 25.1459
   25.1459 Flight data recorders.
14:1.0.1.3.12.6.117.62SECTION 25.1461
   25.1461 Equipment containing high energy rotors.
14:1.0.1.3.12.7SUBPART G
Subpart G - Operating Limitations and Information
14:1.0.1.3.12.7.118SUBJGRP 118
   Operating Limitations
14:1.0.1.3.12.7.118.1SECTION 25.1501
   25.1501 General.
14:1.0.1.3.12.7.118.2SECTION 25.1503
   25.1503 Airspeed limitations: general.
14:1.0.1.3.12.7.118.3SECTION 25.1505
   25.1505 Maximum operating limit speed.
14:1.0.1.3.12.7.118.4SECTION 25.1507
   25.1507 Maneuvering speed.
14:1.0.1.3.12.7.118.5SECTION 25.1511
   25.1511 Flap extended speed.
14:1.0.1.3.12.7.118.6SECTION 25.1513
   25.1513 Minimum control speed.
14:1.0.1.3.12.7.118.7SECTION 25.1515
   25.1515 Landing gear speeds.
14:1.0.1.3.12.7.118.8SECTION 25.1516
   25.1516 Other speed limitations.
14:1.0.1.3.12.7.118.9SECTION 25.1517
   25.1517 Rough air speed, VRA.
14:1.0.1.3.12.7.118.10SECTION 25.1519
   25.1519 Weight, center of gravity, and weight distribution.
14:1.0.1.3.12.7.118.11SECTION 25.1521
   25.1521 Powerplant limitations.
14:1.0.1.3.12.7.118.12SECTION 25.1522
   25.1522 Auxiliary power unit limitations.
14:1.0.1.3.12.7.118.13SECTION 25.1523
   25.1523 Minimum flight crew.
14:1.0.1.3.12.7.118.14SECTION 25.1525
   25.1525 Kinds of operation.
14:1.0.1.3.12.7.118.15SECTION 25.1527
   25.1527 Ambient air temperature and operating altitude.
14:1.0.1.3.12.7.118.16SECTION 25.1529
   25.1529 Instructions for Continued Airworthiness.
14:1.0.1.3.12.7.118.17SECTION 25.1531
   25.1531 Maneuvering flight load factors.
14:1.0.1.3.12.7.118.18SECTION 25.1533
   25.1533 Additional operating limitations.
14:1.0.1.3.12.7.118.19SECTION 25.1535
   25.1535 ETOPS approval.
14:1.0.1.3.12.7.119SUBJGRP 119
   Markings and Placards
14:1.0.1.3.12.7.119.20SECTION 25.1541
   25.1541 General.
14:1.0.1.3.12.7.119.21SECTION 25.1543
   25.1543 Instrument markings: general.
14:1.0.1.3.12.7.119.22SECTION 25.1545
   25.1545 Airspeed limitation information.
14:1.0.1.3.12.7.119.23SECTION 25.1547
   25.1547 Magnetic direction indicator.
14:1.0.1.3.12.7.119.24SECTION 25.1549
   25.1549 Powerplant and auxiliary power unit instruments.
14:1.0.1.3.12.7.119.25SECTION 25.1551
   25.1551 Oil quantity indication.
14:1.0.1.3.12.7.119.26SECTION 25.1553
   25.1553 Fuel quantity indicator.
14:1.0.1.3.12.7.119.27SECTION 25.1555
   25.1555 Control markings.
14:1.0.1.3.12.7.119.28SECTION 25.1557
   25.1557 Miscellaneous markings and placards.
14:1.0.1.3.12.7.119.29SECTION 25.1561
   25.1561 Safety equipment.
14:1.0.1.3.12.7.119.30SECTION 25.1563
   25.1563 Airspeed placard.
14:1.0.1.3.12.7.120SUBJGRP 120
   Airplane Flight Manual
14:1.0.1.3.12.7.120.31SECTION 25.1581
   25.1581 General.
14:1.0.1.3.12.7.120.32SECTION 25.1583
   25.1583 Operating limitations.
14:1.0.1.3.12.7.120.33SECTION 25.1585
   25.1585 Operating procedures.
14:1.0.1.3.12.7.120.34SECTION 25.1587
   25.1587 Performance information.
14:1.0.1.3.12.8SUBPART H
Subpart H - Electrical Wiring Interconnection Systems (EWIS)
14:1.0.1.3.12.8.121.1SECTION 25.1701
   25.1701 Definition.
14:1.0.1.3.12.8.121.2SECTION 25.1703
   25.1703 Function and installation: EWIS.
14:1.0.1.3.12.8.121.3SECTION 25.1705
   25.1705 Systems and functions: EWIS.
14:1.0.1.3.12.8.121.4SECTION 25.1707
   25.1707 System separation: EWIS.
14:1.0.1.3.12.8.121.5SECTION 25.1709
   25.1709 System safety: EWIS.
14:1.0.1.3.12.8.121.6SECTION 25.1711
   25.1711 Component identification: EWIS.
14:1.0.1.3.12.8.121.7SECTION 25.1713
   25.1713 Fire protection: EWIS.
14:1.0.1.3.12.8.121.8SECTION 25.1715
   25.1715 Electrical bonding and protection against static electricity: EWIS.
14:1.0.1.3.12.8.121.9SECTION 25.1717
   25.1717 Circuit protective devices: EWIS.
14:1.0.1.3.12.8.121.10SECTION 25.1719
   25.1719 Accessibility provisions: EWIS.
14:1.0.1.3.12.8.121.11SECTION 25.1721
   25.1721 Protection of EWIS.
14:1.0.1.3.12.8.121.12SECTION 25.1723
   25.1723 Flammable fluid fire protection: EWIS.
14:1.0.1.3.12.8.121.13SECTION 25.1725
   25.1725 Powerplants: EWIS.
14:1.0.1.3.12.8.121.14SECTION 25.1727
   25.1727 Flammable fluid shutoff means: EWIS.
14:1.0.1.3.12.8.121.15SECTION 25.1729
   25.1729 Instructions for Continued Airworthiness: EWIS.
14:1.0.1.3.12.8.121.16SECTION 25.1731
   25.1731 Powerplant and APU fire detector system: EWIS.
14:1.0.1.3.12.8.121.17SECTION 25.1733
   25.1733 Fire detector systems, general: EWIS.
14:1.0.1.3.12.9SUBPART I
Subpart I - Special Federal Aviation Regulations
14:1.0.1.3.12.9.121.1SECTION 25.1801
   25.1801 SFAR No. 111 - Lavatory Oxygen Systems.
14:1.0.1.3.12.10SUBPART 0
14:1.0.1.3.12.11SUBPART 0
14:1.0.1.3.12.11.121.1.7APPENDIX Appendix A
   Appendix A to Part 25
14:1.0.1.3.12.11.121.1.8APPENDIX Appendix B
   Appendix B to Part 25
14:1.0.1.3.12.11.121.1.9APPENDIX Appendix C
   Appendix C to Part 25
14:1.0.1.3.12.11.121.1.10APPENDIX Appendix D
   Appendix D to Part 25
14:1.0.1.3.12.11.121.1.11APPENDIX Appendix E
   Appendix E to Part 25
14:1.0.1.3.12.11.121.1.12APPENDIX Appendix F
   Appendix F to Part 25
14:1.0.1.3.12.12.121.1.13APPENDIX Appendix H
   Appendix H to Part 25 - Instructions for Continued Airworthiness
14:1.0.1.3.12.12.121.1.14APPENDIX Appendix I
   Appendix I to Part 25 - Installation of an Automatic Takeoff Thrust Control System (ATTCS)
14:1.0.1.3.12.12.121.1.15APPENDIX Appendix J
   Appendix J to Part 25 - Emergency Evacuation
14:1.0.1.3.12.12.121.1.16APPENDIX Appendix K
   Appendix K to Part 25 - Extended Operations (ETOPS)
14:1.0.1.3.12.12.121.1.17APPENDIX Appendix L
   Appendix L to Part 25 - HIRF Environments and Equipment HIRF Test Levels
14:1.0.1.3.12.12.121.1.18APPENDIX Appendix M
   Appendix M to Part 25 - Fuel Tank System Flammability Reduction Means
14:1.0.1.3.12.12.121.1.19APPENDIX Appendix N
   Appendix N to Part 25 - Fuel Tank Flammability Exposure and Reliability Analysis
14:1.0.1.3.12.12.121.1.20APPENDIX Appendix O
   Appendix O to Part 25 - Supercooled Large Drop Icing Conditions