Title 14
PART 91 APPENDIX E
Appendix E to Part 91 - Airplane Flight Recorder Specifications
14:2.0.1.3.12.16.9.1.28 : Appendix E
Appendix E to Part 91 - Airplane Flight Recorder Specifications| Parameters | Range | Installed system 1 minimum accuracy (to recovered data) | Sampling interval (per second) | Resolution 4 read out |
|---|---|---|---|---|
| Relative Time (From Recorded on Prior to Takeoff) | 8 hr minimum | ±0.125% per hour | 1 | 1 sec. |
| Indicated Airspeed | Vso to VD (KIAS) | ±5% or ±10 kts., whichever is greater. Resolution 2 kts. below 175 KIAS | 1 | 1% 3 |
| Altitude | −1,000 ft. to max cert. alt. of A/C | ±100 to ±700 ft. (see Table 1, TSO C51-a) | 1 | 25 to 150 ft. |
| Magnetic Heading | 360° | ±5° | 1 | 1° |
| Vertical Acceleration | −3g to + 6g | ±0.2g in addition to ±0.3g maximum datum | 4 (or 1 per second where peaks, ref. to 1g are recorded) | 0.03g. |
| Longitudinal Acceleration | ±1.0g | ±1.5% max. range excluding datum error of ±5% | 2 | 0.01g. |
| Pitch Attitude | 100% of usable | ±2° | 1 | 0.8° |
| Roll Attitude | ±60° or 100% of usable range, whichever is greater | ±2° | 1 | 0.8° |
| Stabilizer Trim Position, or | Full Range | ±3% unless higher uniquely required | 1 | 1% 3 |
| Pitch Control Position 5 | ||||
| Engine Power, Each Engine: | Full Range | ±3% unless higher uniquely required | 1 | 1% 3 |
| Fan or N 1 Speed or EPR or Cockpit indications Used for Aircraft Certification OR | Maximum Range | ±5% | 1 | 1% 3 |
| Prop. speed and Torque (Sample Once/Sec as Close together as Practicable) | 1 (prop Speed) 1 (torque) |
1% 3 1% 3 |
||
| Altitude Rate 2 (need depends on altitude resolution) | ±8,000 fpm | ±10%. Resolution 250 fpm below 12,000 ft. indicated | 1 | 250 fpm. below 12,000 |
| Angle of Attack 2 (need depends on altitude resolution) | −20° to 40° or 100% of usable range | ±2° | 1 | 0.8% 3 |
| Radio Transmitter Keying (Discrete) | On/Off | 1 | ||
| TE Flaps (Discrete or Analog) | Each discrete position (U, D, T/O, AAP) OR | 1 | ||
| LE Flaps (Discrete or Analog) | Analog 0-100% range | ±3% | 1 | 1% 3 |
| Each discrete position (U, D, T/O, AAP) OR | 1 | |||
| Thrust Reverser, Each Engine (Discrete) | Analog 0-100% range | ±3° | 1 | 1% 3 |
| Stowed or full reverse | ||||
| Spoiler/Speedbrake (Discrete) | Stowed or out | 1 | ||
| Autopilot Engaged (Discrete) | Engaged or Disengaged | 1 |