14 C.F.R. Appendix B to Part 135—Airplane Flight Recorder Specifications
Title 14 - Aeronautics and Space
[Doc. No. 25530, 53 FR 26152, July 11, 1988; 53 FR 30906, Aug. 16, 1988, as amended by Amdt. 135–69, 62 FR 38397, July 17, 1997]
Title 14: Aeronautics and Space
PART 135—OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT
Subpart K—Hazardous Materials Training Program
Appendix B to Part 135—Airplane Flight Recorder Specifications
---------------------------------------------------------------------------------------------------------------- Installed system \1\ minimum Sampling interval Resolution \4\ Parameters Range accuracy (to (per second) read out recovered data)----------------------------------------------------------------------------------------------------------------Relative time (from recorded on 25 hr minimum..... ±0.125% per 1................. 1 sec. prior to takeoff). hour.Indicated airspeed.............. Vso to VD (KIAS).. ±5% or 1................. 1% \3\. ±10 kts., whichever is greater. Resolution 2 kts. below 175 KIAS.Altitude........................ -1,000 ft. to max ±100 to 1................. 25 to 150 cert. alt. of A/C. ±700 ft. (see Table 1, TSO C51-a).Magnetic heading................ 360°.......... ±5°.... 1................. 1°Vertical acceleration........... -3g to +6g........ ±0.2g in 4 (or 1 per second 0.03g. addition to where peaks, ref. ±0.3g to 1g are maximum datum. recorded).Longitudinal acceleration....... ±1.0g...... ±1.5% max. 2................. 0.01g. range excluding datum error of ±5%.Pitch attitude.................. 100% of usable.... ±2°.... 1................. 0.8°Roll attitude................... ±60° or ±2°.... 1................. 0.8° 100% of usable range, whichever is greater.Stabilizer trim position........ Full range........ ±3% unless 1................. 1% \3\. higher uniquely required. OrPitch control position.......... Full range........ ±3% unless 1................. 1% \3\. higher uniquely required. Engine Power, Each EngineFan or N1 speed or EPR or Maximum range..... ±5%........ 1................. 1% \3\. cockpit indications used for aircraft certification. OrProp. speed and torque (sample .................. .................. 1 (prop speed), 1 once/sec as close together as (torque). practicable).Altitude rate \2\ (need depends ±8,000 fpm. ±10%. 1................. 250 fpm Below on altitude resolution). Resolution 250 12,000 fpm below 12,000 ft. indicated.Angle of attack \2\ (need -20° to ±2°.... 1................. 0.8% \3\ depends on altitude resolution). 40° or of usable range.Radio transmitter keying On/off............ .................. 1................. (discrete).TE flaps (discrete or analog)... Each discrete .................. 1................. position (U, D, T/ O, AAP). Or............. Analog 0-100% ±3°.... 1................. 1% \3\ range.LE flaps (discrete or analog)... Each discrete .................. 1................. position (U, D, T/ O, AAP). Or............. Analog 0-100% ±3°.... 1................. 1% \3\. range.Thrust reverser, each engine Stowed or full .................. 1................. (Discrete). reverse.Spoiler/speedbrake (discrete)... Stowed or out..... .................. 1.................Autopilot engaged (discrete).... Engaged or .................. 1................. disengaged.----------------------------------------------------------------------------------------------------------------\1\ When data sources are aircraft instruments (except altimeters) of acceptable quality to fly the aircraft the recording system excluding these sensors (but including all other characteristics of the recording system) shall contribute no more than half of the values in this column.\2\ If data from the altitude encoding altimeter (100 ft. resolution) is used, then either one of these parameters should also be recorded. If however, altitude is recorded at a minimum resolution of 25 feet, then these two parameters can be omitted.\3\ Per cent of full range.\4\ This column applies to aircraft manufacturing after October 11, 1991.