Federal Aviation Administration, DOT Pt. 135, App. C Installed system 1 minimum accuracy (to recovered data) Sampling interval (per second) Section2Section ......................................... 1 ........................ 0.8Section Section3% unless higher uniquely required. 1 ........................ 1% 3. Full range ....................... Section3% unless higher uniquely required. 1 ........................ 1% 3. Maximum range .............. Section5% ....................................... 1 ........................ 1% 3. ......................................... ................................................ 1 (prop speed), 1 (torque). Section8,000 fpm ..................... Section10%. Resolution 250 fpm below 12,000 ft. indicated. Section2Section ......................................... 1 ........................ Parameters Range Roll attitude ............................ Stabilizer trim position ............ Section60Section or 100% of usable range, whichever is greater. Full range ....................... Or Pitch control position .............. Resolution 4 read out Engine Power, Each Engine Fan or N1 speed or EPR or cockpit indications used for aircraft certification. Or Prop. speed and torque (sample once/sec as close together as practicable). Altitude rate 2 (need depends on altitude resolution). Angle of attack 2 (need depends on altitude resolution). Radio transmitter keying (discrete). TE flaps (discrete or analog) .. LE flaps (discrete or analog) .. Thrust reverser, each engine (Discrete). Spoiler/speedbrake (discrete) Autopilot engaged (discrete) .. Section20Section to 40Section or of usable range. 1 ........................ 250 fpm Below 12,000 0.8% 3 On/off .............................. ................................................ 1. Each discrete position (U, D, T/O, AAP). Or. Analog 0-100% range .... Each discrete position (U, D, T/O, AAP). Or. Analog 0-100% range .... Stowed or full reverse .... ................................................ 1. Section3Section ......................................... ................................................ 1 ........................ 1. 1% 3 Section3Section ......................................... ................................................ 1 ........................ 1. 1% 3. ................................................ ................................................ 1. 1. Stowed or out ................. Engaged or 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. [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] APPENDIX C TO PART 135 - HELICOPTER FLIGHT RECORDER SPECIFICATIONS Parameters Range Installed system 1 minimum accuracy (to recovered data) Sampling interval (per second) Relative time (from recorded on prior to takeoff). Indicated airspeed .................. 25 hr minimum ............... Section0.125% per hour ................. 1 ........................ 1 sec. Section5% or Section10 kts., whichever is greater. 1 ........................ 1 kt. Section100 to Section700 ft. (see Table 1, TSO C51-a). Section5Section ......................................... Section0.2g in addition to Section0.3g maximum datum. 1 ........................ 25 to 150 ft. Magnetic heading ................... Vertical acceleration ............... Vm in to VD (KIAS) (minimum airspeed signal attainable with installed pilot-static system). Section1,000 ft. to 20,000 ft. pressure altitude. 360Section ................................ Section3g to + 6g ................... 1Section. 0.05g. Longitudinal acceleration ........ Section1.0g ............................... Pitch attitude ........................... Roll attitude ............................ 100% of usable range .... Section60Section or 100% of usable range, whichever is greater. Section1.5% max. range excluding datum error of Section5%. Section2Section ......................................... Section2Section ......................................... 1 ........................ 4 (or 1 per second where peaks, ref. to 1g are recorded). 2 ........................ 1 ........................ 1 ........................ 0.8Section. 0.8Section. Altitude .................................... Resolution 3 read out 0.03g. 525 VerDate Sep<11>2014 08:20 May 17, 2019 Jkt 247048 PO 00000 Frm 00535 Fmt 8010 Sfmt 8002 Y:\SGML\247048.XXX 247048