Federal Aviation Administration, DOT Pt. 125, App. E Resolution 4 read out Parameters Range Accuracy sensor input to DFDR readout Sampling interval (per second) GPWS (ground proximity warning system). Landing gear or gear selector position. DME 1 and 2 Distance ............. Nav 1 and 2 Frequency Selection. Discrete ........................ ................................................ 1 ........................ Discrete ........................ ................................................ 0-200 NM; ................... Full range ..................... As installed ............................. As installed ............................. 0.25 (1 per 4 seconds). 0.25 ................... 0.25 ................... 1 mi. 1 When altitude rate is recorded. Altitude rate must have sufficient resolution and sampling to permit the derivation of altitude to 5 feet. 2 Percent of full range. 3 For airplanes that can demonstrate the capability of deriving either the control input on control movement (one from the other) for all modes of operation and flight regimes, the - or - applies. For airplanes with non-mechanical control systems (fly-bywire) the - and - applies. In airplanes with split surfaces, suitable combination of inputs is acceptable in lieu of recording each surface separately. 4 This column applies to aircraft manufactured after October 11, 1991. [Doc. No. 25530, 53 FR 26150, July 11, 1988; 53 FR 30906, Aug. 16, 1988] APPENDIX E TO PART 125 - AIRPLANE FLIGHT RECORDER SPECIFICATIONS The recorded values must meet the designated range, resolution and accuracy requirements during static and dynamic conditions. Dynamic condition means the parameter is experiencing change at the maximum rate attainable, including the maximum rate of reversal. All data recorded must be correlated in time to within one second. Accuracy (sensor input) Seconds per sampling interval Resolution Remarks 24 Hrs, 0 to 4095. Section0.125% Per Hour. 4 ........................ 1 sec ................. Section1000 ft to max certificated altitude of aircraft. + 5000 ft. 50 KIAS or minimum value to Max Vso, to 1.2 V.D. 0-360Section and Discrete - true - or - mag - . Section100 to Section700 ft (see table, TSO C124a or TSO C51a). Section5% and Section3% .... 1 ........................ 5- to 35- ............. UTC time preferred when available. Count increments each 4 seconds of system operation. Data should be obtained from the air data computer when practicable. 1 ........................ 1 kt .................... Data should be obtained from the air data computer when practicable. Section2Section ..................... 1 ........................ 0.5Section .................... When true or magnetic heading can be selected as the primary heading reference, a discrete indicating selection must be recorded. 5. Normal Acceleration (Vertical) 9. Section3g to + 6g ...... 0.125 ................. 0.004g. 6. Pitch Attitude .. Section75Section ................... Section1% of max range excluding datum error of Section5%. Section2Section ..................... 0.5Section .................... A sampling rate of 0.25 is recommended. 7. Roll Attitude 2 .. Section180Section ................. Section2Section ..................... 0.5Section .................... A sampling rate of 0.5 is recommended. 8. Manual Radio Transmitter Keying or CVR/ DFDR synchronization reference ............. On-Off (Discrete) None. ........................... 1 or 0.25 for airplanes operated under Section 125.226(f). 1 or 0.5 for airplanes operated under Section 121.344(f). 1 ........................ ........................... 9. Thrust/Power on each engine - primary flight crew reference. Full Range Forward. Section2% ................... 1 (per engine) ... 0.3% of full range. Preferably each crew member but one discrete acceptable for all transmission provided the CVR/ FDR system complies with TSO C124a CVR synchronization requirements (paragraph 4.2.1 ED-55). Sufficient parameters (e.g., EPR, N1 or Torque, NP) as appropriate to the particular engine being recorded to determine power in forward and reverse thrust, including potential overspeed condition. 10. Autopilot Engagement. Discrete - on - or - off - . ........................... 1. Parameters Range 1. Time or Relative Times Counts. 1. 2. Pressure Altitude. 3. Indicated airspeed or Calibrated airspeed. 4, Heading (Primary flight crew reference). 371 VerDate Sep<11>2014 08:20 May 17, 2019 Jkt 247048 PO 00000 Frm 00381 Fmt 8010 Sfmt 8002 Y:\SGML\247048.XXX 247048