Pt. 121, App. M 14 CFR Ch. I (1-1-19 Edition) 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. Parameters Range Accuracy (sensor input) Seconds per sampling interval 16. Lateral control surface(s) position. 7 18 Full Range ......... Section2Section unless higher accuracy uniquely required. 0.5 or 0.25 for airplanes operated under Section 121.344(f). 0.3% of full range. 17. Yaw control surface(s) position. 8 18 Full Range ......... Section2Section unless higher accuracy uniquely required. 0.5 ..................... 0.2% of full range. 18. Lateral Acceleration. Section1g .................... 0.25 ................... 0.004g 19. Pitch Trim Surface Position. Full Range ......... 1 ........................ 0.6% of full range. 20. Trailing Edge Flap or Cockpit Control Selection. 10. Full Range or Each Position (discrete). Section1.5% max. range excluding datum error of Section5%. Section3Section Unless Higher Accuracy Uniquely Required. Section3Section or as Pilot-s indicator. 2 ........................ 0.5% of full range. 21. Leading Edge Flap or Cockpit Control Selection. 11. Full Range or Each Discrete Position. 2 ........................ 0.5% of full range. 22. Each Thrust Reverser Position (or equivalent for propeller airplane). 23. Ground spoiler position or brake selection 12. 24. Outside Air Temperature or Total Air Temperature. 13. 25. Autopilot/ Autothrottle/ AFCS Mode and Engagement Status. 26. Radio Altitude 14. Stowed, In Transit, and Reverse (Discrete). Section3Section or as Pilot-s indicator and sufficient to determine each discrete position. ........................... 1 (per engine) ... ........................... Section2Section Unless higher accuracy uniquely required. Section2 SectionC ................. 1 or 0.5 for airplanes operated under Section 121.344(f). 2 ........................ 0.5% of full range. 0.3 SectionC ................ A suitable combination of discretes. ........................... 1 ........................ ........................... Section20 ft to 2,500 ft. Section2 ft or Section3% whichever is greater below 500 ft and Section5% above 500 ft. 1 ........................ 1 ft + 5% above 500 ft. Full range or each position (discrete). Section50 SectionC to + 90 SectionC. Resolution Remarks A suitable combination of surface position sensors is acceptable in lieu of recording each surface separately. The control surfaces may be sampled alternately to produce the sampling interval of 0.5 or 0.25, as applicable. For airplanes with multiple or split surfaces, a suitable combination of surface position sensors is acceptable in lieu of recording each surface separately. The control surfaces may be sampled alternately to produce the sampling interval of 0.5. Flap position and cockpit control may each be sampled at 4 second intervals, to give a data point every 2 seconds. Left and right sides, or flap position and cockpit control may each be sampled at 4 second intervals, so as to give a data point every 2 seconds. Turbo-jet - 2 discretes enable the 3 states to be determined. Turbo-prop - discrete. Discretes should show which systems are engaged and which primary modes are controlling the flight path and speed of the aircraft. For autoland/category 3 operations. Each radio altimeter should be recorded, but arranged so that at least one is recorded each second. 300 VerDate Sep<11>2014 08:20 May 17, 2019 Jkt 247048 PO 00000 Frm 00310 Fmt 8010 Sfmt 8002 Y:\SGML\247048.XXX 247048