14 CFR Part 135, Appendix B to Part 135 - Airplane Flight Recorder Specifications

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There are 6 Updates appearing in the Federal Register for 14 CFR 135. View below or at eCFR (GPOAccess)
View PDF at GPO Pt. 135, App. B
Appendix B to Part 135—Airplane Flight Recorder Specifications
Parameters Range Installed system 1 minimum accuracy (to recovered data) Sampling interval (per second) Resolution 4 read out
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.
Relative time (from recorded on prior to takeoff) 25 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
Magnetic heading 360° ±5° 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 Full range ±3% unless higher uniquely required 1 1% 3.
Or
Pitch control position Full range ±3% unless higher uniquely required 1 1% 3.
Engine Power, Each Engine
Fan or N1 speed or EPR or cockpit indications used for aircraft certification Maximum range ±5% 1 1% 3.
Or
Prop. speed and torque (sample once/sec as close together as practicable) 1 (prop speed), 1 (torque)
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 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) 1
Or
Analog 0-100% range ±3° 1 1% 3
LE flaps (discrete or analog) Each discrete position (U, D, T/O, AAP) 1
Or
Analog 0-100% range ±3° 1 1% 3.
Thrust reverser, each engine (Discrete) Stowed or full reverse 1
Spoiler/speedbrake (discrete) Stowed or out 1
Autopilot engaged (discrete) Engaged or disengaged 1
[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 published on 2014-01-01

The following are only the Rules published in the Federal Register after the published date of Title 14.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-07-28; vol. 79 # 144 - Monday, July 28, 2014
    1. 79 FR 43619 - Departing IFR/VFR When Weather Reporting Is Not Available
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Aviation Administration
      Direct final rule; request for comments.
      Effective April 22, 2015. Submit comments on or before September 26, 2014. If we receive an adverse comment or notice of intent to file an adverse comment, we will advise the public by publishing a document in the Federal Register withdrawing the direct final rule before the effective date of the final rule.
      14 CFR Part 135

Title 14 published on 2014-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 14 CFR 135 after this date.

  • 2014-07-28; vol. 79 # 144 - Monday, July 28, 2014
    1. 79 FR 43619 - Departing IFR/VFR When Weather Reporting Is Not Available
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Aviation Administration
      Direct final rule; request for comments.
      Effective April 22, 2015. Submit comments on or before September 26, 2014. If we receive an adverse comment or notice of intent to file an adverse comment, we will advise the public by publishing a document in the Federal Register withdrawing the direct final rule before the effective date of the final rule.
      14 CFR Part 135