AMC1 NCC.IDE.H.165 Flight data recorder    

CAA ORS9 Decision No. 1

OPERATIONAL PERFORMANCE REQUIREMENTS FOR HELICOPTERS HAVING AN MCTOM OF MORE THAN 3 175 KG AND FIRST ISSUED WITH AN INDIVIDUAL CofA ON OR AFTER 1 JANUARY 2016 AND BEFORE 1 JANUARY 2023

(a) The operational performance requirements for flight data recorders (FDRs) should be those laid down in EUROCAE Document ED-112 (Minimum Operational Performance Specification for Crash Protected Airborne Recorder Systems) dated March 2003, including amendments n°1 and n°2, or any later equivalent standard produced by EUROCAE.

(b) The FDR should record, with reference to a timescale, the list of parameters in Table 1 and Table 2, as applicable.

(c) The parameters recorded by the FDR should meet, as far as practicable, the performance specifications (designated ranges, sampling intervals, accuracy limits and minimum resolution in read-out) defined in EUROCAE ED-112, including amendments n°1 and n°2, or any later equivalent standard produced by EUROCAE.

(d) FDR systems for which some recorded parameters do not meet the performance specifications of EUROCAE Document ED-112 may be acceptable to the CAA.

 

Table 1: FDR parameters — All helicopters

No*

Parameter

1

Time or relative time count

2

Pressure altitude

3

Indicated airspeed or calibrated airspeed

4

Heading

5

Normal acceleration

6

Pitch attitude

7

Roll attitude

8

Manual radio transmission keying CVR/FDR synchronisation reference

9

9a

9b

9c

9d

9e 

Power on each engine:

Free power turbine speed (NF)

Engine torque

Engine gas generator speed (NG)

Flight crew compartment power control position

Other parameters to enable engine power to be determined

10

10a

10b 

Rotor:

Main rotor speed

Rotor brake (if installed)

11

 

 

11a

11b

11c

11d

11e

11f

Primary flight controls — pilot input or control output position if it is possible to derive either the control input or the control movement (one from the other) for all modes of operation and flight regimes. Otherwise, pilot input and control output position

 

Collective pitch

Longitudinal cyclic pitch

Lateral cyclic pitch

Tail rotor pedal

Controllable stabilator (if applicable)

Hydraulic selection 

12

Hydraulics low pressure (each system should be recorded)

13

Outside air temperature

18

Yaw rate or yaw acceleration

20

Longitudinal acceleration (body axis)

21

Lateral acceleration

25

Marker beacon passage

26

Warnings — including master warning, gearbox low oil pressure and stability augmentation system failure, and other ‘red’ warnings where the warning condition cannot be determined from other parameters or from the cockpit voice recorder

27

Each navigation receiver frequency selection

37

Engine control modes

*    The number in the left hand column reflects the serial number depicted in EUROCAE ED-112.

 

Table 2: FDR parameters — Helicopters for which the data source for the parameter is either used by helicopter systems or is available on the instrument panel for use by the flight crew to operate the helicopter

No*

Parameter

14

AFCS mode and engagement status

15

Stability augmentation system engagement (each system should be recorded)

16

Main gear box oil pressure

17

17a

17b

17c

Gear box oil temperature:

Main gear box oil temperature

Intermediate gear box oil temperature

Tail rotor gear box oil temperature

19

Indicated sling load force (if signals readily available)

22

Radio altitude

23

23a

23b

23c

Vertical deviation — the approach aid in use should be recorded:

ILS glide path

MLS elevation

GNSS approach path

24

24a

24b

24c

Horizontal deviation — the approach aid in use should be recorded:

ILS localiser

MLS azimuth

GNSS approach path

28

DME 1 & 2 distances

29

29a

29b

29c

29d

29e

29f

Navigation data:

Drift angle

Wind speed

Wind direction

Latitude

Longitude

Ground speed

30

Landing gear or gear selector position

31

Engine exhaust gas temperature (T4)

32

Turbine inlet temperature (TIT/ITT)

33

Fuel contents

34

Altitude rate (vertical speed) - only necessary when available from cockpit instruments

35

Ice detection

36

36a

36b

36c 36d

36e

Helicopter health and usage monitor system (HUMS):

Engine data

Chip detector

Track timing

Exceedance discretes

Broadband average engine vibration

38

 

38a 38b

Selected barometric setting — to be recorded for helicopters where the parameter is displayed electronically:

 

Pilot

Co-pilot

39

Selected altitude (all pilot selectable modes of operation) — to be recorded for the helicopters where the parameter is displayed electronically

40

Selected speed (all pilot selectable modes of operation) — to be recorded for the helicopters where the parameter is displayed electronically

41

Not used (selected Mach)

42

Selected vertical speed (all pilot selectable modes of operation) — to be recorded for the helicopters where the parameter is displayed electronically

43

Selected heading (all pilot selectable modes of operation) — to be recorded for the helicopters where the parameter is displayed electronically

44

Selected flight path (all pilot selectable modes of operation) — to be recorded for the helicopters where the parameter is displayed electronically

45

Selected decision height (all pilot selectable modes of operation) — to be recorded for the helicopters where the parameter is displayed electronically

46

EFIS display format

47

Multi-function/engine/alerts display format

48

Event marker

*    The number in the left hand column reflects the serial number depicted in EUROCAE ED-112.