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 2023
(a)The operational performance requirements for flight data recorders (FDRs) should be those laid down in EUROCAE Document 112A (Minimum Operational Performance Specification for Crash Protected Airborne Recorder Systems) dated September 2013, or any later equivalent standard produced by EUROCAE.
(b)The FDR should, with reference to a timescale, record:
(1)the list of parameters in Table 1 below;
(2)the additional parameters listed in Table 2 below, when the information data source for the parameter is used by helicopter systems or is available on the instrument panel for use by the flight crew to operate the helicopter; and
(3)any dedicated parameters related to novel or unique design or operational characteristics of the helicopter as determined by the Agency.
(c)The parameters to be recorded should meet the performance specifications (range, sampling intervals, accuracy limits and resolution in read-out) as defined in the relevant tables of EUROCAE Document 112A, or any later equivalent standard produced by EUROCAE.
Table 1: FDR — 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 numbers depicted in EUROCAE Document 112A.
Table 2: Helicopters for which the data source for the parameter is either used by the 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 (showing which systems are engaged and which primary modes are controlling the flight path) |
| 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)/interstage turbine temperature (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 | Selected Mach (all pilot selectable modes of operation) — to be recorded for the helicopters where the parameter is displayed electronically. |
| 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
46a
46b | EFIS display format (showing the display system status):
Pilot
First officer |
| 47 | Multi-function/engine/alerts display format (showing the display system status) |
| 48 | Event marker |
| 49
49a
49b
49c | Status of ground proximity warning system (GPWS)/terrain awareness warning system (TAWS)/ground collision avoidance system (GCAS):
Selection of terrain display mode including pop-up display status — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification.
Terrain alerts, both cautions and warnings, and advisories — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification
On/off switch position — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification |
| 50
50a
50b
50c
50d
50e | Traffic alert and collision avoidance system (TCAS)/airborne collision avoidance system (ACAS):
Combined control — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification.
Vertical control — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification.
Up advisory — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification.
Down advisory — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification.
Sensitivity level — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification. |
| 51
51a
51b
51c
51d | Primary flight controls — pilot input forces:
Collective pitch — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification
Longitudinal cyclic pitch — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification.
Lateral cyclic pitch — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification.
Tail rotor pedal — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification. |
| 52 | Computed centre of gravity — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification. |
| 53 | Helicopter computed weight — for helicopters type certified before 1 January 2023, to be recorded only if this does not require extensive modification. |
* The number in the left-hand column reflects the serial numbers depicted in EUROCAE Document 112A.