AMC5 CAT.IDE.A.190 Flight data recorder    

CAA ORS9 Decision No. 1

PERFORMANCE SPECIFICATIONS FOR THE PARAMETERS TO BE RECORDED FOR AEROPLANES FIRST ISSUED WITH AN INDIVIDUAL COFA UP TO AND INCLUDING 31 MARCH 1998

Table 1: Flight data recorder

 

No

 

Parameter

 

Range

Sampling interval in seconds

Accuracy limits (sensor input compared to FDR readout)

Recommended resolution in readout

 

Remarks

1

Time or relative time count

24 hours

4

±0.125 % per hour

1 second

Coordinated universal time (UTC)preferred where available, otherwise elapsed time

2

Pressure altitude

-1 000 ft to maximum certificated altitude

of aircraft +5 000 ft

1

±100 ft to ±700 ft

5 ft

For altitude record error see ETSO-C124a

3

Indicated airspeed or calibrated airspeed

50 kt to max VS0 Max VS0 to 1.2 VD

1

±5 %

±3 %

1 kt

VS0 stalling speed or minimum steady flight speed in the landing configuration VD design diving speed

4

Heading

360 degrees

1

±2 degrees

0.5 degrees

 

5

Normal acceleration

-3 g to +6 g

0.125 ±

±1 % of maximum range excluding a datum error of ±5 %

0.004 g

 

6

Pitch attitude

±75 degrees

1

±2 degrees

0.5 degrees

 

7

Roll attitude

±180 degrees

1

±2 degrees

0.5 degrees

 

8

Manual radio transmission keying

Discrete

1

-

-

On-off (one discrete). An FDR/CVR time synchronisation signal complying with 4.2.1 of EUROCAE ED-55 is considered to be an acceptable alternative means of compliance.

9

Power on each engine

Full range

Each engine each second

±2 %

0.2 % of full range

Sufficient parameters e.g. EPR/N, or Torque/NP as appropriate to the particular engine should be recorded to determine power.

10

Trailing edge flap or flight crew compartment control selection

Full range or each discrete position

2

±5 % or as pilot’s indicator

0.5 % of full range

 

11

Leading edge flap or flight crew compartment control selection

Full range or each discrete position

2

-

0.5 % of full range

 

12

Thrust reverser position

Stowed, in transit and reverse

Each reverser each second

±2 % unless higher accuracy uniquely required

-

 

13

Ground spoiler and/or

speed brake selection

Full range or each

discrete position

1

±2 degrees

0.2 % of full

range

 

14

Outside air temperatures or

total air temperature

Sensor range

2

-

0.3ºC

 

15a

 

 

15b

 

 

Autopilot engagement status

Autopilot operating modes, auto-throttle and AFCS systems engagement status and operating modes

 

A suitable combination of discretes

 

1

 

 

-

 

16

Longitudinal acceleration

± 1 g

0.25

±1.5 % of maximum range excluding a datum error of ±5 %

0.004 g

 

17

Lateral acceleration

±1 g

0.25

±1.5 % of maximum range excluding a datum error of ±5 %

0.004 g

 

18

Primary flight controls, control surface positions and/or pilot input (pitch, roll, yaw)

Full range

1

±2 degrees unless higher accuracy uniquely required

0.2 % of full range

For aeroplanes with conventional control systems, ‘or’ applies.

For aeroplanes with non-mechanical control systems, ‘and’ applies.

For aeroplanes with split surfaces, a suitable combination of inputs is acceptable in lieu of recording each surface separately.

19

Pitch trim position

Full range

1

±3 % unless higher accuracy uniquely required

0.3 % of full range

 

20

Radio altitude

-20 ft to +2 500 ft

1

±2 ft or ±3 % whichever is greater below 500 ft and ±5 % above 500 ft

1 ft below

500 ft, 1 ft +5 %

of full range above 500 ft

As installed. Accuracy limits are recommended

21

Glide path deviation

Signal range

1

±3 %

0.3 % of full range

As installed. Accuracy limits are recommended

22

Localiser deviation

Signal range

1

±3 %

0.3 % of full range

As installed. Accuracy limits are recommended.

23

Marker beacon passage

Discrete

1

–

–

A single discrete is acceptable for all markers.

24

Master warning

Discrete

1

–

–

 

25

NAV 1 and 2 frequency selection

Full range

4

As installed

–

 

26

DME 1 and 2 distance

0-200 NM

4

As installed

–

Recording of latitude and longitude from INS or other navigation system is a preferred alternative.

27

Landing gear squat switch status

Discrete

1

–

–

 

28

Ground proximity warning

system (GPWS)

Discrete

1

–

–

 

29

Angle of attack

Full range

0.5

As installed

0.3 % of full range

 

30

Hydraulics

Discrete(s)

2

–

–

 

31

Navigation data

As installed

1

As installed

–

 

32

Landing gear or gear selector position

Discrete

4

As installed

–

 

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