MEL and CDL

Question 1

Item 05-00-01 refers to

Answer 1

Non-Safety Related Equipment

Question 2

Item 25-20-01 refers to

Answer 2

Passenger Convenience

Question 3

All unserviceable equipment must be clearly labelled as ….

Answer 3

“INOP”

Question 4

“Dispatch” or “Commencement of Flight” is …

Answer 4

… the point at which the aircraft moves under its own power

Question 5

Rectification Interval (RI)

Define Cat A

Answer 5

Time is specified in the appropriate MMEL item

o Where specified in days; excludes the day of discovery
o For a time period other than days; starts at time of deferral

Question 6

Rectification Interval (RI)

Define Cat B

Answer 6

Cat B = 3 days (excluding day of discovery)

Question 7

Rectification Interval (RI)

Define Cat C

Answer 7

Cat C = 10 days (excluding day of discovery)

Question 8

Rectification Interval (RI)

Define Cat D

Answer 8

Cat D = 120 days (excluding day of discovery)

Question 9

Main Maintenance Bases for the 777

Answer 9

LHR and LGW

Question 10

Once an aircraft has dispatched from a Main Maintenance Base then the restrictions to dispatch from such a base…..

Answer 10

no longer apply

Question 11

After dispatch from a Main Maintenance Base on the first flight of the day it becomes a

Answer 11

Transit Station for the rest of the day (GMT)

Question 12

The ACF procedure can be used if (3 points):

Answer 12

 Defect complies with the MEL
 No maintenance is required (or affects non-safety related equipment)
 There are no spares/personnel readily available

Question 13

ACF not to be used (2 points):

Answer 13

 From Main Maintenance Base when a restriction “No dispatch main maintenance base” exists
 For CDL items

Question 14

SEA may be applied where:

Answer 14

 MEL Maintenance Procedure is required prior to dispatch, and,
 No BA Authorised Engineer is available

Question 15

What is an Engineering Design Instruction (EDI)/ Engineering Design Approval (EDA)

Answer 15

EASA Part 21 Allows BA to approve deviations from the manufacturers approved documentation

Extra info:

 This authority is conveyed in the EDI/EDA
 EDI = The “How to Do It”
 EDA = Substantiation and Classification
 If it is not possible to grant an EDI/EDA then a Temporary Repair Mandate may be issued

Question 16

Repair Interval Extension (RIE)

Only to be used for items with RI of…

Answer 16

 Items with repair intervals of B or C ONLY (not A or D)

 When events beyond the operators control have precluded rectification

CAA to be provided with details within 10 days

Question 17

CDL Weight Reductions

Where a performance penalty is listed as negligible no more than XXX items may be missing without penalty

Answer 17

3 items

Question 18

CDL Weight Reductions

For each missing item more than 3 “negligible” items reduce the take-off, landing and En-route climb limits by XX kgs

Answer 18

46kgs

Question 19

CDL

En-route Diversion Speed Effects (DDG 3. CDL)

En-route climb penalties are based on the maximum lift/drag ratio speed. Correct the penalties by the listed factor for flight …

Answer 19

at other speeds

Question 20

CDL

En-route Fuel Mileage Effects

Answer 20

0.25% per 454kg penalty