MEL and CDL Flashcards
(20 cards)
Item 05-00-01 refers to
Non-Safety Related Equipment
Item 25-20-01 refers to
Passenger Convenience
All unserviceable equipment must be clearly labelled as ….
“INOP”
“Dispatch” or “Commencement of Flight” is …
… the point at which the aircraft moves under its own power
Rectification Interval (RI)
Define Cat A
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
Rectification Interval (RI)
Define Cat B
Cat B = 3 days (excluding day of discovery)
Rectification Interval (RI)
Define Cat C
Cat C = 10 days (excluding day of discovery)
Rectification Interval (RI)
Define Cat D
Cat D = 120 days (excluding day of discovery)
Main Maintenance Bases for the 777
LHR and LGW
Once an aircraft has dispatched from a Main Maintenance Base then the restrictions to dispatch from such a base…..
no longer apply
After dispatch from a Main Maintenance Base on the first flight of the day it becomes a
Transit Station for the rest of the day (GMT)
The ACF procedure can be used if (3 points):
Defect complies with the MEL
No maintenance is required (or affects non-safety related equipment)
There are no spares/personnel readily available
ACF not to be used (2 points):
From Main Maintenance Base when a restriction “No dispatch main maintenance base” exists
For CDL items
SEA may be applied where:
MEL Maintenance Procedure is required prior to dispatch, and,
No BA Authorised Engineer is available
What is an Engineering Design Instruction (EDI)/ Engineering Design Approval (EDA)
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
Repair Interval Extension (RIE)
Only to be used for items with RI of…
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
CDL Weight Reductions
Where a performance penalty is listed as negligible no more than XXX items may be missing without penalty
3 items
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
46kgs
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 …
at other speeds
CDL
En-route Fuel Mileage Effects
0.25% per 454kg penalty