but the pilot normally hasn'tvto use that
Au contaire, the pilot must ensure that it isnt limiting, if it is limiting then he has to adjust the fuel dump quantity.
If you look at the B777 QRH it states:
In the event an overweight landing is required and the fuel dump system is unavailable, landing climb limit weights should be checked if a Flaps 30 landing is planned.....At weights exceeding Flaps 30, a Flaps 20 landing should be performed.
So the concern is getting the aircraft on the ground, the only consideration given to the required maintenance actions is the instruction to land with approx 6-fps rather than 12-fps.
If we look at the B744, Fuel Jettison is shown in the DITCHING checklist, I doubt that has anything to do with maintenance checks
In the MD11, its shown in the DRIFTDOWN checklist, but this aircraft is interesting as the FCOM also states:
Maximum takeoff weight may be limited by:- Second Segment Limiting Weight
- Weight Limited By Fuel Dumping
- Maximum Tire Speed Limiting Weight
- Weight Limited by Obstacles......
Hang on, did that really say that takeoff weight is limited by Weight Limited by Fuel Dumping?? Why? And this is where the whole thing comes back to FAR 25.1001.......
NOTHING TO DO WITH AFTER LANDING MAINTENANCE CHECKS!
Mutt