The maintenance organisation 'appeared' to not fully understand the 'hard life' requirement of the seat pyrotechnic cartridges. It seems (according to the AAIB report) they (the approved maintenance organisation) sought clarification as to whether they could remain fitted/in service from the regulator.A8-20 is detailed regarding maintenance of AAES.
The maintenance for Ex Mil,PFA aircraft which exceed 2730Kg MTWA, must be conducted by organisations approved under BCAR's Ch. A8-20.
The maintenance, modification and operating records + the maintenance schedule are made available to the regulator ; If approved, the CAA would have issued the initial permit.
Last edited by woptb; 21st Dec 2015 at 23:16.