A&C.. Reading the special report by the AAIB. The CAA requirements are stated in the report. The maintenance provider used a completely different approach to the life requirements outside the guidelines specified by the CAA, that really WAS a requirement for the continued validity of the PtF and may prove to be in a court of law. The operating organisation should also have been aware of the issues, they have the technical records for continued airworthiness. Of course none of this remotely caused the accident to happen, however what legal implications arise because of this, only time will tell.
One shot hard life calendar items like a seat cartridge. OEM has tested the hell out of them and came up with 6 years on a shelf (storage conditions) or 2 years in a seat in a cockpit (installed). Chief Engineer who is not legally a specialist on the equipment then gives them a 6 year installed life, way passed their total life expiry time?? I just am thinking... WTF?