A&C said:
"Once you start operating the aircraft occasionally without the temp cycles of high level flight and store the aircraft in a comfortable environment the safe life of such devices is likely to extend, it is for those who extend the life of these devices to base this decision on reliable data.
It is vital that the black and white attitude to shelf life is not taken and the date on the packet is viewed in the light of current operational conditions as this can move the date in ether direction to ensure reliable performance."
Wow! I think I'd dislike working under that ethos. For an operator to consider the Life Expiry Date as a mere guide to be varied on the heat of the building invites all sorts of rogue practices. Are you sure that's what you meant?