trashie
It came out in the Coronial on the so called Kingair "Ghost Flight" from Perth to Qld that there was no Maintenance call up for inspection of the O2 system or testing of the baro's that control the Cabin Alt warning light or mask drop down from the date of manufacture of the aircraft. There is now, at least in Oz?? Neither if I recall correctly was there a requirement for a routine maintenance check of the condition of the masks. As some of these aircraft are rising 30years old the condition of the hoses, connectors and masks are not unlike that of the regimental condom after a Saturday night leave pass.
At least some of the ones I've seen over the years.