Mr Hotdog, point noted with regards to the fact that a leaking door pressurisation seal or incorrectly installed door sill scuff plate would not cause any significant a/c depressurisation. However, I am eluding to the the point that any a/c component incorrectly installed by an individual inadequately trained or supervised due to the "cost effective" supervisory structure and work practices of a particular maintenance organisation, in conjuction with an over sight in SOP, obviously has the potential for disasterous results...
If you could please refer to jet noseover's post of 22.03.07 titled "QANTAS FLIES WITHOUT EMERGENCY OXYGEN" you may well concur with my statement.
Cheers...