@ Chuchinchow...looks like the more, the merrier.
As a complete outsider to this "trade", I'd like to place the observation that irrespective of box-ticking, arse-covering jobsworth-ism,
An aeroplane sitting on an overloaded undercarriage, unsafe to take off, is "technically" unfit for it's intended purpose. given the legal framework within which it is supposed to be operated, an attempt to operate it in an overloaded condition (evacuation from Saigon excepted
) is probably illegal also.
The primary reason the aircraft was unfit to fly, is that the undercarriage/engines/wings/airframe safety-margins were deemed inadequate for the safe moving of the load.....doesn't matter a damn HOW it became overloaded, it was legally incapable of safe operation with the original load.
If that's not a technical cause , i'd love to know what IS, in your arcane, parallel universe.