APU incidents

[KERMIT12]

Does anyone know of any incidents where the auxiliary power and air con provided to an aircraft while on the ground has resulted in actual physical damage to the aircraft or its internal systems?

[ernie blackhander]

Only by reading ad's. One was raised because the ct (me stinks) let go and imbedded itself in the a/c and a ground handler

[IFixPlanes]

Originally Posted by EASA AD No.: 2008-0017R1

...
Uncontained APU Generator failures on ground have occurred on Airbus
A330 aircraft in service.
Preliminary investigations confirmed uncontained APU Generator failures
with subsequent aircraft structural damages to the APU compartment and,
in one case, to the stabiliser compartment. ...

EASA Airworthiness Directives 2008-0017R1

[SeldomFixit]

I remember a 707 snakepit being pulled to pieces to retrive the moggy that crawled into the GTSU hose. Check valves a yet to be installed accessory in 138 days. Such a stink but one I have fondly revisited in many Chinese Reataurants over the ensueing years

[Vortechs Jenerator]

There was that famous KC 135 tanker that was blown apart a few years ago after the safety valve gauge spun round a few times unnoticed during a ground pressure test.

I guess you could call that damage by an aircon cart

KC135 Fuselage Pressure Test Explosion