A home made detonator was shown to work but because we were running so many remote cameras with limited endurance a regular det was used for reliability.
So it wasn't a totally realistic test.
And another thought...
It also could be mixed prior to takeoff but it was said to be initially unstable then slowly looses it omph..
Just as the report I quoted from the Internet said - the stuff is very unstable until it has several hours to settle down AND
solidify which means it was highly likely that the device would have detonated whilst the lunatic was still in the toilet, trying to ignore the pounding on the door and the inevitable attention of the cabin crew.
There have been bombs in toilets on aircraft before where, despite a hole in the fuselage, the aircraft structure has been strong enough to enable the aircraft to be landed safely. <Quote> "They build 'em strong at Boeing" <Unquote>