I dont think there was anything in terms of the flight characteristics that was outside of the ability of a trained pilot, especially one that didnt
intend to ever come back again...
However, I agree, it likely WAS not Al Quaida... my money is on a Mossad team, or at least a freelance team hired and coordinated by Mossad.
Here is a theory...
At the time, Iraq was making lots of noise about forcing a vote in OPEC to change the oil standard currency from the US dollar to the Euro. In fact,
Iraq itself had already performed this transaction internally with all its oil dealings.
In doing so, Iraq forged many business deals with prominent members of the EU, notably France and Germany, who had the most to gain from such a swap
in currencies.
The US, (or conversely the Cabal, as the ultimate owner/operator of the US economy) recognized and understood the threat that this chain of activity
posed. Also, being the masters of public psychology that they were, they understood that it would be impossible to pull off any kind of military
action (about the only real option to prevent this transaction in Iraq) without public opinion behind it. In order to put public opinion behind any
such military action, the US would have to suffer a very serious blow with massive civilian casualties...
And the US government would be complicit in this action.
Sort of like at Pearl Harbor.
Coordinating with Israel would be a natural chain of events, as Israel would be the ultimate beneficiary of any war between the US and any OPEC
nation. Allowing Mossad to run the attack would provide plausible deniability in the event that any information ever leaked to the public, and would
assuage the morality of the Cabal/government that at least THEY were not the ones actually killing thier own civilians