Aileron Drag
Took me thirty years before I discovered the "Masons" connection but I then left in 78!
Especially relevant when I found that the authorities test pilot appeared at the inquiry but there is no mention of him in the report and then I read his biography in handling the big jets that he is assistant master!
Sadly the little boys club didn't stop there.
The trident was speed unstable as it approached way on the backside of the drag curve.
Min drag was somewhere above 200 knots.
Had to do a go around due to an Alitalia DC 8 crew who didn't understand english, hoiked the nose up as throttles weren firewalled and the speed fell off (we were at V min app) ended up lowering the nose to accelerate and clean up.
Daren't comment on it as was having my annual route check with one of the guys who stood up against the masons at the inquiry. Didn't understand what went wrong but the proceedure was flawed as several checklists were and still were twenty years on! (cross feeding with jettison pumps and splitting the on ground emergency checklists).
We nearly lost a T three at Madrid after it lost a donk on t/o from Malaga. As usual the Madrid controllers (worst in Europe at the time) Lined up Iberia and blocked the runway. Skipper opened the taps but aircraft continues towards terra firma - he hadn't considered the WAT curves - so he pointed the nose down, cleaned up and did a very low circuit.