Aileron drag.
Don't remember where but we did have a 65sec cutback. Could have been 28 in Zurich as the noise measuring point was at Rumlang.
Height obviously depended on WAT, certainly had several cutbacks by 500ft and more disturbing for a P2 only and not adequately trained was when we started descending as we hit a bubble of descending air before we flew into the associated strong thermal.
In Evans cross examination at the inquiry he was asked about the statistics that one in eight FDR showed that SOP departures were being ignored. This didn't take into account those tapes that were chucked off Eton bridge.
Had 365 knots on a Daventry one dep by three grand once; infamous Jock who had the ship clean by 1000ft on take off power and with his nose on the glare shield yanked the throttles back as he passed over the noise points- confided that he had driven around and knew precisely their locations.
In the Wardair safety digest there is a quote from BA Doc stating that pilots over 49 should not be converted to Concorde because of 25% failure rate, although the Trident wasn't droop snoop it was beyond the capabilities of many of our older skippers including Key and our training chief who rarely ever flew without George being plugged in.
BEA had this wonderful idea that everyone could be a skipper on a complicated, unstable aircraft and that is what we had to live with as SOs.