Murphys
Safetypee,
Hi,
Thank you for your detailed reply. It would have needed many Murphys to have spotted the " X 10 " on the Hermes Variation Setting Control, and it did happen at night... Those of us who knew, sympathised with the crew in question and were glad that this one combination of circumstances had been done by somebody else, FIRST.
And this had been modified before we flew the aircraft. It was some time more before we had the flagstaff bracket removed, liable to harm either pilots head, if hit.
It was a mistake ready to happen one day !
(Perhaps it was just as well that "above" had not continued, by insisting on TAS on all instrument panels.)