British Airways had a percentage of Gulf helicopters & thus Jock Cameron did the audits. Some of the big maintenance especially of new machines was done at Gatwick & then ferried back to Doha. All 5 S62 were chartered to Shell Oil & operated to the rigs off Doha & Halul Island plus on Sundays we would crew change a rig way up north to Bahrein.
Ground resonance was a problem if the tyres were flat or the oleos at the wrong pressure. Once a new engineer fixed the oleo pressure, I never got ground resonance again. Being ex Navy, I found firm positive landings helped! They were a most reliable machine but mainly thanks to the Vietnam war, for which they were not suitable, they only built about about 100 plus a few S62B which had a S58 transmission.