Back in 1989 it got into severe quality production problems with the 747-400. Here’s an investigation I did in Seattle (Boeing’s base)
David Leigh and I broke this story in 1982 about the Prime Minister’s son acting as a middle man in Oman. This story is so interesting that the official UK public records have been withheld until 2053.
The backstory of how the Sultan overthrew his father in 1979 is an interesting one. He was helped by Sandhurst chum Brigadier Timothy Landon who was the connection with the Foreign Office. Landon went on to be the Sultan’s fixer and when he died a few years back had a huge home counties estate and left £200m. Not bad for a Brigadier.