Perhaps, but at the time I was looking for an anouncement of that grounding.
I never saw or heard of one.
I did see a small announcement, years later, that the last 747 needing a new fuel pump and sensor assembly had been upgraded.
Presumably it was in service up to that point. If the 747s were flying ticking time bombs, surely one country somewhere would have forbidden them in their airspace?
Therefore, I assume it wasn't a flaw in the aircraft.
It was enemy action.
Seven years and nineteen days after the USS Vincennes shot down Iran Air Flight 655. That's 7 years and 19 days by the Christian Gregorian Calendar, does anyone know what that delay is in the muslim lunar calendar Iran uses?
11 days.
With a quick google search, I discovered they weren’t grounded, which considering how long the investigation took and the lack of a subsequent incident in close proximity to the first (as happened with the 737MAX accidents) perhaps isn’t surprising. Grounding an entire class of civilian aircraft is a big deal.
But, reasonably early on - 1996 - the FAA began a series of maintenance instructions and other incremental steps that eventually culminated in Special Instruction ruling from FAA...