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originally posted by: Zaphod58
The Pentagon has implemented a program of borescoping the engines every three to six flight hours, depending on airframe type.
originally posted by: rickymouse What happened to reliable equipment that was trouble free till it's next scheduled inspections and rebuilds?
The F135 is the heaviest high-performance fighter engine ever built, weighing 70% more than the P&W F100 and measuring 24% larger in diameter, with consequently larger inertial and gyroscopic forces. The Pegasus engine in the AV-8B Harrier II, with a similar diameter to the F135, suffered from blade rubbing in the event of departures from normal flight, and those engines had to be removed for inspection and overhaul.