Originally Posted by
WHBM
I remember seeing a couple at Everett in late 1969 with concrete blocks hanging from the engine mounts to maintain the stresses.
In recent times there were a lot of 787s idle at Everett for an extended period, also with blocks instead of engines.
I wondered if they were the same concrete blocks ...
No, they weren't. The 'cement block engines' are specific to the installation, and while less common, they've appeared from time to time on all the various Everett products. Sometimes due to engine shortages, but more often because the aircraft won't be delivered for some time and storing an aircraft with tens of millions worth of engines installed is not cost effective.
Besides, the 787 engines weigh roughly twice what the 747 engines weigh...