Two stories off on a tangent but brought to mind from previous stories;
The first from placing wooden chocks in the fan to stop rotation because of lack of lubrication; the BA flight from LAX to MAN did 11 hours with a damaged engine whilst the engine certification was for 2 hours windmilling.
Another BA 747 incident was in Dubai iirc when one engine starter motor broke; after consultation with the FE and looking through the relight envelope decided they could bump start the engine. This didn’t go well and they ended up having an extended layover whilst BA shipped out a full set of main undercarriage tyres/wheels after they aborted the attempt and blew the fuses.