Don't know about the crews, but the old Boeing 377 Stratocruiser in the 1950s was always a notable delight to the passengers, downstairs cocktail bar and everything.
However, it had R-4360 engines. These had 7-cylinder radial banks, with FOUR banks per engine, arranged in an offset spiral to try and get some cooling air to all cylinder heads. So 28 cylinders per engine, four engines, two spark plugs per engine. Done the arithmetic yet ? 228 spark plugs. There was apparently some defect that could arise (anyone know what) which required ALL the spark plugs to be changed before next flight, an event which had a regular habit of happening downroute on a weekend evening. I wonder how long it took. Overtime and night rate premiums were generous, and apparently station engineers made enough over a couple of expat years for BOAC or Pan Am to buy a house for cash when they finally returned.