FlyerTalk Forums - View Single Post - Spotting tip: How can one tell an AA 772 from AA 77W?

Feb 9, 2014 | 6:45 pm

#8

AA2070

Join Date: Apr 2005

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Quote:

Originally Posted by cmd320

Another distinguishing factor between AA's 77W and 772 are the engine types, though a bit more subtle to the untrained eye. The 77W has the massive GE90s which have a noticeably larger inlet area compared with the RR engines on the 772.

The GE90 is 135 inches in diameter, and the entire cabin width of the 737 is only 139 inches. So if you see a 777 that looks like it can fit a 737 in each engine, it's a 77W.