Posts: 858
Joined: Mon Jun 14, 1999 7:12 am

AA's Numbering System

Mon Jun 14, 1999 12:59 pm

Does anyone know why AA numbers aircraft the way they do? Specifically, 757s use both alpha-numeric and numerical designations. The oldest a/c, 610-643 are straight numbers. 644 and up use letters too. 5BP and up. The newest aircraft, 673-680, and the 180s are also alpha-numeric. Why is this?

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