The Pitcairn Mailwing family is a series of American mail carrier and three-seat sport utility biplane aircraft produced from 1927 to 1931. == Design and development == The Pitcairn Mailwings were developed to carry air mail for the United States Post Office Department.
The Pitcairn Mailwing family is a series of American mail carrier and three-seat sport utility biplane aircraft produced from 1927 to 1931. == Design and development == The Pitcairn Mailwings were developed to carry air mail for the United States Post Office Department.
Source: Wikipedia "Pitcairn Mailwing" · CC BY-SA 4.0
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