Pitcairn Mailwing
1927 mailplane family by Pitcairn

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. Of simple and robust construction, they had relatively benign flying characteristics.
They were constructed using chrome-moly steel tube and square-section spruce spars with spruce and plywood built-up ribs. The fuselage was faired using wooden formers and covered with fabric. The tail sections were built up from steel tube and fabric-covered. The Pitcairn Mailwing had a ground-adjustable fin and in-flight adjustable tailplane.
The undercarriage was of outrigger type with Oleo-Spring shock absorbers and disc brakes on the mainwheels. All versions looked very similar and changes were minor, with several fuselage extensions being the most obvious.
The mail was carried in a fireproof metal-lined compartment forward of the pilot's cockpit.
This brief starts where responsible research should: with the source description of “Pitcairn Mailwing” as 1927 mailplane family by Pitcairn. Everything that follows is an evidence route, not borrowed authority.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 14, 2026. The linked authority identifier is Q2533014. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1927 and 1931.
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This entry incorporates text from “Pitcairn Mailwing” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.