Transportation Engineering Codexery — Data & Quality

We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.

Last full accuracy audit: 2026-08-27 · 5 entries checked · 3 flagged · 6 issues confirmed · 3 corrected · 3 still open

Recent findings (audit lane, verbatim)

Aircraft — The claim that Langley's patent was the first US patent for an aircraft is misleading; earlier patents for aircraft-like devices exist.

Aircraft — The Stratolaunch was not 'under construction' as of 2016; it was completed and first flew in 2019.

Aircraft engine — The Manly–Balzer engine is described as being from 1903, but it was actually built in 1901 and tested in 1902.

Aircraft engine — The Armstrong Siddeley Jaguar IV (S) is described as an early series-produced geared engine from 1926, but it was actually introduced in 1927.

Airplane — The Boeing 707 was not in commercial passenger service until 2010; most airlines retired the 707 from passenger service by the early 1980s, and the last major U.S. carrier (TWA) retired its 707 passenger fleet in 1983.

Open data

All content is fetchable as JSON at /data/content/ · llms.txt · sitemap

Corrections

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