Owl aircraft reference catalogue

FAA Aircraft Characteristics Database (October 2024): U.S. government reference data.
https://www.faa.gov/airports/engineering/aircraft_char_database

OpenAP aircraft data: Copyright OpenAP contributors / Junzi Sun.
Licensed under GNU LGPL version 3. Source YAML, original license and per-file Git hashes are included in catalogue-sources.zip. The LGPL incorporates GPL version 3, also included.
https://github.com/junzis/openap

Selected manufacturer specifications: factual values with original publisher links and configuration notes in the SQLite sources/specifications tables. No aircraft manuals, product imagery or marketing articles are reproduced.

sql.js runtime: MIT License; see /vendor/sqlite/LICENSE.
SQLite core: public domain.

The source archive contains the dataset inputs, import script, schema and provenance notes. It does not include dependencies; install the project's declared sql.js and yaml packages to rebuild with the supplied script.

Engine reference properties are also derived from OpenAP (LGPL-3.0); raw CSV, JSON conversion and SHA-256 provenance are included in the source archive.
Flight Science articles are original educational summaries referring to FAA Pilot’s Handbook chapters and NASA Glenn educational material. Individual source links are held in SQLite.