Learjet 55
1979 executive business jet aircraft
The Learjet 55 "Longhorn" is an American business jet manufactured by Learjet.
Development and design
The Learjet 50 series was first announced at the 1977 Paris Air Show with larger cabins than existing Learjets. The series was to have three variants, the Learjet 54, 55 and 56 but only the Learjet 55 was built. The Learjet 55 was a low-wing cantilever monoplane with NASA-developed winglets. The aircraft has a T-tail and is powered by two Garrett TFE731 turbofans mounted each side of the rear fuselage. It has a retractable tricycle landing gear and an enclosed cabin for up to ten passengers and a cockpit for the two crew. Construction of the Learjet 55 began in April 1978 after extensive testing and work on the wing design which came, initially, from the Learjet 25. The Learjet 55 first flew on 19 April 1979. The first production aircraft were produced starting 18 March 1981. In total, 147 Learjet 55 aircraft were delivered.
The public source identifies “Learjet 55” as 1979 executive business jet aircraft. This brief keeps that definition visible, then builds a research path around Learjet, executive and business.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Learjet 55”, the useful work is to connect “1979 executive business jet aircraft” to the records capable of establishing context and consequence.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 27, 2026. The linked authority identifier is Q2984147. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1977, 1978, 1979 and 1981.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Learjet 55”, its source revision and the description used here.
- Expand the search: follow Learjet 55 primary sources, Learjet 55 archive and Learjet research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Learjet 55”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Learjet 55” 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.