Aerotécnica AC-14
type of aircraft
The Aerotécnica AC-14 was a Spanish five-seat light helicopter of the 1950s, designed by Jean Cantinieau, based on enlarging his Nord Norelfe design.
The AC-14 continued the Cantinieau practice of mounting the engine forward of the main rotor, and like the Norelfe, used the ducted exhaust from the turboshaft to counter the torque of the main rotor at low speeds, while at high speeds the exhaust gases were deflected rearwards to increase speed, torque being compensated for by movable twin tail fins.
The first of prototype flew on 16 July 1957. The Spanish Air Force placed a pre-production order for ten machines where they served for a short time under the designation EC-XZ-4. No full production ensued, as they were much more expensive than second-hand Bell 47G-2 and G-3s.
Operators
Spain
Spanish Air Force - Ten pre-production aircraft only.
Specifications
Data from Janes' All The World's Aircraft 1961–62General characteristics
Crew: 1
Capacity: 4 passengers
Length: 8.13 m (26 ft 8 in)
Height: 3.10 m (10 ft 2 in)
Empty weight: 650 kg (1,433 lb)
Gross weight: 1,250 kg (2,756 lb)
Max takeoff weight: 1,350 kg (2,976 lb)
Powerplant: 1 × Turbomeca Artouste IIB turboshaft engine, 300 kW (400 hp)
Main rotor diameter: 9.65 m (31 ft 8 in)
Main rotor area: 72.35 m2 (778.8 sq ft)
Performance
Maximum speed: 180 km/h (110 mph, 97 kn)
Cruise speed: 150 km/h (93 mph, 81 kn)
Range: 300 km (190 mi, 160 nmi)
Ferry range: 640 km (400 mi, 350 nmi) (with auxiliary tanks)
Service ceiling: 6,800 m (22,300 ft)
Rate of climb: 4.62 m/s (909 ft/min)
See also
Aerotécnica
Related development
AC-11
AC-12
AC-13
Aircraft of comparable role, configuration, and era
Nord Norelfe
References
Further reading
Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
Simpson, R. W. (1998).
This brief starts where responsible research should: with the source description of “Aerotécnica AC-14” as type of aircraft. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as type of aircraft. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Apr 1, 2025. The linked authority identifier is Q2332884. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1957, 1961, 1989 and 1998.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. 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 “Aerotécnica AC-14”, its source revision and the description used here.
- Expand the search: follow Aerotécnica AC-14 primary sources, Aerotécnica AC-14 archive and Aerotécnica 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 “Aerotécnica AC-14”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Aerotécnica AC-14” 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.