CASA C-207 Azor — Primary-Source Documentation Collection
The CASA C-207 Azor (Spanish Air Force designation T.7) was the most ambitious transport aircraft produced by Construcciones Aeronáuticas S.A. in the postwar decade — a low-wing, all-metal, twin-engine airliner and military transport that represented the peak of Spanish indigenous aerospace engineering in the 1950s. Powered by two imported British Bristol Hercules 730 14-cylinder sleeve-valve radial engines, each delivering 2,040 hp at takeoff, the Azor offered a performance envelope and structural integrity that no Spanish-built powerplant of the era could match.
Only 22 airframes were completed — including two prototypes — making primary-source documentation for this type exceptionally rare. This Living Collection brings together the core factory and military technical publications for the Azor and its Bristol Hercules 730 powerplant in a single archival edition.
Document Manifest
1. CASA C-207 Azor — Flight Manual (Manual de Vuelo)
Spanish Air Force reference: T.O. 1T-7-1 · Dated: 1 October 1966
Covers T-7A (passenger) and T-7B (cargo) configurations. Contents include emergency procedures, V-speed limitations, stability envelopes, center-of-gravity profiles, and airspeed limits across all operational configurations. Approximately 250 pages.
2. CASA C-207 Azor — Maintenance & Handling Manual (Manual de Entretenimiento)
Dated: April 1967
A 432-page engineering text covering structural ground stability, landing gear systems, rigging procedures, and control surface maintenance. The definitive technical reference for ground crews operating the T.7 fleet.
3. Bristol Hercules 730 Series Engines — Maintenance Manual
Publisher: Bristol Siddeley Engines Limited, Aero Division, Technical Publications Department · P.O. Box 3, Filton, Bristol, England
Original copyright: Bristol Aero-Engines Ltd, June 1952 · Re-issued with Amendment 36
The primary factory maintenance reference for the Hercules 730 powerplant as fitted to the Azor. Covers all engine systems, servicing intervals, and overhaul procedures.
4. CASA C-207 Azor — Original Manufacturer's Brochure
Publisher: Construcciones Aeronáuticas S.A. (CASA)
Includes: period colour illustration, full dimensional drawings (three-view), weight distribution tables for 30-, 35-, and 40-passenger configurations, performance data sheet, and structural cutaway drawing. A rare primary marketing and engineering summary document from the original manufacturer.
Aircraft Technical Summary
Airframe & Dimensions
Wingspan: 27.80 m · Wing area: 85.80 m² · Wing profile: Naca 23010-18
Length: 20.85 m · Height: 7.75 m
Fuselage cabin: 20.95 m length · 1.94 m height · 2.38 m width
Horizontal stabiliser span: 10.12 m · Vertical stabiliser span: 6.76 m
Powerplant
Two Bristol Hercules 730 · 14-cylinder sleeve-valve radial · 2,040 hp (1,522 kW) per engine at takeoff
Propellers: four-blade, constant-speed, fully feathering de Havilland
Weights
Empty weight (equipped): 10,538–10,613 kg depending on configuration
Minimum operating weight: 10,075–10,150 kg
Maximum takeoff weight: 17,000 kg
Performance
Cruising speed: 350–416 km/h · Maximum speed: 420 km/h
Range: 2,350 km · Service ceiling: 8,000 m · Rate of climb: 5.5 m/s
Takeoff run: 560 m · Static action radius: 2,900 km
Payload: 3,680 kg
Configurations
T-7A: up to 40 passengers · T-7B / CASA 207C: up to 37 paratroopers, reinforced cargo floor, dual oversized cargo doors
Production
22 airframes total (including 2 prototypes) · Operated exclusively by the Spanish Air Force
Historical Note
The Azor entered service in the mid-1950s as a direct scaled-up successor to the CASA C-202 Halcón. The absence of cabin pressurization limited commercial airline interest, directing all production to military service. A 1958 collaborative study with Hamburger Flugzeugbau (HFB) proposed turboprop re-engining, but the programme was abandoned in favour of what would eventually become the CASA C-212 Aviocar. Original engineering archives are preserved within the Ejército del Aire historical archive and the Airbus Getafe facility collections (successor to CASA via EADS).
This is an archival, static-copy edition fixed at its original publication date. Intended for historical reference, flight simulation, museum restoration, and educational use only. Not approved for active airworthiness maintenance under FAA 14 CFR § 43.13, EASA Part-M, or equivalent international regulations. Operators of active aircraft must use current, revision-controlled publications from the Type Certificate holder or an authorized distributor.
⚠️ Regulatory Notice: Under FAA 14 CFR § 43.13 and EASA Part-M, any mechanic performing maintenance on an active aircraft must use current, manufacturer-approved revision-controlled data. This archival document does not satisfy that requirement.
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