On 30 June 1980 Piper began production deliveries of a new version of the Cheyenne range of twin turboprop aircraft. Intended for use as a 6/11-seat corporate or commuter transport, this Cheyenne III differs considerably from its predecessors, a fact reflected in the changed company designation Piper PA-42. It has a wing of increased span, lengthened fuselage, a T-tail, and more powerful Pratt & Whitney Aircraft of Canada PT6A turboprop engines installed in lengthened nacelles. The Cheyenne III remains as a current production model, being complemented by the Cheyenne IIIA which differs primarily by having 634kW PT6A-61 turboprop engines flat-rated at 537kW and offering performance improvements. In addition to the Cheyenne III, Piper was involved in the certification programme of a new Cheyenne IV during 1983, with two 1,227kW Garrett TPE331-14A/14B counter-rotating turboprop engines, each of them flat-rated at 746kW. Deliveries of the Cheyenne IV began in the early summer of 1984. It was one of the fastest propeller light twins, at over 644km/h.
The Cheyenne is one of the very few Piper products to remain in volume production after the company's financial reorganisation in 1991/92. Current versions on offer include the Cheyenne IIIA of which 59 had been delivered by early 1993. Nine Cheyenne Ills delivered to the US Drug Enforcement Administration, fitted with AN/APG-66 radar and a ventral FLIR, are used for day- and nighttime surveillance missions. They are
known as Customs High Endurance
Tracker (CHET) aircraft. Cheyenne Ills are joined at the Lock Haven production line by the PA-42-1000 Cheyenne
400. Originally the Cheyenne IV, it later became the Cheyenne 400LS. Deliveries total 43.
| MODEL||PA-42-Cheyenne III|
| ENGINE||2 x Pratt & Whitney Aircraft of Canada PT6A-41 turboprops, 537kW|
| Take-off weight||5080 kg||11200 lb|
| Empty weight||2898 kg||6389 lb|
| Wingspan||14.53 m||48 ft 8 in|
| Length||13.23 m||43 ft 5 in|
| Height||4.5 m||15 ft 9 in|
| Wing area||27.22 m2||292.99 sq ft|
| Max. speed||549 km/h||341 mph|
| Ceiling||9755 m||32000 ft|
| Range||4150 km||2579 miles|
|Waldo, rgb927=yahoo.com, 22.08.2012|
The Cheyenne III was designed and built at the Lakeland,FL plant...It was never assembled in Lock Haven
Correction, Garrett engines.
|J.D. Stewart, 23.03.2010|
The photo your using for the Cheyenne III is actually a Piper Cheyenne IV, which utilized Air Research engines.
Do you have any comments about this aircraft ?