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A significant advance in the Navajo family came on 22 October 1973 when Piper flew the first production example of the PA-31T Cheyenne, which combined an airframe generally similar to that of the Pressurized Navajo with two 620hp Pratt & Whitney Aircraft of Canada PT6A-28 turboprop engines.
 | A three-view drawing (1178 x 844) |
| MODEL | PA-31T Cheyenne II |
| CREW | 1 |
| PASSENGERS | 6 |
| ENGINE | 2 x 620hp Pratt & whitney PT6A-28 turboprops |
| WEIGHTS |
| Take-off weight | 4082 kg | 8999 lb |
| Empty weight | 2257 kg | 4976 lb |
| DIMENSIONS |
| Wingspan | 13.01 m | 43 ft 8 in |
| Length | 10.57 m | 35 ft 8 in |
| Height | 3.89 m | 13 ft 9 in |
| Wing area | 21.3 m2 | 229.27 sq ft |
| PERFORMANCE |
| Cruise speed | 525 km/h | 326 mph |
| Range | 2557 km | 1589 miles |
| Dave Marshall, dpmarshall=prodigy.net, 24.02.2011 Actaully the T1020 was a hybrid Navajo/Chieftain, with some modifications for increased payload (target was full seats at avg weight and fuel mains only), hardening, dispatch reliability etc. The T1040 was more a unpresurized Cheyenne, it had Cheyenne tail, wings, nose, nacelles, systems etc, with a T1020 fuselage and added cargo pod & wing lockers. The folks in Alaska called it a "diesel powered Chieftain" when it first arrived. | | david edell, cca1=earthlink.net, 15.01.2011 Performance numbers are over rated. | | Scott Boyd, scottb50=hotmail.com, 06.06.2010 The T1020 and T1040 were from the same family as the Cheyenne that started with the Navajo, just another branch. They were more a hybrid of both, unpressurized Navajos with turbine engines while the Cheyenne was developed from the pressurized Navajo.
At best they should have their own section or be part of the Navajo section. Neither this section or the Navajo section have any references to them anyway. | | Eric Foster, eric564foster=yahoo.com, 25.03.2010 The T1020 and T1040 are not from the Cheyenne family!!! | | Scott Boyd, scottb50=hotmail.com, 08.03.2010 I flew both the I and II and flew the P-Navajo a couple of times. The Navajo took three different tries getting off the ground the first time I flew it and something invariably broke on every flight. The Cheyenne's were a completely different story. Fast and reliable we used them for air-ambulance flights for a number of years | | Andypilot333, geffallen=btinternet.com, 11.08.2008 Number six in my top six all-time favourite aircraft. |
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