Cessna T310R accident near Cody, Wyoming, July 18, 2015
On July 18, 2015 at about 5:55 pm local time, a 1979 Cessna T310R, registered N72TP, was destroyed in an accident during enroute (climb to cruise) near Cody, Wyoming. It was a personal flight under general aviation rules (Part 91). 4 people were killed. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot's loss of airplane control following the loss of power in the left engine; the reason for the loss of power could not be determined during postaccident engine examination.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 18, 2015 · about 5:55 pm local time
- Place
- Cody, Wyoming · map
- Type
- Accident
- Injuries
- 4 people were killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna T310R R, built 1979 · all T310Rs on the register
- Registration
- N72TP · registry record · serial 310R1628
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
After flying over Yellowstone National Park at 13,500 ft, the pilot requested an instrument flight rules (IFR) clearance direct to Billings Logan International Airport (BIL), Billings, Montana. At that time, the airplane was at 13,300 ft and was below the minimum en route altitude of 14,400 ft. After confirming that the pilot could maintain terrain and obstacle clearance, the controller issued an IFR clearance direct to BIL (to the north-northeast) and instructed the pilot to climb to and maintain 15,000 ft. An AIRMET was in effect for icing between 14,000 ft and FL (flight level) 220 in the area; the controller did not provide this information to the pilot, and it could not be determined if the pilot was aware of the AIRMET. After the airplane reached 15,000 ft, the controller made a radar handoff and attempted to transfer radio communications, but the pilot did not respond. The controller stated that the airplane turned east and began a rapid descent. The airplane impacted a creek bed in heavily wooded mountainous terrain at an elevation of 7,762 ft. Tree heights were about 100 ft. There was a scrape mark on the side of one tree, and another tree had the top broken off. No other trees were damaged, consistent with the airplane having descended through the tree canopy in a near-vertical attitude. The airplane was severely fragmented and had been exposed to a postimpact fire. The wreckage, engines, propellers and turbochargers were subsequently examined. The left propeller bore evidence of little or no rotation. Disassembly revealed it was in the "low pitch/high rpm" position. Disassembly of the left engine revealed no anomalies. The left engine turbocharger turbine bore no rotational marks and could not be rotated. No rub marks were noted on the turbine housing. It is likely that the left engine was not operating at the time of impact. The outboard end of the recovered right propeller blade bore chordwise scratches. Disassembly of the right engine revealed no anomalies. The right engine turbocharger turbine rotated freely when turned by hand. The pilot likely lost control of the airplane following the loss of left engine power. Although the airplane was operating in an area conducive to aircraft icing, the reason for the loss of engine power could not be determined during postaccident examinations.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Loss of engine power (total) during enroute (climb to cruise)
- Loss of control in flight during enroute (climb to cruise) defining event
- Collision with terrain or object (not controlled flight into terrain) during uncontrolled descent
The NTSB's findings
- cause Not determined › Not determined › (general) › (general) › Unknown/Not determined
- cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › (general) › Not attained/maintained
Pilot
- Certificate: commercial pilot
- Ratings: multi-engine land; single-engine land; instrument: airplane
- Flight time: 571 hours in all; 163 in this make and model
- Medical certificate: Class 3 (without waivers/limitations)
- Seat: left
- Injury: fatal
The aircraft
- Seats: 6
- Landing gear: retractable
- Fire on the ground
- Operator: Independence Aviation LLC
The flight
- Departed from: SHR Sheridan WY at 4:30 pm
- Destination: BIL Billings MT
- Flight plan: IFR
Weather at the time
- Light: daylight
- Wind: from 010° at 5 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 61°F (16°C), dew point 43°F (6°C)
- Altimeter: 30.19 inHg
- Observation at 5:55 pm from COD
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 3 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number CEN15FA307.