DEN00GA089 · Cessna T337C
United States Forest Service Cessna T337C · Accident: loss of engine power while maneuvering
From Alamogordo White Sands Regional Airport (ALM) to an unrecorded destination
Event
- NTSB case
- DEN00GA089
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 2 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Cessna T337C
- Aircraft type
- Cessna 337
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N2522S
- Operator
- United States Forest Service
- Onboard fatalities
- Unknown
- Route
- From Alamogordo White Sands Regional Airport (ALM)To not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of engine power
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Stall/spin
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Pilot in command › Aircraft control, not maintained
- Pilot in command › Stall/spin, inadvertent
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Four minutes after takeoff, the airplane was observed flying straight towards rising terrain (other pilots reported that there had been uplifting air movement there the previous several days). Radar data indicates that the airplane leveled off, and began to slow down. The airplane changed direction and flew over the edge of a 1,000 foot canyon; it then turned north towards rising terrain a second time. A witness said that he couldn't hear any engine sound; he observed the airplane spin towards the ground. He then heard an impact sound, and saw smoke. Examination of the accident site revealed that the airplane impacted the ground in a vertical attitude. The airplane was found with the rear propeller feathered, and the front propeller with no signatures of power. The rear engine fuel selector was found between main and off, and the front engine fuel selector was found on auxiliary. Normal procedure is to fly for an hour after takeoff on the main tanks. Pilots on later flights in this area reported "strong turbulence and very strong variable vertical air movements." The FAA recommends that a mountain ridgeline should be crossed at an angle to allow the pilot to turn away from the ridge with the least amount of turn required should down air be encountered.
Probable cause
the pilot's failure to maintain aircraft control, and the subsequent inadvertent stall/spin. Contributing factors were the loss of engine power on both engines for unknown reasons and the terrain induced turbulence.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN00GA089
- Event ID
- 20001212X20975
- Case number
- DEN00GA089
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 9bfb6a71a4cf326104a5e2a270051bbd1682f8695b7ae2b39999265f64d404ef; retrieved 2026-09-20T21:13:42.357Z.