ANC04LA031 · Cessna 182M
Cessna 182M · Accident: partial loss of engine power (non-mechanical) during initial climb
From Yakutat Airport (PAYA) to Merrill Field (PAMR)
Event
- NTSB case
- ANC04LA031
- 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
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- 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 182M
- Aircraft type
- Cessna 182
- 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
- N71886
- Operator
- Robert J. Edison · private individual
- Onboard fatalities
- Unknown
- Route
- From Yakutat Airport (PAYA), Yakutat, AKTo Merrill Field (PAMR), Anchorage, AK
- 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
- Initial climb
- 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
- Partial loss of engine power (non-mechanical)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Carburetor heat, delayed
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The airline transport certificated pilot stopped for fuel on a night cross-country flight. After fueling, the pilot said he drained the fuel system sumps and found no contaminants. He performed an engine run-up, and then departed. After takeoff, about 400 feet above the ground, the engine began to run rough and slowly lose power. The pilot switched fuel tanks and applied carburetor heat, but engine power continued to decline, and the airplane lost altitude. He made a 180 degree left turn toward the airport and made an emergency, off-airport landing, during which the airplane collided with a ditch. The airplane received structural damage to the left wing, fuselage, and landing gear. A postaccident examination of the airplane's engine revealed that the spark plugs were sooted, and no other mechanical malfunction was found. At the time of accident, the temperature was 37 degrees F (+3 degrees C), and the dew point was 31 degrees F (-1 degree C). FAA Advisory Circular (AC) 61-23C, states, in part: "... if the temperature is between -7 degrees C and 21 degrees, with visible moisture or high humidity, the pilot should be constantly on the alert for carburetor ice. During low or closed throttle setting, an engine is particularly susceptible to carburetor icing. AC 20-113, states, in part: "Vaporization icing may occur at temperatures from 32 degrees F to as high as 100 degrees F with a relative humidity of 50 percent or above... Since aviation weather reports normally include air temperature and dew point temperature, it is possible to relate the temperature/dew point spread to relative humidity. As the spread becomes less, relative humidity increases and becomes 100 percent when temperature and dew point are the same. In general, when the temperature/dew point spread reaches 20 degrees or less, you have a relative humidity of 50 percent or higher and are in potential icing conditions." The airplane was equipped with a carburetor air temperature gauge that was marked with a yellow arc between -15 degrees to +5 degrees celsius. The yellow arc indicates the carburetor temperature range where carburetor icing can occur.
Probable cause
The pilot's delayed use of carburetor heat, which resulted in an engine power loss during takeoff-initial climb, a forced landing, and subsequent collision with terrain. A factor contributing to the accident was the presence of carburetor icing conditions.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC04LA031
- Event ID
- 20040212X00186
- Case number
- ANC04LA031
- 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, coordinates. 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: e52fdb7322790c3d56b8b06c7d4a6ef97630cc9399379f45a7a4b7765cc0b6cf; retrieved 2026-09-22T07:58:48.422Z.