ERA12LA241 · Cessna 172K
Maine Coastal Flight Cessna 172K · Accident: loss of engine power (partial) en route
From Hancock County-Bar Harbor Airport (BHB) to Portland International Jetport (PWM)
Event
- NTSB case
- ERA12LA241
- 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 172K
- Aircraft type
- Cessna 172
- 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
- N46492
- Operator
- Maine Coastal Flight
- Onboard fatalities
- Unknown
- Route
- From Hancock County-Bar Harbor Airport (BHB), Bar Harbor, METo Portland International Jetport (PWM), Portland, ME
- 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
- En route · cruise
- Defining eventThe 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 (partial)
- 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
- Personnel issues › Action/decision
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
According to the pilots, while in cruise flight at 6,500 feet mean sea level, the engine lost partial power. The flight instructor applied full rich mixture and carburetor heat. Maintaining partial engine power, the flight diverted to a nearby airport. The pilots were unable to activate the pilot-controlled lighting at the airport and elected to utilize the airport's rotating beacon to locate the runway. The runway was located; however, the airplane was not in a position to make a landing, and the flight instructor applied full power in order to perform a go-around. During the go-around the engine experienced a total loss of power, and the flight instructor subsequently executed a forced landing to a nearby road. During the landing, the airplane struck a utility pole and nosed over. A postaccident test run of the engine revealed no evidence of any mechanical anomalies. According to postaccident photographs of the cockpit, the audio control panel was selected to Comm 1; however, Comm 2 was the radio that was set to the airport's common traffic advisory frequency, which was used for the pilot-controlled lighting. The airplane was operating in conditions conducive to serious carburetor icing at cruise power at the time of the accident. The probability existed that the airplane was operated in an area conducive to induction icing, and, although the flight instructor applied carburetor heat, the accumulation of the ice was greater than the application of heat could melt. It is further possible that during the go-around the abrupt throttle movement to the full power setting caused the total loss of engine power.
Probable cause
The flight instructor’s failure to ensure the radio was set correctly to activate the pilot-controlled lighting, which resulted in poor positioning for a proper landing and a subsequent off-runway forced landing during an attempted go-around. Contributing to the accident was a partial loss of engine power due to carburetor ice.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA12LA241
- Event ID
- 20120321X23409
- Case number
- ERA12LA241
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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: f7ac2c185eaed5540a179890dda988ad67a9523bffd39ef0f62df07c6291410a; retrieved 2026-09-15T17:30:43.605Z.