SEA03LA020 · Grumman American AA-1
Grumman American AA-1 · Accident: partial loss of engine power (non-mechanical) on approach
From Chehalis Centralia Airport (CLS) to an unrecorded destination
Event
- NTSB case
- SEA03LA020
- 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
Grumman American AA-1
- Aircraft type
- Grumman American AA-1
- 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
- N5985L
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Chehalis Centralia Airport (CLS), Chehalis, WATo 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
- Approach · VFR pattern final
- 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
- Reason for occurrence undetermined
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
On the day of the accident, the pilot landed at the Chehalis-Centralia Airport and then had lunch with his son. After lunch, the pilot and his son decided to take a short flight to look at some nearby property. After takeoff, the pilot climbed to a little over 2,000 feet, and flew toward the location of the property. As the aircraft neared the subject area, he discovered that the property was covered by dense low-level fog. They therefore headed back to the airport. During the last part of the descending approach, the pilot advanced the power lever, but there was no response from the engine. The pilot attempted to stretch the glide to the end of the runway, but he was unable to do so, and he ultimately ended up ditching in a long narrow pond that was closely aligned with his approach heading. During the investigation it was determined that the selected fuel tank had about one gallon of fuel in it when the aircraft was recovered. It was also determined that the aircraft was operating in icing conditions severe enough that carburetor icing could be expected at cruise power and below. At the termination of the investigation, it could not be positively determined if the aircraft's engine was starved of fuel due to the low quantity in the selected left tank, or whether the pilot had forgotten to apply full carburetor heat resulting in a loss of power due to an accumulation of ice in the carburetor.
Probable cause
The total loss of engine power, for undetermined reasons, while the aircraft was on a VFR final approach. No suitable terrain for landing and water were factors.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA03LA020
- Event ID
- 20030115X00067
- Case number
- SEA03LA020
- 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: a1acee48f58f0eb18fb3fd0480e6c563f73fad925ba34fc89662ffc1442decea; retrieved 2026-09-21T09:32:27.055Z.