# Accident 19750720025789A: Grumav AA1A, Portage, WI, July 20, 1975

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 20, 1975
- Place: Portage, WI
- Damage: Destroyed
- Phase of flight: Roll-Out (Fixed Wing)
- Location: 43.5490° N, 89.4659° W: Placed by OpenAirDocs: center of Portage, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.5490&lon=-89.4659&mi=10
- Aircraft: N9251L, a cancelled registration (https://openairdocs.org/deregistered/N9251L-1975-10-03) (OpenAirDocs)
- Registry model: American AA-1A (registry code 0630710, https://openairdocs.org/model/american-aa-1a) (OpenAirDocs)
- Reported make and model: GRUMAV AA1A
- Fatal injuries: 0
- Pilot flight hours: 4,084 total, 108 in this make and model, 103 in the last 90 days
- NTSB investigation: [NTSB CHI76DEP10](https://openairdocs.org/ntsb/CHI76DEP10) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19750720025789A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ENG SURGE.FLD APPEARED SMOOTH FM AIR,RUTS AND CLUMPS OF DIRT CAMOUFLAGED BY WEED CVR.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI76DEP10](https://openairdocs.org/ntsb/CHI76DEP10), Jul 20, 1975: Grum Amer AA1-A (N9251L), Portage, WI, substantial damage

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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