# NTSB SEA76FYC17: Grum Amer AA5, N9266L, Hillsboro, OR, September 7, 1975

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: September 7, 1975
- Place: Hillsboro, OR · HILLSBORO, OR
- Location: 45.5253° N, 122.9364° W: Placed by OpenAirDocs: center of Hillsboro, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5253&lon=-122.9364&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 3 serious, 2 minor
- Status: Completed, report November 28, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 151098
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA76FYC17
- Page: https://openairdocs.org/ntsb/SEA76FYC17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3221   75/9/7    HILLSBORO,OR        GRUM AMER AA5       CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 35, 93 TOTAL
        TIME - 1810                    N9266L              PX-  0  2  2  PLEASURE/PERSONAL TRANSP  HOURS, 32 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - TWIN OAKS AIRPARK
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          VANCOUVER,WA                RETURN                       HILLSBORO,OR
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           OVERSHOOT                                                LANDING: LEVEL OFF/TOUCHDOWN
           COLLIDED WITH: TREES                                     LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND SPEED
           PILOT IN COMMAND - FAILED TO INITIATE GO-AROUND
        FACTOR(S)
           PILOT IN COMMAND - MISUSED OR FAILED TO USE FLAPS
           MISCELLANEOUS ACTS,CONDITIONS - RAN OFF END OF RUNWAY
           TERRAIN - ROUGH/UNEVEN
        REMARKS- T/D 700FT FM DEP END OF NORTH RWY.CONT ACROSS RAVINE INTO TREES.
```

## Aircraft

- Registration: [N9266L](https://openairdocs.org/deregistered/N9266L-1975-10-07), registration cancelled 1975-10-07, S/N AA5-0206 (OpenAirDocs)
- Reported make and model: GRUM AMER AA5
- Registry model: [American AA-5](https://openairdocs.org/model/american-aa-5) (registry code 0631410) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Twin Oaks Airpark

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19750907032159A](https://openairdocs.org/incident/19750907032159A), Sep 7, 1975: Grumav AA5, Hillsboro, OR, Substantial damage. T/d 700FT fm dep end of north rwy. Cont across ravine into trees.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.