# NTSB SEA74DYC33: Amer Avco AA-1A, N9343L, Lagrande, OR, February 28, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 28, 1974
- Place: Lagrande, OR · LAGRANDE, OR
- Location: 45.3240° N, 118.0855° W: Placed by OpenAirDocs: center of La Grande, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.3240&lon=-118.0855&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report May 8, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 170229
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA74DYC33
- Page: https://openairdocs.org/ntsb/SEA74DYC33

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0732  74/2/28  NR.LAGRANDE,OREG      AMER AVCO AA-1A     CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 25, 148
        TIME - 1530                    N9343L              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 55 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BAKER,OREG                  VANCOUVER,WASH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: OBJECT                                    LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
           MISCELLANEOUS ACTS,CONDITIONS - ANTI-ICING/DEICING EQUIPMENT-IMPROPER OPERATION OF/OR FAILED TO USE
        FACTOR(S)
           TERRAIN - SNOW-COVERED
           WEATHER - CONDITIONS CONDUCIVE TO CARB./INDUCTION SYSTEM ICING
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                      2500
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      40
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
           90                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      VFR
        REMARKS- NOSEWHEEL STRUCK ROCK.
```

## Aircraft

- Registration: [N9343L](https://openairdocs.org/aircraft/N9343L), registered now, S/N AA1A-0043 (OpenAirDocs)
- Reported make and model: AMER AVCO AA-1A
- Registry model: [American AA-1A](https://openairdocs.org/model/american-aa-1a) (registry code 0630710) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19740228006599A](https://openairdocs.org/incident/19740228006599A), Feb 28, 1974: Grumav AA1A, Lagrande, OR, Substantial damage. Nosewheel struck rock.

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.

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