# NTSB SEA76FYE21: Amer Avco AA1-B, N9687L, Oak Harbor, WA, November 8, 1975

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: November 8, 1975
- Place: Oak Harbor, WA · OAK HARBOR, WA
- Location: 48.2938° N, 122.6282° W: Placed by OpenAirDocs: center of Oak Harbor, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=48.2938&lon=-122.6282&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report December 18, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 151859
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA76FYE21
- Page: https://openairdocs.org/ntsb/SEA76FYE21-151859

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3423   75/11/8   OAK HARBOR,WA       AMER AVCO AA1-B     CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 48, 255
        TIME - 1918                    N9687L              PX-  0  1  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 42 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          ROCHE HARBOR,WA             OAK HARBOR,WA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: TREES                                     LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           MISCELLANEOUS ACTS,CONDITIONS - ANTI-ICING/DEICING EQUIPMENT-IMPROPER OPERATION OF/OR FAILED TO USE
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
           TERRAIN - HIGH OBSTRUCTIONS
        FACTOR(S)
           WEATHER - CONDITIONS CONDUCIVE TO CARB./INDUCTION SYSTEM ICING
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-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
          BROKEN                                                    1400
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                      SNOW, FREEZING RAIN
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          UNKNOWN/NOT REPORTED                                      42
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          180                                                       7
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- FLT THROUGH SNOW SHOWERS.ONLY PARTIAL APPLICATION OF CARB HEAT AFTER PWR LOSS.
```

## Aircraft

- Registration: [N9687L](https://openairdocs.org/deregistered/N9687L-2013-03-21), registration cancelled 2013-03-21, S/N AA1B-0187, built 1973 (OpenAirDocs)
- Reported make and model: AMER AVCO AA1-B
- Registry model: [Grumman American Avn. AA-1B](https://openairdocs.org/model/grumman-american-avn-aa-1b) (registry code 3960103) (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 19751108037349A](https://openairdocs.org/incident/19751108037349A), Nov 8, 1975: Grumav AA1B, Oak Harbor, WA, Substantial damage. Flt through snow showers. Only partial application of carb heat after pwr loss.

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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