# NTSB OAK73AP043: Amer Avco AA1-B, N9507L, Fairfield, CA, June 4, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 4, 1973
- Place: Fairfield, CA · FAIRFIELD, CA
- Location: 38.2494° N, 122.0400° W: Placed by OpenAirDocs: center of Fairfield, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.2494&lon=-122.0400&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal, 1 serious
- Status: Completed, report September 4, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190074
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK73AP043
- Page: https://openairdocs.org/ntsb/OAK73AP043

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1865   73/6/4    FAIRFIELD,CALIF     AMER AVCO AA1-B     CR-  1  1  0  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1330                    N9507L              PX-  0  0  0  DUAL                      AGE 57, 2244 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            126 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SAN RAFAEL,CALIF            VACAVILLE,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: SPIN                                              IN FLIGHT: ACROBATICS
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        REMARKS- ACFT PLACARDED-SPINS PROHIBITED.PLT FAILED TO USE ESTABD SPIN RECOVERY TECHNIQUE.
```

## Aircraft

- Registration: [N9507L](https://openairdocs.org/deregistered/N9507L-1974-04-24), registration cancelled 1974-04-24, S/N AA1B-0019, built 1972 (OpenAirDocs)
- Reported make and model: AMER AVCO AA1-B
- Registry model: [American AA-1B](https://openairdocs.org/model/american-aa-1b) (registry code 0630820) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19730604016499A](https://openairdocs.org/incident/19730604016499A), Jun 4, 1973: Grumav AA1B, Fairfield, CA, Destroyed. Acft placarded-spins prohibited. Plt failed to use estabd spin recovery technique.

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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