# NTSB UNK64X2803: Grumman G21A, N4221A, Avalon, CA, July 13, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 13, 1964
- Place: Avalon, CA · AVALON, CA
- Location: 33.3440° N, 118.3214° W: Placed by OpenAirDocs: center of Avalon, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.3440&lon=-118.3214&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 10 uninjured
- Status: Completed, report October 13, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183028
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2803
- Page: https://openairdocs.org/ntsb/UNK64X2803

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2054  64/7/13    AVALON CALIF        GRUMMAN G21A        CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 47, 7600
        TIME - 0740                    N4221A              PX-  0  0  9  AIR TAXI-PASSG            TOTAL HOURS, 4100 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - PEBBLY BEACH SEA-
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE TEARAWAY                                          TAKEOFF: INITIAL CLIMB
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
```

## Aircraft

- Registration: [N4221A](https://openairdocs.org/deregistered/N4221A-1964-09-16), registration cancelled 1964-09-16, S/N 1030 (OpenAirDocs)
- Reported make and model: GRUMMAN G21A
- Registry model: [Grumman G-21A](https://openairdocs.org/model/grumman-g-21a) (registry code 3951204) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Pebbly Beach Sea-

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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