# NTSB UNK64X1555: Grumman G21, N329, Avalon Bay, CA, May 2, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 2, 1964
- Place: Avalon Bay, CA · AVALON BAY, CA
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 10 uninjured
- Status: Completed, report September 16, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183808
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1555
- Page: https://openairdocs.org/ntsb/UNK64X1555

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1129   64/5/2    AVALON BAY CALIF    GRUMMAN G21         CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1430                    N329                PX-  0  0  9  AIR TAXI-PASSG            39, 10000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            4500 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - AVALON BAY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER LEVEL OFF
           TERRAIN - ROUGH WATER
```

## Aircraft

- Registration: [N329](https://openairdocs.org/deregistered/N329-1976-08-16), registration cancelled 1976-08-16, S/N B119 (OpenAirDocs)
- Reported make and model: GRUMMAN G21
- Registry model: [Grumman G-21A](https://openairdocs.org/model/grumman-g-21a) (registry code 3951204) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Avalon Bay

## Other investigations on N329 (1)

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.

- [NTSB LAX70AL040](https://openairdocs.org/ntsb/LAX70AL040), Jan 10, 1970: Grumman G-21A (N329), Avalon, CA, minor damage

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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