# NTSB LAX73AL048: Grumman G-21A, N1133, Avalon, CA, April 5, 1973

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 5, 1973
- 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: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 6 uninjured
- Status: Completed, report May 1, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 163187
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX73AL048
- Page: https://openairdocs.org/ntsb/LAX73AL048

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0514   73/4/5  NR.AVALON,CALIF       GRUMMAN G-21A       CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 0933                    N1133               PX-  0  0  6  COMMUTER AIR CARRIER      40, 7084 TOTAL HOURS, 128
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0  AIR TAXI-PASSG S-D        IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - TWO HARBORS
        DEPARTURE POINT             INTENDED DESTINATION
          LONG BEACH,CALIF           AVALON,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: DIRT BANK                                 LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
        WEATHER BRIEFING - BRIEFING RECEIVED-METHOD UNKNOWN
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     LEFT CROSS WIND 248-292 DEGREES
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- UNEXPECTED GUST FROM L. R FLOAT DUG INTO WATER,ACFT VEERED INTO ROCKY BANK.
```

## Aircraft

- Registration: N1133 (not matched to a registry record)
- Reported make and model: GRUMMAN G-21A
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Two Harbors

## 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 19730405008419A](https://openairdocs.org/incident/19730405008419A), Apr 5, 1973: Gruman G21A, Avalon, CA, Substantial damage. Unexpected gust from l. r float dug into water,acft veered into rocky bank.

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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