# NTSB FTW77DRG48: Grumman G-164, N472Y, Port Lavaca, TX, April 25, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 25, 1977
- Place: Port Lavaca, TX · PORT LAVACA, TX
- Location: 28.6180° N, 96.6283° W: Placed by OpenAirDocs: center of Port Lavaca, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=28.6180&lon=-96.6283&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 1, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 152457
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW77DRG48
- Page: https://openairdocs.org/ntsb/FTW77DRG48

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0689  77/4/25    PORT LAVACA,TX      GRUMMAN G-164       CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 36, 4641
        TIME - 0930                    N472Y               PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 510 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - DUNCAN
        DEPARTURE POINT             INTENDED DESTINATION
          PORT LAVACA,TX              LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           MISCELLANEOUS ACTS,CONDITIONS - JAMMED
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        REMARKS- BOLT SHEARED
```

## Aircraft

- Registration: [N472Y](https://openairdocs.org/deregistered/N472Y-2020-01-06), registration cancelled 2020-01-06, S/N 117, built 1962 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164
- Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (OpenAirDocs)
- Registry engine: [Continental W670 series](https://openairdocs.org/engine/continental-w670-series) (registry code 17018, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Duncan

## 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 19770425009759A](https://openairdocs.org/incident/19770425009759A), Apr 25, 1977: Grumav G164, Port Lavaca, TX, Substantial damage. Bolt sheared

## Other investigations on N472Y (2)

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 FTW80DPA04](https://openairdocs.org/ntsb/FTW80DPA04), Dec 8, 1979: Grumman G-164 (N472Y), Lott, TX, substantial damage
- [NTSB UNK64X2713](https://openairdocs.org/ntsb/UNK64X2713), Jul 8, 1964: Grumman G164 (N472Y), Port Lavaca, TX, substantial 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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