# NTSB OAK66A0055: Grumman F7F, N7628C, Grass Valley, CA, June 7, 1966

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: June 7, 1966
- Place: Grass Valley, CA · GRASS VALLEY, CA
- Location: 39.2203° N, 121.0527° W: Placed by OpenAirDocs: center of Grass Valley, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2203&lon=-121.0527&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report January 25, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 171558
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK66A0055
- Page: https://openairdocs.org/ntsb/OAK66A0055

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0475   66/6/7    GRASS VALLEY CALI   GRUMMAN F7F         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 46, 9058
        TIME - 1430                    N7628C              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 1 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - LOMA RICA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO EXTEND LANDING GEAR
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - CHECKLIST-FAILED TO USE
        REMARKS- PLT CONCERNED WITH FLAP PROBLEM.GRND CONT.ADVISED GEAR WAS UP BUT ACFT RADIO NOT ON COMPANY FREQ.
```

## Aircraft

- Registration: [N7628C](https://openairdocs.org/deregistered/N7628C-2012-08-14), registration cancelled 2012-08-14, S/N 80412, built 1958 (OpenAirDocs)
- Reported make and model: GRUMMAN F7F
- Registry model: [Grumman F7F-3](https://openairdocs.org/model/grumman-f7f-3) (registry code 3950704) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Loma Rica

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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