# NTSB OAK72FVM18: Dehavilland DH104, N6307T, San Carlos, CA, December 27, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 27, 1971
- Place: San Carlos, CA · SAN CARLOS, CA
- Location: 37.4990° N, 122.2676° W: Placed by OpenAirDocs: center of San Carlos, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.4990&lon=-122.2676&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report May 11, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 164385
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK72FVM18
- Page: https://openairdocs.org/ntsb/OAK72FVM18

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3728  71/12/27   SAN CARLOS,CALIF    DEHAVILLAND DH104   CR-  0  0  1  COMMERCIAL                ATP,FLIGHT INSTR., AGE
        TIME - 2148                    N6307T              PX-  0  0  0  AIR TAXI-CARGO            37, 5270 TOTAL HOURS, 580
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SAN CARLOS
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          OAKLAND,CALIF               LOS ANGELES,CALIF            SAN CARLOS,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
        REMARKS- L GR DOWN LOCK LIMIT SWITCH BOX CAME LOOSE.DMGD HYD ACTUATING CYL. GR IND SHOWED 3 GREEN.
```

## Aircraft

- Registration: [N6307T](https://openairdocs.org/deregistered/N6307T-2013-08-05), registration cancelled 2013-08-05, S/N 04281, built 1963 (OpenAirDocs)
- Reported make and model: DEHAVILLAND DH104
- Registry model: [Dehavilland DH104 DOVE 6A](https://openairdocs.org/model/dehavilland-dh104-dove-6a) (registry code 2800410) (OpenAirDocs)
- Registry engine: [Dehav ENG GQ-70MK2](https://openairdocs.org/engine/dehav-eng-gq-70mk2) (registry code 20007, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: San Carlos

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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