# NTSB OAK72DVD49: Hughes 300C, N9628F, Oakland, CA, May 31, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 31, 1972
- Place: Oakland, CA · OAKLAND, CA
- Location: 37.8044° N, 122.2708° W: Placed by OpenAirDocs: center of Oakland, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.8044&lon=-122.2708&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 20, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 166917
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK72DVD49
- Page: https://openairdocs.org/ntsb/OAK72DVD49

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2069  72/5/31    OAKLAND,CALIF       HUGHES 300C         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 33, 1181
        TIME - 1210                    N9628F              PX-  0  0  1  PARAJUMP-SPORT            TOTAL HOURS, 964 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT -  OAKLAND
        DEPARTURE POINT             INTENDED DESTINATION
          OAKLAND,CALIF               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/JET/ROTOR BLAST                                STATIC: STARTING ENGINE(S)
        PROBABLE CAUSE(S)
           MISCELLANEOUS - PROP/JET/ROTOR BLAST
           MISCELLANEOUS ACTS,CONDITIONS - CONGESTED RAMP/TAXIWAY
        REMARKS- DOWNWASH FROM NEAR LARGE HELICOPTER CAUSED MAIN ROTOR BLADE FLEX DOWN AND STRIKE TAIL BOOM
```

## Aircraft

- Registration: [N9628F](https://openairdocs.org/deregistered/N9628F-1974-04-24), registration cancelled 1974-04-24, S/N 900037, built 1970 (OpenAirDocs)
- Reported make and model: HUGHES 300C
- Registry model: [Hughes 269C](https://openairdocs.org/model/hughes-269c) (registry code 4470504) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport:  Oakland

## Other investigations on N9628F (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 OAK74AP015](https://openairdocs.org/ntsb/OAK74AP015), Oct 2, 1973: Hughes 269C (N9628F), Oakland, CA, destroyed, 2 fatal

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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