# NTSB LAX70A0004: Sikorsky S-61L, N304V, Chino, CA, July 13, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 13, 1969
- Place: Chino, CA · CHINO, CA
- Location: 33.9763° N, 117.6745° W: Placed by OpenAirDocs: center of Chino, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.9763&lon=-117.6745&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 21 uninjured
- Status: Completed, report August 20, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 173489
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX70A0004
- Page: https://openairdocs.org/ntsb/LAX70A0004

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0013  69/7/13    CHINO,CALIF         SIKORSKY S-61L      CR-  0  0  3  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 0843                    N304V               PX-  0  0 18                            39, 8132 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            3000 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - ONTARIO INTL
        OPERATOR - LOS ANGELES AIRWAYS,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          SAN BERNADINO,CALIF         LOS ANGELES, CALIF           RIVERSIDE,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - ROTOR ASSEMBLIES: TAIL ROTOR BLADES
           MISCELLANEOUS - FOREIGN OBJECT DAMAGE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
           MISCELLANEOUS ACTS,CONDITIONS - LOOSE,PART/FITTING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
        REMARKS- L HALF LOWER PYLON FAIRING SEPARATED,DAMAGED T/R BLADES.5 MOUNTING SCREWS MISSING FROM LOCK NUTS.
```

## Aircraft

- Registration: N304V (not matched to a registry record)
- Reported make and model: SIKORSKY S-61L
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Ontario Intl

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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