# NTSB OAK64A0035: Sikorsky S-62A, N323Y, San Francisco, CA, October 29, 1963

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 29, 1963
- Place: San Francisco, CA · SAN FRANCISCO, CA
- Location: 37.7750° N, 122.4194° W: Placed by OpenAirDocs: center of San Francisco, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7750&lon=-122.4194&mi=10
- Phase of flight: [Emergency descent](https://openairdocs.org/ntsb-phases/600) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 23, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 111338
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK64A0035
- Page: https://openairdocs.org/ntsb/OAK64A0035

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0066  63/10/29   SAN FRANCISCO,CAL   SIKORSKY S-62A      CR-  0  0  2  TEST                      AIRLINE TRANSPORT, AGE
        TIME - 1155                    N323Y               PX-  0  0  0                            31, 5326 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1847 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SAN FRANCISCO
        OPERATOR - SAN FRANCISCO AND OAKLAND HELICOPTER AIRLINES
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: AUTOROTATIVE DESCENT
           GEAR COLLAPSED                                           LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           PILOT IN COMMAND - IMPROPER LEVEL OFF
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- ACFT LANDED TAIL LOW WHEN ENG DID NOT RESPOND IN TIME TO TERMINATE A TEST AUTOROTATIVE DESCENT.
```

## Aircraft

- Registration: [N323Y](https://openairdocs.org/deregistered/N323Y-1980-11-18), registration cancelled 1980-11-18, S/N 62014, built 1961 (OpenAirDocs)
- Reported make and model: SIKORSKY S-62A
- Registry model: [Sikorsky S62A](https://openairdocs.org/model/sikorsky-s62a) (registry code 8142202) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: San Francisco

## Other investigations on N323Y (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 OAK65A0064](https://openairdocs.org/ntsb/OAK65A0064), Apr 16, 1965: Sikorsky S62A (N323Y), Sanfrancsco, CA, destroyed

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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