# NTSB MIA78FA109: Sikorsky S76A, N763SA, W Palm Beach, FL, July 28, 1978

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 28, 1978
- Place: W Palm Beach, FL · W PALM BEACH, FL
- Location: 26.7153° N, 80.0534° W: Placed by OpenAirDocs: center of West Palm Beach, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=26.7153&lon=-80.0534&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor, 1 uninjured
- Status: Completed, report November 17, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 140229
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA78FA109
- Page: https://openairdocs.org/ntsb/MIA78FA109

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2896  78/7/28  NR.W PALM BEACH,FL    SIKORSKY S76A       CR-  0  1  2  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 0713                    N763SA              PX-  0  0  0  TEST                      AGE 52, 5945 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            172 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SIKORSKY FLIGHT
        DEPARTURE POINT             INTENDED DESTINATION
         W PALM BEACH,FL              LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: MAIN ROTOR GEAR BOX
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        REMARKS- FATIGUE FAILURE OCCURRED IN QUILL SHAFT P/N X7606-46420-041.
```

## Aircraft

- Registration: [N763SA](https://openairdocs.org/deregistered/N763SA-2001-12-10), registration cancelled 2001-12-10, S/N 76003, built 1976 (OpenAirDocs)
- Reported make and model: SIKORSKY S76A
- Registry model: [Sikorsky S-76A](https://openairdocs.org/model/sikorsky-s-76a) (registry code 8143006) (OpenAirDocs)
- Registry engine: [Allison 250 SER 400HP](https://openairdocs.org/engine/allison-250-ser-400hp) (registry code 03013, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Sikorsky Flight

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19780728034399A](https://openairdocs.org/incident/19780728034399A), Jul 28, 1978: Skrsky S76, W Palm Beach, FL, Substantial damage. Fatigue failure occurred in quill shaft p/n X7606-46420-041.

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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