# NTSB FTW75DRD18: Sikorsky S-55, N750A, Gulf Of Mexico (Gulf of Mexico), December 2, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 2, 1974
- Place: Gulf Of Mexico (Gulf of Mexico) · GULF OF MEXICO, GM
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report December 23, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 143070
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW75DRD18
- Page: https://openairdocs.org/ntsb/FTW75DRD18

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3691   74/12/2   GULF OF MEXICO      SIKORSKY S-55       CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 34, 4567
        TIME - 1605                    N750A               PX-  0  0  5  CORP/EXEC                 TOTAL HOURS, 210 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          144A MAIN PASS              299C MAIN PASS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           DITCHING                                                 LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CYLINDER ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH WATER
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER
        REMARKS- NR 5 ENG CYLNDR EXHST RKR BX CRCKD.EMERG LNDG MADE ON BCKSD OF WAVE IN 8 TO 10 FT SEA.FLOAT EQUIP.
```

## Aircraft

- Registration: [N750A](https://openairdocs.org/deregistered/N750A-1977-07-18), registration cancelled 1977-07-18, S/N 55939 (OpenAirDocs)
- Reported make and model: SIKORSKY S-55
- Registry model: [Sikorsky S-55](https://openairdocs.org/model/sikorsky-s-55) (registry code 8141602) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## 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 19741202038319A](https://openairdocs.org/incident/19741202038319A), Dec 2, 1974: Skrsky S55, Gulf Of Mexico, LA, Substantial damage. Nr 5 eng cylndr exhst rkr bx crckd. Emerg lndg made on bcksd of wave in 8 to 10 ft sea. Float equip.

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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