# NTSB MIA66A0144: Sikorsky S-52-3, N9426H, Coconut Grove, FL, June 11, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 11, 1966
- Place: Coconut Grove, FL · COCONUT GROVE, FL
- Location: 25.7126° N, 80.2570° W: Placed by OpenAirDocs: center of Coconut Grove, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.7126&lon=-80.2570&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report November 17, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 171527
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA66A0144
- Page: https://openairdocs.org/ntsb/MIA66A0144

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0392  66/6/11    COCONUT GROVE FLA   SIKORSKY S-52-3     CR-  0  1  0  MISCELLANEOUS             COMMERCIAL, AGE 36, 2458
        TIME - 1215                    N9426H              PX-  0  1  0  FERRY                     TOTAL HOURS, 25 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - INATTENTIVE TO FUEL SUPPLY
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
        FACTOR(S)
           POWERPLANT - POWERPLANT-INSTRUMENTS: OTHER
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- PILOT KNEW FUEL WARNING LIGHT WAS INOPERATIVE-FUEL GAUGE OK.PRIVATE LAWN AND TREES WERE DAMAGED.
```

## Aircraft

- Registration: [N9426H](https://openairdocs.org/deregistered/N9426H-2013-09-19), registration cancelled 2013-09-19, S/N 52085, built 1961 (OpenAirDocs)
- Reported make and model: SIKORSKY S-52-3
- Registry model: [Sikorsky S-52-3](https://openairdocs.org/model/sikorsky-s-52-3) (registry code 8141306) (OpenAirDocs)
- Registry engine: [Franklin 6V6 series](https://openairdocs.org/engine/franklin-6v6-series) (registry code 27036, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N9426H (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 UNK65X0927](https://openairdocs.org/ntsb/UNK65X0927), Dec 5, 1964: Sikorsky S52 (N9426H), Brandon, FL, no damage

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.