# NTSB CHI78FA002: Sikorsky S-58E, N99275, Flat Rock, MI, October 16, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 16, 1977
- Place: Flat Rock, MI · FLAT ROCK, MI
- Location: 42.0982° N, 83.2711° W: Placed by OpenAirDocs: center of Flat Rock, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.0982&lon=-83.2711&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 31, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 144329
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI78FA002
- Page: https://openairdocs.org/ntsb/CHI78FA002

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4254  77/10/16   FLAT ROCK,MI        SIKORSKY S-58E      CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 33, 7000
        TIME - 0845                    N99275              PX-  0  0  0  CONSTRUCTION              TOTAL HOURS, 4000 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          MONROE,MI                   FLAT ROCK,MI
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: HOVERING
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: PISTON,PISTON RINGS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - JETTISONED LOAD
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- EXTERNAL LIFT OPS.PISTON FAILED IN BOSS AREA.
```

## Aircraft

- Registration: [N99275](https://openairdocs.org/deregistered/N99275-2013-04-16), registration cancelled 2013-04-16, S/N 58-245, built 1958 (OpenAirDocs)
- Reported make and model: SIKORSKY S-58E
- Registry model: [Sikorsky S58E](https://openairdocs.org/model/sikorsky-s58e) (registry code 8141811) (OpenAirDocs)
- Registry engine: [Wright C9HE series](https://openairdocs.org/engine/wright-c9he-series) (registry code 67029, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

## 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 19771016043309A](https://openairdocs.org/incident/19771016043309A), Oct 16, 1977: Skrsky S58E, MI, Substantial 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.

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