# NTSB MKC78DA061: Sikorsky S-64, N4036S, Buffalo, MN, August 8, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 8, 1978
- Place: Buffalo, MN · BUFFALO, MN
- Location: 45.1795° N, 93.8640° W: Placed by OpenAirDocs: center of Buffalo, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.1795&lon=-93.8640&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 12, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 140082
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC78DA061
- Page: https://openairdocs.org/ntsb/MKC78DA061

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2414   78/8/8  NR.BUFFALO,MN         SIKORSKY S-64       CR-  0  0  2  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1600                    N4036S              PX-  0  0  0  CONSTRUCTION              AGE 53, 11500 TOTAL
                                       DAMAGE-NONE         OT-  0  0  0                            HOURS, 3500 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         BUFFALO,MN                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
          MISC-CLAMP SLIPPED CAUSING RIGGING TO HIT WORKMAN
        REMARKS- POSITIONING UPPER TRANSMISSION TWR TO BASE TWR.
```

## Aircraft

- Registration: [N4036S](https://openairdocs.org/deregistered/N4036S-1994-03-16), registration cancelled 1994-03-16, S/N 64100 (OpenAirDocs)
- Reported make and model: SIKORSKY S-64
- Registry model: [Sikorsky S-64E](https://openairdocs.org/model/sikorsky-s-64e) (registry code 8142604) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: No 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 19780808037649A](https://openairdocs.org/incident/19780808037649A), Aug 8, 1978: Amtr 81424, Buffalo, MN, 1 fatal. Positioning upper transmission twr to base twr. Misc-clamp slippeusing rigging to hit workman

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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