# NTSB NYC72FNA14: Sikorsky S-55, N9009R, Acton, MA, October 15, 1971

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: October 15, 1971
- Place: Acton, MA · ACTON, MA
- Location: 42.4851° N, 71.4328° W: Placed by OpenAirDocs: center of Acton, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.4851&lon=-71.4328&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report April 12, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 163382
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC72FNA14
- Page: https://openairdocs.org/ntsb/NYC72FNA14

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3291  71/10/15   ACTON,MASS          SIKORSKY S-55       CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1528                    N9009R              PX-  0  1  0  AERIAL SURVEY             AGE 33, 3388 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            34 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BEDFORD,MASS                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - OTHER
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         FIRE AFTER IMPACT
        REMARKS- CON ROD FAILED,ACFT DSTRYD BY IMPACT AND FIRE.ALT TOO LOW FOR PRPR RCVRY.OVER POPULATED AREA.
```

## Aircraft

- Registration: [N9009R](https://openairdocs.org/deregistered/N9009R-1972-11-14), registration cancelled 1972-11-14, S/N 55068 (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: Destroyed

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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