# NTSB MIA71AM085: Sikorsky S-52-3, N9683C, N.Miami Beach, FL, March 28, 1971

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: March 28, 1971
- Place: N.Miami Beach, FL · N.MIAMI BEACH, FL
- Location: 25.9300° N, 80.1652° W: Placed by OpenAirDocs: center of North Miami Beach, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.9300&lon=-80.1652&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 3 minor
- Status: Completed, report September 30, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 132956
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA71AM085
- Page: https://openairdocs.org/ntsb/MIA71AM085

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0094  71/3/28    N.MIAMI BEACH,FLA   SIKORSKY S-52-3     CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 49, 15000
        TIME - 1045                    N9683C              PX-  0  0  2  FERRY                     TOTAL HOURS, 530 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PRIVATE HELIPORT
        DEPARTURE POINT             INTENDED DESTINATION
          PLTS RESIDENCE              HELIPORT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR ACCIDENT TO PERSON                       STATIC: IDLING ROTORS
           MISCELLANEOUS                                            STATIC: IDLING ROTORS
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - GROUND RESONANCE
        FACTOR(S)
           PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: INADEQUATE SUPERVISION/TRAINING OF RAMP CREWS
        REMARKS- WHEEL EQPD.GND ATNDNT APCHD PKD HEL,WAS HIT BY MAIN ROTOR BLADES.HEL THEN WENT INTO GND RESONANCE.
```

## Aircraft

- Registration: N9683C (not matched to a registry record)
- Reported make and model: SIKORSKY S-52-3
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Private Heliport

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.