# NTSB NYC76FHA46: Enstrom F-28A, N9589, Collegeville, PA, July 20, 1976

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 20, 1976
- Place: Collegeville, PA · COLLEGEVILLE, PA
- Location: 40.1869° N, 75.4575° W: Placed by OpenAirDocs: center of Collegeville, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.1869&lon=-75.4575&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report October 1, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 154672
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC76FHA46
- Page: https://openairdocs.org/ntsb/NYC76FHA46

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2497  76/7/20    COLLEGEVILLE,PA     ENSTROM F-28A       CR-  0  1  0  MISCELLANEOUS             PRIVATE, AGE UNK/NR, 650
        TIME - 1600                    N9589               PX-  0  0  0  TEST                      TOTAL HOURS, 35 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PERKIOMEN
        DEPARTURE POINT             INTENDED DESTINATION
          COLLEGEVILLE,PA             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              TAXI: AERIAL TAXI, OTHER
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR HEAD ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- ROTOR HUB FAILED ON TEST FLT ALONG RWY.
```

## Aircraft

- Registration: [N9589](https://openairdocs.org/deregistered/N9589-1980-06-20), registration cancelled 1980-06-20, S/N 110 (OpenAirDocs)
- Reported make and model: ENSTROM F-28A
- Registry model: [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a) (registry code 3300406) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Perkiomen

## 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 19760720025729A](https://openairdocs.org/incident/19760720025729A), Jul 20, 1976: Enstrm F28A, Collegeville, PA, Substantial damage. Rotor hub failed on test flt along rwy.

## Other investigations on N9589 (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 NYC73DHD34](https://openairdocs.org/ntsb/NYC73DHD34), Apr 29, 1973: Enstrom F-28A (N9589), Centr Square, PA, 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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