# NTSB NYC68A0016: Hiller UH-12L, N90458, Allentown, PA, July 30, 1967

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 30, 1967
- Place: Allentown, PA · ALLENTOWN, PA
- Location: 40.5936° N, 75.4784° W: Placed by OpenAirDocs: center of Allentown, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.5936&lon=-75.4784&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report April 1, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 115971
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC68A0016
- Page: https://openairdocs.org/ntsb/NYC68A0016

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-1061  67/7/30    ALLENTOWN,PA        HILLER UH-12L       CR-  0  1  0  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 2000                    N90458              PX-  0  0  0  AIR TAXI-PASSG            32, 7388 TOTAL HOURS, 73
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - QUEEN CITY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      TAKEOFF: INITIAL CLIMB
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
          ROTORCFT-CLUTCH SLIPPAGE DUE GLAZED FRICTION SHOES
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- CLUTCH SLIPPAGE CAUSED LOSS OF PWR TO MAIN RTR.
```

## Aircraft

- Registration: N90458 (not matched to a registry record)
- Reported make and model: HILLER UH-12L
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Queen City

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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