# NTSB DEN66A0041: Hiller UH12L4, N9780C, Albuquerque, NM, December 6, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 6, 1965
- Place: Albuquerque, NM · ALBUQUERQUE, NM
- Location: 35.0845° N, 106.6511° W: Placed by OpenAirDocs: center of Albuquerque, NM, within about 8 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.0845&lon=-106.6511&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 22, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 174992
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN66A0041
- Page: https://openairdocs.org/ntsb/DEN66A0041

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-1003   65/12/6 NR.ALBUQUERQUE,N.MEX  HILLER UH12L4       CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0820                    N9780C              PX-  0  0  0  AIR TAXI-PASSG            AGE 32, 915 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            280 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           MISCELLANEOUS - FOREIGN OBJECT DAMAGE
        REMARKS- IMPROPERLY SECURED CABIN DOOR CAME OPEN AND UNSECURED PILOT COVERALLS BLEW OUT INTO TAIL ROTOR
```

## Aircraft

- Registration: [N9780C](https://openairdocs.org/deregistered/N9780C-2013-05-30), registration cancelled 2013-05-30, S/N 2500, built 1964 (OpenAirDocs)
- Reported make and model: HILLER UH12L4
- Registry model: [Hiller UH-12L](https://openairdocs.org/model/hiller-uh-12l) (registry code 4360126) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N9780C (3)

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 LAX68A0080](https://openairdocs.org/ntsb/LAX68A0080), Feb 27, 1968: Hiller UN-12L (N9780C), Windna, AZ, substantial damage
- [NTSB FTW67A0056](https://openairdocs.org/ntsb/FTW67A0056), Nov 19, 1966: Hiller UH-12L (N9780C), Woodville, TX, substantial damage
- [NTSB DEN66A0049](https://openairdocs.org/ntsb/DEN66A0049), Dec 18, 1965: Hiller UH12L4 (N9780C), Albuquerque, NM, 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.

---
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.