# NTSB DEN76FTC02: Hiller Acft UH12L4, N9727C, Wapiti, WY, July 11, 1975

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 11, 1975
- Place: Wapiti, WY · WAPITI, WY
- Location: 44.4686° N, 109.4377° W: Placed by OpenAirDocs: center of Wapiti, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.4686&lon=-109.4377&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report July 24, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 149591
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN76FTC02
- Page: https://openairdocs.org/ntsb/DEN76FTC02

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1632  75/7/11  NR.WAPITI,WY          HILLER ACFT UH12L4  CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1555                    N9727C              PX-  0  0  0  CTR CARGO-D               AGE 42, 7329 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            2500 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
         WAPITI,WY                    RETURN                       TROUT PEAK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  TAKEOFF: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY LOADED AIRCRAFT-WEIGHT-AND/OR C.G.
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      48
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         FIRE AFTER IMPACT
        REMARKS- SETTLED WITH PWR INTO SLING LOAD ON 3RD ATTMPT TO LIFT LOAD. DENSITY ALT 14700FT.
```

## Aircraft

- Registration: [N9727C](https://openairdocs.org/deregistered/N9727C-1975-08-07), registration cancelled 1975-08-07, S/N 2506 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH12L4
- Registry model: [Hiller UH-12L4](https://openairdocs.org/model/hiller-uh-12l4) (registry code 4360128) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

## 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 19750711017179A](https://openairdocs.org/incident/19750711017179A), Jul 11, 1975: Hiller UH12L4, Wapiti, WY, Destroyed. Settled with pwr into sling load on 3rd attmpt to lift load. Density alt 14700FT.

## Other investigations on N9727C (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 DEN75DTE01](https://openairdocs.org/ntsb/DEN75DTE01), Jul 4, 1974: Hiller Acft UH12L4 (N9727C), Delores, CO, 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.

---
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.