# NTSB DEN75DTE01: Hiller Acft UH12L4, N9727C, Delores, CO, July 4, 1974

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 4, 1974
- Place: Delores, CO · DELORES, CO
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report August 2, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 128249
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN75DTE01
- Page: https://openairdocs.org/ntsb/DEN75DTE01

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1780   74/7/4    DELORES,COLO        HILLER ACFT UH12L4  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 33, 1876
        TIME - 0540                    N9727C              PX-  0  0  0  ASSOC FIRE CTL ACTIVITY   TOTAL HOURS, 300 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CORTEZ,COLO                 DELORES,COLO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - POORLY PLANNED APPROACH
           MISCELLANEOUS ACTS,CONDITIONS - SUNGLARE
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- APCH MADE INTO RISING SUN.WIRES PARTIALLY HIDDEN.SURVEYING FIRE AREA.
```

## 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: Substantial damage

## 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 19740704019219A](https://openairdocs.org/incident/19740704019219A), Jul 4, 1974: Hiller UH12L4, Delores, CO, Substantial damage. Apch made into rising sun. Wires partially hidden. Surveying fire area.

## 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 DEN76FTC02](https://openairdocs.org/ntsb/DEN76FTC02), Jul 11, 1975: Hiller Acft UH12L4 (N9727C), Wapiti, WY, 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.

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