# NTSB ANC72DAG11: Hiller 12-E4, N9759C, Chitina, AK, July 20, 1971

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 20, 1971
- Place: Chitina, AK · CHITINA, AK
- Location: 61.5158° N, 144.4369° W: Placed by OpenAirDocs: center of Chitina, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=61.5158&lon=-144.4369&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 March 7, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 162505
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC72DAG11
- Page: https://openairdocs.org/ntsb/ANC72DAG11

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2575  71/7/20    CHITINA,ALAS        HILLER 12-E4        CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 28, 2100
        TIME - 1037                    N9759C              PX-  0  0  0  AIR TAXI-PASSG            TOTAL HOURS, 230 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          LONG LAKE,ALAS              CRYSTAL CREEK,ALAS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: TREES                                     LANDING: OTHER
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NR 1,3,CON ROD CAPS CAME OFF,BOLTS FAILED,ENG QUIT.PLT CRASH LNDD ACFT IN TREES.
```

## Aircraft

- Registration: [N9759C](https://openairdocs.org/deregistered/N9759C-2013-05-30), registration cancelled 2013-05-30, S/N 2161, built 1962 (OpenAirDocs)
- Reported make and model: HILLER 12-E4
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N9759C (2)

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 CHI78FEK27](https://openairdocs.org/ntsb/CHI78FEK27), Aug 25, 1978: Hiller UH12E (N9759C), Findlay, OH, substantial damage
- [NTSB OAK67A0011](https://openairdocs.org/ntsb/OAK67A0011), Jul 20, 1966: Hiller UH-12E (N9759C), Kahului, HI, 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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