# NTSB CHI77FEV06: Hughes 369C, N9135F, Pontiac, IL, December 11, 1976

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: December 11, 1976
- Place: Pontiac, IL · PONTIAC, IL
- Location: 40.8894° N, 88.6415° W: Placed by OpenAirDocs: center of Pontiac, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.8894&lon=-88.6415&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal, 1 serious
- Status: Completed, report November 16, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 157088
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77FEV06
- Page: https://openairdocs.org/ntsb/CHI77FEV06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4170  76/12/11 NR.PONTIAC,IL         HUGHES 369C         CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 51, 261
        TIME - 1425                    N9135F              PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 24 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         PONTIAC,IL                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: POWER-OFF AUTOROTATIVE LANDING
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - TURBINE ASSEMBLY: WHEEL TURBINE
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENG FAILED DRG PRACT AUTOROTATION.THERMAL FATIGUE,OUTER RIM.EVIDENCE OF PREVIOUS OIL FIRE.
```

## Aircraft

- Registration: N9135F (not matched to a registry record)
- Reported make and model: HUGHES 369C
- Category: Helicopter
- Engines: turbo jet
- 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 19761211040069A](https://openairdocs.org/incident/19761211040069A), Dec 11, 1976: Hughes 369HS, IL, Destroyed, 1 fatal

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.