# NTSB CHI82FCA01: Hughes 369HS, N9083F, Cahokia, IL, November 14, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 14, 1981
- Place: Cahokia, IL · CAHOKIA, IL
- Location: 38.5709° N, 90.1901° W: Placed by OpenAirDocs: center of Cahokia, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.5709&lon=-90.1901&mi=10
- Phase of flight: [Emergency descent](https://openairdocs.org/ntsb-phases/600) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 31, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 123388
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI82FCA01
- Page: https://openairdocs.org/ntsb/CHI82FCA01

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2751  81/11/14   CAHOKIA,IL          HUGHES 369HS        CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 51, 3842
        TIME - 1119                    N9083F              PX-  0  0  1  DEMONSTRATION             TOTAL HOURS, 362 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - BISTATE PARK
        DEPARTURE POINT             INTENDED DESTINATION
          CAHOKIA,IL                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             IN FLIGHT: AUTOROTATIVE DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
```

## Aircraft

- Registration: [N9083F](https://openairdocs.org/deregistered/N9083F-1989-11-08), registration cancelled 1989-11-08, S/N 1110354S (OpenAirDocs)
- Reported make and model: HUGHES 369HS
- Registry model: [Hughes 369HS](https://openairdocs.org/model/hughes-369hs) (registry code 4470728) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Bistate Park

## 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 19811114073799A](https://openairdocs.org/incident/19811114073799A), Nov 14, 1981: Hughes 369HS, Cahokia, IL, Substantial damage. Was demonstrating practice autorotation to prospective buyer. Allow rotor RPM decay. Hard landing chopped boom.

## Other investigations on N9083F (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 CHI81IA037](https://openairdocs.org/ntsb/CHI81IA037), Apr 21, 1981: Hughes 369HS (N9083F), Cahokia, IL, incident, minor 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.