# NTSB CHI81IA037: Hughes 369HS, N9083F, Cahokia, IL, April 21, 1981

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: April 21, 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: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 23, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 125398
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI81IA037
- Page: https://openairdocs.org/ntsb/CHI81IA037

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0017  81/4/21    CAHOKIA,IL          HUGHES 369HS        CR-  0  0  1  NONCOMMERCIAL             STUDENT, AGE 31, 202
        TIME - 1158                    N9083F              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 172 IN TYPE,
                                       DAMAGE-MINOR        OT-  0  0  0                            NOT INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - BI-STATE
        DEPARTURE POINT             INTENDED DESTINATION
          CAHOKIA,IL                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           FIRE OR EXPLOSION: IN FLIGHT                             TAXI: AERIAL TAXI TO TAKEOFF
        PROBABLE CAUSE(S)
           POWERPLANT - LUBRICATING SYSTEM: FILTER,OIL
           MISCELLANEOUS ACTS,CONDITIONS - STRIPPED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- STUD,AN150526,HOLDING CAP TO OIL FILTER FAILED.OIL LEAKED ONTO L EXH STACK.
```

## 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 jet
- Damage: Minor damage
- Airport: Bi-State

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19810421023309I](https://openairdocs.org/incident/19810421023309I), Apr 21, 1981: Hughes 369HS, Cahokia, IL, Minor damage. Smoke was observed coming from helicopter and pilot was advised to land. Oil filter bolt was stripped.

## 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 CHI82FCA01](https://openairdocs.org/ntsb/CHI82FCA01), Nov 14, 1981: Hughes 369HS (N9083F), Cahokia, IL, 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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