# NTSB CHI77FEV33: Hughes 369C, N9153F, Mackinaw, IL, July 8, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 8, 1977
- Place: Mackinaw, IL · MACKINAW, IL
- Location: 40.5339° N, 89.3555° W: Placed by OpenAirDocs: center of Mackinaw, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.5339&lon=-89.3555&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 16, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 146265
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77FEV33
- Page: https://openairdocs.org/ntsb/CHI77FEV33

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2215   77/7/8  NR.MACKINAW,IL        HUGHES 369C         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1815                    N9153F              PX-  0  0  0  AERIAL APPLICATION        AGE 28, 3125 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            500 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         MACKINAW,IL                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - COMPRESSOR ASSEMBLY: CASTING
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - ROUGH/UNEVEN
        FACTOR(S)
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - MISCELLANEOUS EQUIPMENT: SPRAY,DUSTING EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN ENGINE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  300                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - CORN                                      TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE-NOT USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - AFT OF PILOT                      TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  600                 SWATH RUN-HOW FLOWN - CROSSWIND
         FIRE AFTER IMPACT
        REMARKS- STATOR CASE P/N 6871300 FAILED.SPRAY GEAR ARMS LIMITED MANEUVERABILITY FOR SAFE AUTOROTATION.
```

## Aircraft

- Registration: [N9153F](https://openairdocs.org/deregistered/N9153F-1983-11-23), registration cancelled 1983-11-23, S/N 930513S (OpenAirDocs)
- Reported make and model: HUGHES 369C
- Registry model: [Hughes 369HS](https://openairdocs.org/model/hughes-369hs) (registry code 4470728) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- 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 19770708023199A](https://openairdocs.org/incident/19770708023199A), Jul 8, 1977: Hughes 369HS, Mackinaw, IL, Substantial damage. Stator case p/n 6871300 failed. Spray gear arms limited maneuverability for safe autorotation.

## Other investigations on N9153F (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 DEN81FA001](https://openairdocs.org/ntsb/DEN81FA001), Oct 4, 1980: Hughes 369HS (N9153F), Silverton, CO, substantial damage, 3 fatal
- [NTSB MKC76DCQ51](https://openairdocs.org/ntsb/MKC76DCQ51), May 18, 1976: Hughes 369 (N9153F), Elkhart, KS, 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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