# NTSB CHI76FEE16: Grum Amer G-164A, N8792H, Harvard, IL, August 29, 1975

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 29, 1975
- Place: Harvard, IL · HARVARD, IL
- Location: 42.4296° N, 88.6211° W: Placed by OpenAirDocs: center of Harvard, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.4296&lon=-88.6211&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report May 12, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 151936
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI76FEE16
- Page: https://openairdocs.org/ntsb/CHI76FEE16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4143  75/8/29    HARVARD,IL          GRUM AMER G-164A    CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 37, 4000
        TIME - 1715                    N8792H              PX-  0  0  0  TEST                      TOTAL HOURS, 2000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - AHRENS FARM
        DEPARTURE POINT             INTENDED DESTINATION
          HARVARD,IL                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: OTHER
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           POWERPLANT - ENGINE STRUCTURE: BLOWER,IMPELLER ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
           TERRAIN - WET,SOFT GROUND
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LOAD NOT JETTISONED
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- OIL SUPPLY HOLE FOR BEARING FLANGE NOT DRILLED THRU BEARING.MFG SVC BULLETIN CVRS.
```

## Aircraft

- Registration: [N8792H](https://openairdocs.org/deregistered/N8792H-1991-10-03), registration cancelled 1991-10-03, S/N 1530 (OpenAirDocs)
- Reported make and model: GRUM AMER G-164A
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Ahrens Farm

## 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 19750829033509A](https://openairdocs.org/incident/19750829033509A), Aug 29, 1975: Gulstm G164C, Harvard, IL, Substantial damage. Oil supply hole for bearing flange not drilled thru bearing. Mfg svc bulletin cvrs.

## Other investigations on N8792H (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 SEA91LA105](https://openairdocs.org/ntsb/SEA91LA105), May 14, 1991: Grumman G-164A (N8792H), Lapwai, ID, destroyed. Probable cause: THE PILOT'S MISJUDGMENT OF AN AERIAL APPLICATION SWATH RUN. FACTORS INCLUDE A DOWNDRAFT CONDITION AND SOFT TERRAIN.
- [NTSB SEA89LA059](https://openairdocs.org/ntsb/SEA89LA059), Mar 25, 1989: Grumman-Schweizer G-164A (N8792H), Rosalia, WA, substantial damage. Probable cause: A LOSS OF ENGINE POWER DUE TO A SUPERCHARGER FAILURE. CONTRIBUTING TO THE ACCIDENT WAS THE SOFT TERRAIN ON WHICH THE FORCED LANDING WAS MADE.

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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