# NTSB CHI79FEE66: Bowers DSA1, N9228A, Princeton, IL, June 26, 1979

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 26, 1979
- Place: Princeton, IL · PRINCETON, IL
- Location: 41.3805° N, 89.4641° W: Placed by OpenAirDocs: center of Princeton, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.3805&lon=-89.4641&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report October 30, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 135403
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI79FEE66
- Page: https://openairdocs.org/ntsb/CHI79FEE66

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2247  79/6/26    PRINCETON,IL        BOWERS DSA1         CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 27, 241
        TIME - 1925                    N9228A              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 17 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PRINCETON-PIPER
        DEPARTURE POINT             INTENDED DESTINATION
          BRADFORD,IL                 PRINCETON,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           NOSE OVER/DOWN                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - ENGINE STRUCTURE: CRANKSHAFT
           MISCELLANEOUS ACTS,CONDITIONS - UNAPPROVED MODIFICATION
           MISCELLANEOUS ACTS,CONDITIONS - POOR WELD
        FACTOR(S)
           TERRAIN - HIGH VEGETATION
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FABRICATED ADAPTER WASHER WELD FAILED CAUSING CRANKSHAFT GEAR,P/N R-326,TO SEPARATE FM CRANKSHAFT.
```

## Aircraft

- Registration: [N9228A](https://openairdocs.org/deregistered/N9228A-1982-09-23), registration cancelled 1982-09-23, S/N 91676 (OpenAirDocs)
- Reported make and model: BOWERS DSA1
- Registry model: [Bowers-Robert SMITH MINIPLANE DSA1](https://openairdocs.org/model/bowers-robert-smith-miniplane-dsa1) (registry code 8350233) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Princeton-Piper

## 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 19790626026319A](https://openairdocs.org/incident/19790626026319A), Jun 26, 1979: Amtrsm DSA1, Princeton, IL, Substantial damage. Engine quit during approach to airport. Landed in field, flipped over. Found broken bogus crankshaft gear.

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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