# NTSB CHI74FEC39: Smith EOS-1, N10AE, Pontiac, MI, April 25, 1974

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 25, 1974
- Place: Pontiac, MI · PONTIAC, MI
- Location: 42.6492° N, 83.2874° W: Placed by OpenAirDocs: center of Pontiac, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.6492&lon=-83.2874&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 6, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186286
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI74FEC39
- Page: https://openairdocs.org/ntsb/CHI74FEC39

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0882  74/4/25    PONTIAC,MICH        SMITH EOS-1         CR-  0  0  1  MISCELLANEOUS             ATP,FLIGHT INSTR., AGE
        TIME - 1016                    N10AE               PX-  0  0  0  TEST                      25, 3500 TOTAL HOURS, 0
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - OAKLAND PONTIAC
        DEPARTURE POINT             INTENDED DESTINATION
          PONTIAC,MICH                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - ENGINE STRUCTURE: PISTON,PISTON RINGS
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE TEMPERATURE
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           POWERPLANT - FUEL SYSTEM: OTHER
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENG MAKE AND MOD HIRTH-650 TWO CYCLE.HOLE IN BOTH PISTONS.FUEL AIR MIXT LEAN DUE INCREASED RAM AIR
```

## Aircraft

- Registration: N10AE (not matched to a registry record)
- Reported make and model: SMITH EOS-1
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Oakland Pontiac

## 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 19740425011739A](https://openairdocs.org/incident/19740425011739A), Apr 25, 1974: Amtr 0562815, Pontiac, MI, Substantial damage. Eng make and mod hirth-650 two cycle. Hole in both pistons. Fuel air mixt lean due increased ram air

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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