# Accident 20150814014509A: Thomas A Siminski ZENITH CH 750, Allentown, PA, August 14, 2015

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 14, 2015, 11:04 local time
- Place: Allentown, PA
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: General operating rules (Part 91)
- Location: 40.5703° N, 75.4883° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.5703&lon=-75.4883&mi=10
- Aircraft: N1750Z, a cancelled registration (https://openairdocs.org/deregistered/N1750Z-2018-07-06) (OpenAirDocs)
- Registry model: Thomas A Siminski ZENITH CH 750 (registry code 05631LG, https://openairdocs.org/model/thomas-a-siminski-zenith-ch-750) (OpenAirDocs)
- Registry engine: Corvair GO-140 (registry code 18001, https://openairdocs.org/engine/corvair-go-140) (OpenAirDocs)
- Reported make and model: THOMAS A SIMINSKI ZENITH CH 750
- Reported engine: CORVAIR GO-140
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Private pilot
- Pilot flight hours: 328 total, 75 in this make and model, 11 in the last 90 days
- NTSB investigation: [NTSB ERA15LA311](https://openairdocs.org/ntsb/ERA15LA311) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20150814014509A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

AIRCRAFT DEPARTED ALLENTOWN QUEEN CITY (XLL) RUNWAY 25 ON A PERSONAL FLIGHT APPROXIMATELY 1100 LOCAL. THE ENGINE LOST POWER APPROXIMATELY 100 FT AGL, THE PILOT INITIATED A RETURN TO RUNWAY 7. THE ENGINE PRODUCED INSUFFICIENT POWER TO MAINTAIN FLIGHT. THE AIRCRAFT IMPACTED TREES AND CAME TO REST ON ITS NOSE IN THE LITTLE LEHIGH CREEK, APPROXIMATELY ½ MILE FROM THE DEPARTURE END OF 25. THE SOLE OCCUPANT WAS THE PILOT WHO SUSTAINED MODERATE INJURIES AND WAS TRANSPORTED TO THE HOSPITAL.

THE AIRCRAFT TOTAL FUEL CAPACITY IS 24 GALLONS, AT LEAST 10 GALLONS OF AUTOMOTIVE FUEL WERE RECOVERED FROM THE WRECKAGE, ALL FUEL VALVES WERE POSITIONED CORRECTLY FOR FLIGHT. THE IGNITION SYSTEM WAS IN THE ON POSITION, SELECTED TO THE NUMBER 1 SYSTEM. THE #1 SPARK PLUG (RIGHT REAR) WAS FOUND MISSING FROM THE CYLINDER HEAD BUT ATTACHED TO THE IGNITION LEAD. THE CARBURETOR THROAT WAS UNOBSTRUCTED. THE AIRFRAME INDUCTION SYSTEM HAS TOO MUCH DAMAGE TO DETERMINE IF ANY PRE IMPACT ANOMALIES EXISTED. ENGINE CONTROLS WERE CONTINUOUS BUT JAMMED BY IMPACT DAMAGE. AERODYNAMIC CONTROL CONTINUITY COULD NOT BE ASCERTAINED DUE TO IMPACT AND RESCUE DAMAGE.

SDR 2015FA0000462 FILED 9/23/2015.

## The NTSB's investigation of this event (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 ERA15LA311](https://openairdocs.org/ntsb/ERA15LA311), Aug 14, 2015: Thomas A Siminski Zenith CH 750 (N1750Z), Allentown, PA, substantial damage. Probable cause: A partial loss of engine power due to the No. 1 spark plug being liberated from the cylinder head due to the stripped threads in the cylinder head. Contributing to the accident was the pilot’s…

## Other reports on N1750Z (1)

Matched to the same aircraft by N-number and date.

- [Incident 20120909018249I](https://openairdocs.org/incident/20120909018249I), Sep 9, 2012: Thomas A Siminski ZENITH CH 750 (N1750Z), Allentown, PA, Minor damage. Upon landing, aircraft stalled just prior to touchdown causing aircraft to land hard causing a jolt and bounce, at time of jolt pilot advanced throttle and…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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