John Schackel Q2 N84JS
4 July 1992 · Rutland, Iowa, United States · Minor injuries
Summary
On 4 July 1992 at about 13:15 local time, a John Schackel Q2 registered N84JS, operated by Schackel, John A, was involved in an accident near Rutland, Iowa, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 13:15
- Classification
- Accident
- Location
- Rutland, Iowa, United States
- Coordinates
- 42.7600, -94.2892
- Aircraft
- John Schackel Q2
- Registration
- N84JS
- Category
- Airplane
- Engines
- 1
- Operator
- Schackel, John A
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Fort Dodge → Estherville
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- CHI92DCD08
People
1 person had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 1 | 0 |
Probable cause
A FATIGUE FAILURE OF THE ENGINE CRANKSHAFT DURING CRUISE FLIGHT.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE ACCIDENT AIRPLANE WAS IN CRUISE FLIGHT WHEN THE PILOT NOTED AN ENGINE VIBRATION FOLLOWED BY AN INFLIGHT SEPARATION OF THE PROPELLER AND SPINNER. THE PILOT DECLARED AN EMERGENCY AND LANDED IN A SOYBEAN FIELD. DURING THE LANDING ROLL THE AIRPLANE NOSED OVER IN SOFT TERRAIN. THE PROPELLER AND SPINNER WERE RECOVERED STILL ATTACHED TO THE FRONT PORTION OF THE ENGINE CRANKSHAFT. EXAMINATION OF THE CRANKSHAFT SHOWED AN AREA OF WEAR AT THE KEYSLOT WHERE THE PROPELLER FLANGE IS FITTED OVER THE SHAFT. EXAMINATION OF THE INSIDE WALLS OF THE PROPELLER FLANGE SHOWED AN 'AREA OF CONCENTRATED FRETTING WHICH LEFT A DISTINCT WEAR MARK THAT MATCHES THE FRACTURE SURFACE OF THE FAILED CRANKSHAFT.' ACCORDING TO MAINTENANCE RECORDS THE CONVERTED AUTOMOTIVE ENGINE HAD BEEN IN SERVICE SINCE MAY 23, 1987 AND HAD ACCUMULATED APPROXIMATELY 387 HOURS IN SERVICE. THE LAST ANNUAL INSPECTION ON THE AIRPLANE WAS ACCOMPLISHED ON MAY 21, 1992, APPROXIMATELY 3 FLIGHT HOURS BEFORE THE ACCIDENT.
Quoted verbatim from the NTSB record.
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 4 Oct 1992 | Cessna 182C | Marion, Iowa, United States | Paradise Skydivers, Inc. | Minor injuries | - |
| 25 Oct 1992 | Champion 7ECA | Carroll, Iowa, United States | Carroll Flying Service | No injuries | - |
| 27 Oct 1992 | Cessna 172N | Ankeny, Iowa, United States | Todd Flying Service, Inc. | No injuries | - |
| 27 Oct 1992 | Cessna 140 | Waverly, Iowa, United States | Bixby, David G. | No injuries | - |
| 5 Nov 1992 | Piper PA-28-140 | Ames, Iowa, United States | North Star Aviation, Inc. | Serious injuries | - |
| 12 Dec 1992 | Cessna 172 | La Porte City, Iowa, United States | Nichols Aviation, Inc. | No injuries | - |