ASN Wikibase Occurrence # 357764
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Sunday 18 February 1996 |
| Time: | 14:10 LT |
| Type: |  Cessna 172 |
| Owner/operator: | Private |
| Registration: | N758CQ |
| MSN: | R172-2992 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 924 hours |
| Engine model: | CONTINENTAL IO-360-KB |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Worthington, MN -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | (KOTG) |
| Buffalo, MN (8Y2) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
After climbing to 3500 feet, the pilot noted that smoke was entering the cockpit and that the engine was beginning to run rough. He diverted back toward the airport, but noted that the oil pressure began dropping rapidly and that the RPM began to fluctuate. The pilot then decided to secured the engine and make an emergency landing on a gravel road. During the landing, the right wing hit a yield sign on the side of the road. There was no indication of oil on the dipstick. A two to three inch hole was discovered in the crankcase of the engine. Examination of the engine revealed that a hole had been burned through the number three piston; the #1 and #2 connecting rods were off the crankshaft; and the #1 and #2 crankshaft journals were partially melted. The fuel system was checked and no defects were discovered. An examination of the magnetos revealed that the race inside the left magneto was loose and rotating within the aluminum housing. Metal particles from the race and housing covered the surface around the magneto block.
Probable Cause: Progressive failure of the engine, beginning with failure of the left magneto, which resulted in preignition or detonation, a burned hole in the #3 piston, subsequent oil exhaustion, and failure of the #1 and #2 connecting rods.
Accident investigation:
 |
|
Sources:
NTSB CHI96LA093
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 06:20 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation