ASN Wikibase Occurrence # 17036
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: | Saturday 29 March 2008 |
| Time: | 16:54 |
| Type: |  Cessna P210N Pressurized Centurion |
| Owner/operator: | Private |
| Registration: | N4839P |
| MSN: | P21000120 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 2562 hours |
| Engine model: | Teledyne Continental TSIO-520-P |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Elizabeth, CO -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Lamar, CO (LAA) |
| Denver, CO (APA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a normal descent on approach for landing at 8,500 feet mean sea level, the engine "let go/popped into a higher pitch sound, and the power dropped off. [The pilot] checked the fuel flow, tried to get power with the throttle, but no response." During a forced landing, the airplane impacted the side of a gravel road, traveled across the road, struck a ditch, and skidded on the fuselage bottom for approximately 75 feet were it came to rest upright in a residential yard. Examination of the engine exhibited fretting on all six cylinder decks and the main bearing case half sections. The number 2 main bearing support bearing tang lock-slot was found elongated. Various degrees of wear were noted on all crankshaft main bearings, and the number 2 main bearing showed additional wear. The crankshaft number 2 main journal exhibited signatures of thermal discoloration. All oil transfer galleries were free and clear of debris. The camshaft was intact, however, the camshaft gear had a semi-circular section with 7 gear teeth separated, which was found in the gearbox. Metallurgical examination showed the fracture initiated at the surface and progressed in fatigue. The initiation site was damaged; however, the approximate location was identified by crack arrest lines, which encircled the origin. The reason for the fracture initiation could not be determined.
Probable Cause: the loss of engine power due to the fatigue failure of the camshaft gear. Contributing to the accident was the lack of suitable terrain for the forced landing.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2008 21:24 | Fusko | Added |
| 21-Jul-2008 05:38 | Anon. | Updated |
| 10-Jun-2013 15:40 | Uli Elch | Updated [Narrative] |
| 10-Jun-2013 19:41 | harro | Updated [Aircraft type, Registration, Source, Narrative] |
| 21-Dec-2016 19:13 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 03-Dec-2017 10:21 | ASN Update Bot | Updated [Cn, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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