ASN Wikibase Occurrence # 207038
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| Date: | Sunday 4 March 2018 |
| Time: | 16:58 LT |
| Type: |  Raytheon A36 Bonanza |
| Owner/operator: | Systima Technologies INC |
| Registration: | N207PC |
| MSN: | E-3503 |
| Year of manufacture: | 2003 |
| Total airframe hrs: | 1069 hours |
| Engine model: | Continental IO-550B39 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | King County, Enumclaw, WA -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Yuma MCAS/Yuma International Airport, AZ (YUM/KNYL) |
| Everett-Snohomish County Airport, WA (PAE/KPAE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was at cruise altitude en route on a cross-country flight from Arizona to Washington when he noted that the engine oil pressure indicated zero and the manifold pressure was near zero. He then heard ''¦a loud bang, as though the engine had thrown a rod.' The cabin filled with smoke and oil covered the windscreen, and the pilot conducted a forced landing into a stand of trees, during which the airplane sustained substantial damage.
Examination of the airframe revealed no anomalies that would have precluded normal operation. An examination of the engine revealed three holes in the crankcase, each consistent with an internal engine failure. All six cylinders remained attached to their respective cylinder bays; there was no indication of impact damage. The Nos. 2, 4 and 5 connecting rods had separated from the crankshaft. All rod bearings displayed lubrication distress consistent with oil starvation. The oil line B-nut attached to the turbocharger scavenge check valve was loose.
Based on the available information, it is likely that the loose oil line B-nut resulted in a gradual loss of oil during the long cross-country flight, which subsequently resulted in the separation of the connecting rods due to oil starvation and a total loss of engine power.
Probable Cause: A total loss of engine power due to oil starvation as a result of a loose oil line B-nut.
Accident investigation:
 |
|
Sources:
NTSB WPR18LA098
https://flightaware.com/live/flight/N207PC
Location
Media:
1 adult male involved in single engine plane. Alert and talking. Pt to be airlifted as precaution, weather allowing. pic.twitter.com/NRsg1wDx4w
— Puget Sound Fire (@PugetSoundFire) March 5, 2018
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Mar-2018 03:09 | Geno | Added |
| 05-Mar-2018 03:30 | Geno | Updated [Aircraft type, Registration, Cn, Operator, Destination airport, Source, Narrative] |
| 05-Mar-2018 03:35 | Iceman 29 | Updated [Time, Aircraft type, Registration, Cn, Operator, Destination airport, Source, Embed code, Narrative] |
| 05-Mar-2018 18:48 | harro | Updated [Aircraft type, Embed code] |
| 06-Mar-2018 16:14 | Iceman 29 | Updated [Aircraft type, Registration, Cn, Operator, Nature, Departure airport, Destination airport, Source, Narrative] |
| 01-Jan-2021 23:09 | Geno | Updated [Time, Aircraft type, Departure airport, Destination airport, Source] |
| 09-Jul-2022 12:36 | ASN Update Bot | Updated [Time, Other fatalities, Source, Damage, Narrative, Category, Accident report] |
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