ASN Wikibase Occurrence # 193007
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| Date: | Saturday 21 January 2017 |
| Time: | 14:45 |
| Type: |  Bellanca 17-30A Viking |
| Owner/operator: | Private |
| Registration: | N39819 |
| MSN: | 73-30491 |
| Year of manufacture: | 1972 |
| Total airframe hrs: | 3109 hours |
| Engine model: | Continental IO 520 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Kidron, Sugar Creek Township, Wayne County, OH -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Medina, OH (1G5) |
| Medina, OH (1G5) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airline transport pilot was conducting a local flight and had been airborne for about 40 minutes when he heard a “bang;” the engine then began to shake and experienced a total loss of power. The pilot conducted a forced landing, and the airplane impacted a stand of pine trees before coming to rest. An onsite examination of the airplane found oil on the underside of the airframe and the back of the engine, with no oil showing on the dipstick. Additionally, the nuts securing the engine vacuum pump appeared loose.
Disassembly of the engine found only a small amount of oil in the engine sump as well as numerous metal pieces. The crankshaft No. 5 rod journal exhibited heat damage, and the connecting rod had separated from the journal, consistent with the lack of oil lubrication. A review of the engine’s maintenance records revealed that the engine had accumulated about 263 hours since overhaul. The records also indicated the vacuum pump was replaced and had accumulated 1.19 hours at the time of the accident. The accident is consistent with the loss of engine oil from the vacuum pump drive, likely as a result of maintenance personnel improperly securing the vacuum pump following replacement.
Probable Cause: Maintenance personnel’s failure to properly secure the vacuum pump, which resulted in a loss of engine oil and the subsequent total loss of engine power due to oil starvation.
Accident investigation:
 |
|
Sources:
NTSB
Location
Images:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Jan-2017 23:19 | Geno | Added |
| 23-Jan-2017 13:03 | J3 pilot | Updated [Narrative, Photo, ] |
| 24-Mar-2018 18:41 | ASN Update Bot | Updated [Time, Nature, Departure airport, Destination airport, Source, Narrative] |
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