ASN Wikibase Occurrence # 245325
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| Date: | Wednesday 2 December 2020 |
| Time: | 22:15 LT |
| Type: |  Bellanca 17-30A Viking |
| Owner/operator: | Private |
| Registration: | N28067 |
| MSN: | 79-30966 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 3187 hours |
| Engine model: | Continental IO-550F4 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Arden Hills, MN -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Minneapolis-Anoka County-Blaine Arpt(Janes Field) Airport, MN (KANE) |
| Arden Hills, MN | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that he heard a loud 'bang' and the engine began to vibrate and ultimately lost complete power. He executed a forced landing to a highway during which the airplane struck a car and a highway divider which resulted in substantial damage to both wings.
Postaccident engine examination revealed that the Nos. 5 and 6 connecting rods had failed. Further examination revealed two undamaged rod nuts within the oil pan that had no remnant of a rod bolt within the threaded portion of the nut. Additionally, a rod bolt, although damaged, was complete from bolt head to threaded shank and did not have a nut on the threaded portion.
Review of maintenance records revealed that the Nos. 1, 4, and 6 cylinders had been removed and replaced due to low compression about 8 years and 396 hours before the accident, but it is not known if the connecting rods were removed at this same time. The most recent engine overhaul was completed 16 years before the accident, and it had accumulated about 1,296 hours time-in-service since the overhaul.
Based on the available evidence, the loss of engine power was likely due to improper connecting rod installation that resulted in the loss of connecting rod bolt torque, separation of the rod bolt nuts, and subsequent failure of the Nos. 5 and 6 connecting rods.
Probable Cause: Incorrect connecting rod installation, which resulted in the failure of the nos. 5 and 6 connecting rods and subsequent total loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB CEN21LA073
https://flightaware.com/resources/registration/N28067
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Dec-2020 03:44 | Captain Adam | Added |
| 03-Dec-2020 04:52 | Geno | Updated [Time, Aircraft type, Registration, Cn, Operator, Total occupants, Source] |
| 03-Dec-2020 06:40 | RobertMB | Updated [Time, Total occupants, Location, Nature, Source, Narrative] |
| 03-Dec-2020 06:58 | Anon. | Updated [Total occupants, Source] |
| 03-Dec-2020 10:00 | RobertMB | Updated [Location, Nature, Source, Damage, Narrative] |
| 03-Dec-2020 16:38 | Captain Adam | Updated [Location, Damage, Narrative] |
| 03-Dec-2020 17:05 | RobertMB | Updated [Location, Damage, Narrative] |
| 03-Dec-2020 18:54 | Captain Adam | Updated [Damage, Narrative] |
| 14-Oct-2022 12:30 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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