ASN Wikibase Occurrence # 244469
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| Date: | Wednesday 28 October 2020 |
| Time: | 10:40 LT |
| Type: |  Cessna 182T Skylane |
| Owner/operator: | Flying Neutrons LLC |
| Registration: | N3537C |
| MSN: | 18280966 |
| Year of manufacture: | 2001 |
| Total airframe hrs: | 5114 hours |
| Engine model: | Lycoming IO540-AB1A5 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | South of Warren County Airport/John Lane Field (I68), Lebanon, OH -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Batavia, OH (I69) |
| Lebanon, OH | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot and passenger were on a cross-country flight after maintenance personnel installed new avionics in the airplane. While at cruise altitude, the engine began to knock and vibrate and subsequently the engine lost all power. The pilot was unable to maintain altitude or reach an airport and landed the airplane in a field. The airplane overran the field and impacted trees; the wings and fuselage sustained substantial damage.
The wreckage was examined, and a plastic cap was found installed on the engine crankcase breather port; the engine crankcase seal was found dislodged. Oil was found on the underside of the engine compartment and cowling. The blocked breather port likely allowed excessive pressure to build up inside the engine and resulted in the dislodged crankcase seal and a loss of oil.
The investigation determined the mechanic who installed the avionics on the airplane also performed maintenance on the engine, which was outside of the repair station's operations specifications. The mechanic did not have technical data for the work performed on the engine, did not document the work performed, and did not remove the plastic cap from the crankcase breather port following the installation of avionics.
The accident is consistent with a total loss of engine power due to oil starvation as a result of improper maintenance.
Probable Cause: Improper maintenance that resulted in a blocked crankcase breather port and a subsequent total loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB CEN21LA034
https://flightaware.com/live/flight/N3537C/history/20201028/1500Z/I69/I68
FAA register: https://registry.faa.gov/aircraftinquiry/Search/NNumberResult
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2020 18:27 | Geno | Added |
| 28-Oct-2020 23:35 | Geno | Updated [Time, Aircraft type, Registration, Cn, Operator, Location, Nature, Departure airport, Destination airport, Source, Narrative] |
| 29-Oct-2020 01:24 | RobertMB | Updated [Source, Narrative] |
| 30-Oct-2020 20:42 | Captain Adam | Updated [Narrative] |
| 07-Jul-2022 19:07 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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