ASN Wikibase Occurrence # 270374
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| Date: | Thursday 9 December 2021 |
| Time: | 16:44 LT |
| Type: |  Cessna P210N Pressurized Centurion |
| Owner/operator: | Coho Aviation LLC |
| Registration: | N152BT |
| MSN: | P21000486 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 4619 hours |
| Engine model: | Continental TSIO-520-P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Stark's Twin Oaks Airpark (7S3), Hillsboro, OR -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Hillsboro, OR (7S3) |
| Portland-Hillsboro Airport, OR (HIO/KHIO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was flying the airplane to an airport 7 miles from the departure airport after it had just received an annual inspection when the accident occurred. He reported the airplane was struggling to climb and maintain altitude and, being unsure he would make it to the destination airport, he elected to return to the departure airport. After he verified that the engine controls were at their correct positions, he saw the exhaust gas temperature (EGT) spike on three cylinders. He adjusted the mixture to cool the cylinders but the EGTs remained elevated, so he landed the airplane in an orchard, which resulted in substantial damage to the horizontal stabilizers.
A postaccident engine run and examination of the engine revealed that the right magneto was not operational due to corrosion build-up inside the magneto. A review of the maintenance records revealed that the right magneto was last serviced about 609 hours before the accident; the last 500-hour inspection was completed about 850.7 hours; and the last overhaul was completed 1,386 hours (about 19 years) before the accident, respectively.
It is likely that the inoperable magneto reduced the power output and prevented the pilot from maintaining altitude.
Probable Cause: The on-ground collision with a tree during an off airport precautionary landing. Contributing was the partial loss of engine power for undetermined reasons.
Accident investigation:
 |
|
Sources:
NTSB WPR22LA060
FAA register: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=152BT
https://flightaware.com/live/flight/N152BT
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Dec-2021 02:23 | Geno | Added |
| 10-Dec-2021 14:22 | johnwg | Updated [Time, Aircraft type, Registration, Cn, Operator, Phase, Nature, Destination airport, Source, Damage, Narrative, Category] |
| 11-Dec-2021 06:51 | RobertMB | Updated [Time, Aircraft type, Departure airport, Destination airport, Source, Narrative] |
| 11-Dec-2021 18:59 | johnwg | Updated [Time, Source, Narrative] |
| 04-Apr-2024 10:03 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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