ASN Wikibase Occurrence # 279409
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Friday 29 November 2019 |
| Time: | 15:45 LT |
| Type: |  Zenith STOL CH701 |
| Owner/operator: | |
| Registration: | N701WJ |
| MSN: | 7-10529 |
| Year of manufacture: | 2019 |
| Total airframe hrs: | 115 hours |
| Engine model: | Aeromomentum AM13 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Byron, California -
 United States of America
|
| Phase: | Approach |
| Nature: | Test |
| Departure airport: | Byron, CA (C83) |
| Byron, CA (C83) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot stated that he fabricated and installed a cowling on the airframe prior to the flight. During the initial climb, the engine experienced a partial loss of power and the water temperature climbed above the maximum temperature. The pilot made a forced landing at the departure airport and encountered wind during the approach. The airplane was pushed off the runway and landed hard in the grass; the airplane came to rest inverted.
The engine manufacturer provided instructions to builders to ensure there is proper venting over the engine. The pilot stated that he did not use any plans to build the cowling and did not perform any tests of the venting. The cowling was open on the bottom but did not have aft venting. As a result, the air pressure behind the radiator likely increased to be equivalent to that of the ram air, resulting in the engine overheating and experiencing detonation, leading to the loss of engine power.
Probable Cause: The pilot/builder's improper construction of the cowling, which resulted in inadequate venting of the engine, its overheating, and a partial loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB WPR20LA035
History of this aircraft
Other occurrences involving this aircraft
| 30 November 2019 | N701WJ | Private | 0 | Byron Airport (C83), Byron, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Jun-2022 19:07 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation