ASN Wikibase Occurrence # 65134
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| Date: | Sunday 6 July 2008 |
| Time: | |
| Type: |  Noorduyn Norseman V |
| Owner/operator: | Gogal Air Services |
| Registration: | C-FECG |
| MSN: | N29-43 |
| Year of manufacture: | 1948 |
| Engine model: | Pratt & Whitney R-1340-AN-1 |
| Fatalities: | Fatalities: 0 / Occupants: 8 |
| Aircraft damage: | Minor |
| Category: | Accident |
| Location: | near Snow Lake, Manitoba -
 Canada
|
| Phase: | En route |
| Nature: | Passenger |
| Departure airport: | Burntwood Lake, Manitoba |
| Snow Lake, Manitoba | |
| Investigating agency: | TSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The floatplane experienced a partial power loss due to a cracked cylinder and was forced to make an emergency landing in a marsh. No injuries reported.
Findings as to causes and contributing factors
1. The number 2 engine cylinder exhaust ear failed in fatigue in an area of casting porosity and geometric stress concentration. The casting porosity was likely introduced during manufacture of the cylinder some 50 to 80 years before the occurrence.
2. The failure of the number 2 cylinder exhaust ear prevented the exhaust valve from opening. The hot exhaust gases migrated back into the induction system through the intake valve, causing a disruption in the fuel/air mixture to the remaining cylinders, resulting in a loss of engine power.
3. The engine power loss occurred in an area of flight in which a damage-free forced landing was improbable.
Finding as to Risk
Accident investigation:
 |
|
Sources:
https://www.winnipegfreepress.com/local/aging-plane-part-blamed-for-crash-45910562.html
TSB report A08C0145
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-May-2009 07:01 | slowkid | Added |
| 26-May-2009 01:40 | slowkid | Updated |
| 30-Jun-2019 13:54 | harro | Updated [Location, Source, Narrative, Accident report, ] |
Corrections or additions? ... Edit this accident description
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