ASN Wikibase Occurrence # 299024
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| Date: | Sunday 7 May 2000 |
| Time: | 17:40 LT |
| Type: |  Cessna 170B |
| Owner/operator: | Private |
| Registration: | N992EZ |
| MSN: | 25905 |
| Total airframe hrs: | 3245 hours |
| Engine model: | Lycoming O-360-A1A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | DELTA JUNCTION, Alaska -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | VALDEZ , AK (VDZ) |
| DELTA JUNCTION , AK (D66 | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The solo private pilot reported that while in cruise flight, about 600 feet above the ground, the engine RPM suddenly dropped to idle. Emergency engine procedures did not restore full engine power, and he selected a forced landing area that contained trees. The airplane sustained damage to the wings, fuselage, and empennage. An FAA airworthiness inspector who traveled to the accident scene reported that when he inserted a probe into the muffler, he noted 'there was something loose within the muffler.' The muffler assembly was subsequently removed from the airplane, and shipped to the NTSB investigator-in-charge. On May 15, the muffler assembly was cut open in the presence of the NTSB investigator-in-charge. An internal inspection revealed extensive thermal destruction of the internal baffling material. The baffling material that remained in the muffler measured about 4 inches by 3 inches. By placing the remaining material in various position over the exhaust port, the NTSB investigator was unable to position it in such a way that a blockage would occur.
Probable Cause: A loss of engine power due to an undetermined reason. A factor in the accident was unsuitable terrain for a forced landing.
Accident investigation:
 |
|
Sources:
NTSB ANC00LA054
History of this aircraft
Other occurrences involving this aircraft
| 4 July 1990 | N3261A | Ronald Smith | 0 | Anchorage, AK | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Oct-2022 01:35 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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