ASN Wikibase Occurrence # 176068
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| Date: | Monday 11 May 2015 |
| Time: | 22:41 |
| Type: |  Piper PA-28-161 Warrior |
| Owner/operator: | Private |
| Registration: | N3024S |
| MSN: | 28-7916297 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 10672 hours |
| Engine model: | Lycoming O-320-D3G |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Ranger Airport, Ranger, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | Abilene Regional Airport, TX (ABI/KABI) |
| Cleburn, TX (KCBN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial pilot reported that, during cruise flight on a night training flight, he heard “two knocks” coming from the engine, followed by a total loss of power. After attempting to restart the engine without success, the pilot executed a forced landing onto a field near Ranger Airport (F23), during which the airplane impacted a tree.
Teardown of the engine revealed that the No. 4 piston crown and connecting rod were fractured. Laboratory examination revealed two thumbnail-shaped fatigue cracks on the piston crown’s underside near an oil drain hole along the top oil groove on the piston circumference. The fatigue cracks had propagated from initiation sites along the circumferential oil groove at or near the oil drain hole. The cause of the initiation of the fatigue cracks could not be determined due to postfracture smearing damage.
Probable Cause: A total loss of engine power during cruise flight due to piston fatigue cracking for reasons that could not be determined due to postfracture smearing damage.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-May-2015 15:43 | Geno | Added |
| 12-May-2015 17:15 | Geno | Updated [Registration, Cn, Source, Damage, Narrative] |
| 20-May-2015 16:16 | Geno | Updated [Time, Nature, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 18-Aug-2017 19:28 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 01-Jun-2023 11:52 | Ron Averes | Updated [[Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]] |
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