ASN Wikibase Occurrence # 26535
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| Date: | Monday 5 April 1982 |
| Time: | 16:15 |
| Type: |  Piper PA-31-350 Chieftain |
| Owner/operator: | Private |
| Registration: | N123CB |
| MSN: | 31-7752161 |
| Total airframe hrs: | 1611 hours |
| Engine model: | LYCOMING 540-J2BD |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Destroyed |
| Location: | Baconton, Mitchell County, Georgia -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Austin–Bergstrom International Airport, Austin, Texas (AUS/KAUS) |
| Henry Tift Myers Airport, Tifton, Georgia (TMA/KTMA) | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
AS THE PILOT WAS DESCENDING FROM 7000 TO 5000 FT, HE HEARD A LOUD BANG, FOLLOWED BY A TEMPORARY VIBRATION AND A VIOLENT SWERVE TO THE RIGHT. HE LOOKED OUT THE RIGHT WINDOW AND THOUGHT THE RIGHT ENGINE HAD FALLEN OFF SINCE ALL HE COULD SEE WAS THE TOPS OF THE ENGINE MOUNTS. THE AIRCRAFT WAS CONTROLLABLE ONLY AFTER REDUCING THE LEFT ENGINE POWER TO IDLE.
DURING A WHEELS UP/FORCED LANDING, THE PLANE TORE THROUGH A FENCE, SLID ACROSS A PAVED ROAD, WENT OVER AN EMBANKMENT AND BEGAN BURNING AFTER IT CAME TO REST. THE PILOT RECEIVED A BACK INJURY AND HAD DIFFICULTY EGRESSING.
AN INVESTIGATION REVEALED THE PROPELLER HUB HAD FAILED FROM FATIGUE WHICH RESULTED IN BLADE SEPARATION AND SUBSEQUENT ENGINE TEARAWAY. THE ENGINE HAD REMAINED ATTACHED TO THE AIRFRAME BY CABLES.
METALLURGICAL EXAMINATION OF THE HUB REVEALED THAT THE FATIGUE ORIGINATED AT A THREADED GREASE FITTING. GOUGING WAS VISIBLE ON THE INNER WALL. A SET OF INCORRECT COUNTERWEIGHTS WERE FOUND ON THE PROPELLER. THE COUNTERWEIGHT'S FUNCTION WAS TO REDUCE VIBRATION.
Sources:
1. NTSB Identification: ATL82FA092 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20020917X01738&key=1
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=123CB
3. [LINK NOT WORKING ANYMORE:http://www.baaa-acro.com/1982/archives/crash-of-a-piper-pa-31-navajo-chieftain-in-georgia/]
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 06-May-2015 23:32 | Dr. John Smith | Updated [Cn, Operator, Total fatalities, Total occupants, Other fatalities, Location, Phase, Nature, Source, Damage, Narrative] |
| 13-Jun-2015 18:45 | Dr. John Smith | Updated [Location, Nature, Departure airport, Destination airport, Source] |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Sep-2017 20:46 | Dr. John Smith | Updated [Source, Narrative] |
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