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ASN Wikibase Occurrence # 37477
Last updated: 3 September 2020
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Date:18-JAN-1989
Time:08:30
Type:Silhouette image of generic P28A model; specific model in this crash may look slightly different
Piper PA-28-140
Owner/operator:private
Registration: N8456R
C/n / msn: 28-22358
Fatalities:Fatalities: 2 / Occupants: 3
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Bagley, AL -   United States of America
Phase: Landing
Nature:Private
Departure airport:Walls, MS (2M6)
Destination airport:Eufaula, AL (EUF)
Investigating agency: NTSB
Narrative:
ACCORDING TO THE SURVIVING PASSENGER, A PARTIAL LOSS OF PWR OCCURRED DRG FLT & THE PLT TRIED TO LAND IN A FIELD, BUT THEFIELD WAS TOO SHORT & THE ACFT HIT TREES & CRASHED. DRG AN EXAM OF THE ENG, A METAL FRAGMENT WAS FND IN THE #3 CYLINDER.EVIDENCE OF FOREIGN OBJECT DMG (PEENING) WAS FND IN THE #2 & #3 COMBUSTION CHAMBERS & ON THEIR RESPECTIVE PISTON FACES. THE RESPECTIVE SPARK PLUGS WERE DMGD TO THE POINT THAT THEIR GROUND ELECTRODES HAD BECOME DISPLACED & SHORTED TO THE CENTER ELECTRODES. A METALLURGICAL EXAM OF THE FRAGMENT REVEALED IT WAS FM A BROKEN EXHAUST VALVE; HOWEVER, EXCEPT FOR PEENING, THE VALVES WERE INTACT. FURTHER INVESTIGATION REVEALED THE ENG HAD AN EXHAUST VALVE FAILURE IN 1980 & HAD FLOWN98 HRS SINCE THEN. PIECES OF THAT VALVE WERE NOT FND & WERE ASSUMED TO HAVE BEEN 'SPIT OUT' THRU THE EXHAUST SYS. DRG ANANNUAL INSPN ON 1/12/89, AN EXHAUST VALVE FRAGMENT WAS FND IN THE ENG MUFFLER. THE OWNER WAS NOTIFIED; THE EXHAUST PIPESWERE REMOVED & INSPECTED; NO OTHER FRAGMENTS WERE FND. THE ACFT WAS NOT EQUIPPED WITH SHOULDER HARNESSES. CAUSE: INADEQUATE MAINTENANCE BY OTHER MAINTENANCE PERSONNEL WHICH ALLOWED A FOREIGN OBJECT TO REMAIN IN THE ENGINE AND DAMAGE/SHORT THE SPARK PLUGS IN THE #2 AND #3 CYLINDERS. TREES IN THE EMERGENCY LANDING AREA CONTRIBUTED TO THE ACCIDENT. IF SHOULDER HARNESSES HAD BEEN INSTALLED AND USED, INJURY(S) MAY HAVE BEEN LESS SEVERE.

Sources:

NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X27528


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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