Structural damage to aircraft left strut.

Attributes
ACN	169042
Time
Date	199101
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mtp
State Reference	NY
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 90 flight time total : 2500 flight time type : 400
ASRS Report	169042
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

The flight and approach to landing were normal. The landing of the small transport was also uneventful. Approximately 5 seconds after the landing roll the right wing of the aircraft started to list and get lower. It seemed as though the right tire was flat. After shutting the aircraft down, I noticed that the left strut connecting arm (the scissor arm) was completely cracked. This caused the strut to fully decompress on the left side. After the mechanics investigated it appeared that a stress fracture was already on the strut connecting arm. My recommendation is to preflight carefully and look closely at the strut and strut connecting arm for small cracks and fractures.

Original NASA ASRS Text

Title: STRUCTURAL DAMAGE TO ACFT LEFT STRUT.

Narrative: THE FLT AND APCH TO LNDG WERE NORMAL. THE LNDG OF THE SMT WAS ALSO UNEVENTFUL. APPROX 5 SECS AFTER THE LNDG ROLL THE RIGHT WING OF THE ACFT STARTED TO LIST AND GET LOWER. IT SEEMED AS THOUGH THE RIGHT TIRE WAS FLAT. AFTER SHUTTING THE ACFT DOWN, I NOTICED THAT THE LEFT STRUT CONNECTING ARM (THE SCISSOR ARM) WAS COMPLETELY CRACKED. THIS CAUSED THE STRUT TO FULLY DECOMPRESS ON THE LEFT SIDE. AFTER THE MECHS INVESTIGATED IT APPEARED THAT A STRESS FRACTURE WAS ALREADY ON THE STRUT CONNECTING ARM. MY RECOMMENDATION IS TO PREFLT CAREFULLY AND LOOK CLOSELY AT THE STRUT AND STRUT CONNECTING ARM FOR SMALL CRACKS AND FRACTURES.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.