Right main gear failed on landing at den.

Attributes
ACN	240904
Time
Date	199304
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 12000 flight time type : 5000
ASRS Report	240904
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Right main gear failure on landing. Callback conversation with reporter revealed the following: normal landing and then the right torque link failed. The right landing gear then rotated 450 degrees and was then dragged sideways. This caused severe vibration and, as the aircraft slowed to 60-80 KTS, the right gear slowly folded. During the investigation, it was implied that this was the 7TH similar failure, that the torque link bolt had failed and been found to be well below strength specifications. Counterfeit parts are suspected. Strangely, it is the right gear that always fails.

Original NASA ASRS Text

Title: R MAIN GEAR FAILED ON LNDG AT DEN.

Narrative: R MAIN GEAR FAILURE ON LNDG. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: NORMAL LNDG AND THEN THE R TORQUE LINK FAILED. THE R LNDG GEAR THEN ROTATED 450 DEGS AND WAS THEN DRAGGED SIDEWAYS. THIS CAUSED SEVERE VIBRATION AND, AS THE ACFT SLOWED TO 60-80 KTS, THE R GEAR SLOWLY FOLDED. DURING THE INVESTIGATION, IT WAS IMPLIED THAT THIS WAS THE 7TH SIMILAR FAILURE, THAT THE TORQUE LINK BOLT HAD FAILED AND BEEN FOUND TO BE WELL BELOW STRENGTH SPECS. COUNTERFEIT PARTS ARE SUSPECTED. STRANGELY, IT IS THE R GEAR THAT ALWAYS FAILS.

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.