Left main gear of a commuter small transport collapsed after landing at mci.

Attributes
ACN	167796
Time
Date	199101
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mic airport : mci
State Reference	MO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 240 flight time total : 1000 flight time type : 185
ASRS Report	167796
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On ILS to mci, nose gear green light did not illuminate on gear extension. Executed missed approach, low pass past tower, and then circle to land. Tower said nose gear appeared to be in vertical position. After gentle landing, nose gear green light illuminated. Shortly thereafter, left main gear green light extinguished. After taxiing another 200 yds, left main gear collapsed. Passenger were evacuated with no injuries. Before this flight, maintenance had found a problem with wiring to nose gear which had been causing gear warning horn to come on, even though we had 3 green. When we didn't get a green light on the nose, we opted not to try pumping the gear down, our decision being influenced by previous history. 2 questions we should have asked the tower: 1) was nose gear completely vertical or partially forward (its normal position)? 2) how did the main gear look? As it turned out, the down lock broke on the left main gear, a problem completely unrelated to the nose gear. There was nothing the crew could have done to prevent this situation, but it did cause me to realize that it is easy to fixate on a particular crisis. Be prepared for other things to happen.

Original NASA ASRS Text

Title: LEFT MAIN GEAR OF A COMMUTER SMT COLLAPSED AFTER LNDG AT MCI.

Narrative: ON ILS TO MCI, NOSE GEAR GREEN LIGHT DID NOT ILLUMINATE ON GEAR EXTENSION. EXECUTED MISSED APCH, LOW PASS PAST TWR, AND THEN CIRCLE TO LAND. TWR SAID NOSE GEAR APPEARED TO BE IN VERT POS. AFTER GENTLE LNDG, NOSE GEAR GREEN LIGHT ILLUMINATED. SHORTLY THEREAFTER, LEFT MAIN GEAR GREEN LIGHT EXTINGUISHED. AFTER TAXIING ANOTHER 200 YDS, LEFT MAIN GEAR COLLAPSED. PAX WERE EVACUATED WITH NO INJURIES. BEFORE THIS FLT, MAINT HAD FOUND A PROB WITH WIRING TO NOSE GEAR WHICH HAD BEEN CAUSING GEAR WARNING HORN TO COME ON, EVEN THOUGH WE HAD 3 GREEN. WHEN WE DIDN'T GET A GREEN LIGHT ON THE NOSE, WE OPTED NOT TO TRY PUMPING THE GEAR DOWN, OUR DECISION BEING INFLUENCED BY PREVIOUS HISTORY. 2 QUESTIONS WE SHOULD HAVE ASKED THE TWR: 1) WAS NOSE GEAR COMPLETELY VERT OR PARTIALLY FORWARD (ITS NORMAL POS)? 2) HOW DID THE MAIN GEAR LOOK? AS IT TURNED OUT, THE DOWN LOCK BROKE ON THE LEFT MAIN GEAR, A PROB COMPLETELY UNRELATED TO THE NOSE GEAR. THERE WAS NOTHING THE CREW COULD HAVE DONE TO PREVENT THIS SITUATION, BUT IT DID CAUSE ME TO REALIZE THAT IT IS EASY TO FIXATE ON A PARTICULAR CRISIS. BE PREPARED FOR OTHER THINGS TO HAPPEN.

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.