Landing gear collapsed during landing roll on twin turboprop air taxi training flight. Cause unknown...

Attributes
ACN	471219
Time
Date	200004
Day	Fri
Local Time Of Day	1201 To 1800
Place
State Reference	KS
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax.tower
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Operating Under FAR Part	Part 135
Flight Phase	landing : roll
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 8200 flight time type : 1000
ASRS Report	471219
Person 2
Affiliation	company : air taxi
Function	observation : company check pilot
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical ground encounters other other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : unable
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Upon landing from a training flight at jabara airport in wichita, ks, first the right landing gear collapsed followed by the remaining other 2. We had rolled down the runway after landing approximately 1000 ft when the gear started to fold. It is unknown what caused the malfunction at this time, but the gear handle was in the down position and 3 gear down and locked lights were lit up. Aircraft is in shop to determine the malfunction.

Original NASA ASRS Text

Title: LNDG GEAR COLLAPSED DURING LNDG ROLL ON TWIN TURBOPROP AIR TAXI TRAINING FLT. CAUSE UNKNOWN.

Narrative: UPON LNDG FROM A TRAINING FLT AT JABARA ARPT IN WICHITA, KS, FIRST THE R LNDG GEAR COLLAPSED FOLLOWED BY THE REMAINING OTHER 2. WE HAD ROLLED DOWN THE RWY AFTER LNDG APPROX 1000 FT WHEN THE GEAR STARTED TO FOLD. IT IS UNKNOWN WHAT CAUSED THE MALFUNCTION AT THIS TIME, BUT THE GEAR HANDLE WAS IN THE DOWN POS AND 3 GEAR DOWN AND LOCKED LIGHTS WERE LIT UP. ACFT IS IN SHOP TO DETERMINE THE MALFUNCTION.

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.