Small aircraft has nose gear collapse on rollout after landing.

Attributes
ACN	221461
Time
Date	199209
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lrd
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 500 flight time type : 180
ASRS Report	221461
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other other : unspecified cockpit
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After landing in larado, I was instructed to continue taxi for an exit near the end of 17R. After taxi to the 5000 ft mark, the nose gear collapsed due to mechanical failure of the locking mechanism.

Original NASA ASRS Text

Title: SMA HAS NOSE GEAR COLLAPSE ON ROLLOUT AFTER LNDG.

Narrative: AFTER LNDG IN LARADO, I WAS INSTRUCTED TO CONTINUE TAXI FOR AN EXIT NEAR THE END OF 17R. AFTER TAXI TO THE 5000 FT MARK, THE NOSE GEAR COLLAPSED DUE TO MECHANICAL FAILURE OF THE LOCKING MECHANISM.

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.