Act damaged when a PA44 seminole's nose gear fails on the landing rollout at apa, co.

Attributes
ACN	547965
Time
Date	200205
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : apa.airport
State Reference	CO
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : instructional
Make Model Name	PA-44 Seminole Turbo Seminole
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	VFR
Person 1
Affiliation	other
Function	instruction : trainee
Qualification	pilot : multi engine pilot : private
Experience	flight time last 90 days : 25 flight time total : 180 flight time type : 32
ASRS Report	547965
Person 2
Affiliation	other
Function	instruction : instructor
Qualification	pilot : multi engine pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 1690 flight time type : 1000
ASRS Report	547964
Events
Anomaly	aircraft equipment problem : critical conflict : ground critical ground encounters other other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : unable
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Flying a piper seminole (PA44-180T), the gear was lowered on downwind. It was verified down and locked by 3 green lights on downwind and final. Upon a normal landing with 25 degrees of flaps (second position), positive pressure was felt on all 3 gear. After a few seconds, there was a slight shimmy in the nose gear and it then collapsed. Thus, the green light verifying the nose gear was down and locked extinguished and the gear unsafe light and horn came on. After a complete stop, both main gear still showed down and locked. No injuries were suffered by pilots or passenger. No damage was done to airport property. Cause of nose gear collapse has not been determined.

Original NASA ASRS Text

Title: ACT DAMAGED WHEN A PA44 SEMINOLE'S NOSE GEAR FAILS ON THE LNDG ROLLOUT AT APA, CO.

Narrative: FLYING A PIPER SEMINOLE (PA44-180T), THE GEAR WAS LOWERED ON DOWNWIND. IT WAS VERIFIED DOWN AND LOCKED BY 3 GREEN LIGHTS ON DOWNWIND AND FINAL. UPON A NORMAL LNDG WITH 25 DEGS OF FLAPS (SECOND POS), POSITIVE PRESSURE WAS FELT ON ALL 3 GEAR. AFTER A FEW SECONDS, THERE WAS A SLIGHT SHIMMY IN THE NOSE GEAR AND IT THEN COLLAPSED. THUS, THE GREEN LIGHT VERIFYING THE NOSE GEAR WAS DOWN AND LOCKED EXTINGUISHED AND THE GEAR UNSAFE LIGHT AND HORN CAME ON. AFTER A COMPLETE STOP, BOTH MAIN GEAR STILL SHOWED DOWN AND LOCKED. NO INJURIES WERE SUFFERED BY PLTS OR PAX. NO DAMAGE WAS DONE TO ARPT PROPERTY. CAUSE OF NOSE GEAR COLLAPSE HAS NOT BEEN DETERMINED.

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.