Small aircraft twin has nose gear collapse on landing.

Attributes
ACN	223755
Time
Date	199210
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ahn
State Reference	GA
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, 2 Eng, Retractable Gear
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	observation : company check pilot
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 151 flight time total : 1050 flight time type : 26
ASRS Report	223755
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time total : 12000
ASRS Report	223584
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

The flight was a familiarization ride in a twin small aircraft as part of a chkout. The student was a captain for a major airline. The flight progressed normally until the first of a planned series of practice lndgs. The pattern and final approach were entirely normal. I personally checked all gear 'down and locked' lights 4 times. They were '3 green' each time. Additionally, I visually confirmed the nose gear down with the mirror mounted on the left engine nacelle. The final approach, landing flare, and touchdown were normal. When the nose wheel touched down it collapsed. The nose of the aircraft contacted the surface and the plane skidded to a halt. The student, who had flown the entire approach and landing, and I egressed the aircraft without incident. I don't believe that human factors played any contributing role in this incident. I would be very interested to know if the twin small aircraft series has experienced a history of nose gear problems. If so, perhaps more frequent inspections of the nose gear mechanism would be warranted. Supplemental information from acn 223584. The crash crew arrived immediately and we advised them that no one was hurt. The aircraft was examined and the main gear were both down and the nose gear was collapsed. Both left and right engine propellers were damaged. Even with the nose gear collapsed and the fact that maximum braking had been used none of the tires were blown.

Original NASA ASRS Text

Title: SMA TWIN HAS NOSE GEAR COLLAPSE ON LNDG.

Narrative: THE FLT WAS A FAMILIARIZATION RIDE IN A TWIN SMA AS PART OF A CHKOUT. THE STUDENT WAS A CAPT FOR A MAJOR AIRLINE. THE FLT PROGRESSED NORMALLY UNTIL THE FIRST OF A PLANNED SERIES OF PRACTICE LNDGS. THE PATTERN AND FINAL APCH WERE ENTIRELY NORMAL. I PERSONALLY CHKED ALL GEAR 'DOWN AND LOCKED' LIGHTS 4 TIMES. THEY WERE '3 GREEN' EACH TIME. ADDITIONALLY, I VISUALLY CONFIRMED THE NOSE GEAR DOWN WITH THE MIRROR MOUNTED ON THE L ENG NACELLE. THE FINAL APCH, LNDG FLARE, AND TOUCHDOWN WERE NORMAL. WHEN THE NOSE WHEEL TOUCHED DOWN IT COLLAPSED. THE NOSE OF THE ACFT CONTACTED THE SURFACE AND THE PLANE SKIDDED TO A HALT. THE STUDENT, WHO HAD FLOWN THE ENTIRE APCH AND LNDG, AND I EGRESSED THE ACFT WITHOUT INCIDENT. I DON'T BELIEVE THAT HUMAN FACTORS PLAYED ANY CONTRIBUTING ROLE IN THIS INCIDENT. I WOULD BE VERY INTERESTED TO KNOW IF THE TWIN SMA SERIES HAS EXPERIENCED A HISTORY OF NOSE GEAR PROBLEMS. IF SO, PERHAPS MORE FREQUENT INSPECTIONS OF THE NOSE GEAR MECHANISM WOULD BE WARRANTED. SUPPLEMENTAL INFO FROM ACN 223584. THE CRASH CREW ARRIVED IMMEDIATELY AND WE ADVISED THEM THAT NO ONE WAS HURT. THE ACFT WAS EXAMINED AND THE MAIN GEAR WERE BOTH DOWN AND THE NOSE GEAR WAS COLLAPSED. BOTH L AND R ENG PROPS WERE DAMAGED. EVEN WITH THE NOSE GEAR COLLAPSED AND THE FACT THAT MAX BRAKING HAD BEEN USED NONE OF THE TIRES WERE BLOWN.

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.