BE76 instructor and trainee had landing gear collapse on landing.

Attributes
ACN	449309
Time
Date	199909
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tyk.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : abq.tower
Operator	general aviation : instructional
Make Model Name	Duchess 76
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Route In Use	approach : visual
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 400 flight time total : 2400 flight time type : 200
ASRS Report	449309
Person 2
Affiliation	other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : commercial pilot : multi engine
Experience	flight time last 90 days : 60 flight time total : 545 flight time type : 0
ASRS Report	449305
Events
Anomaly	aircraft equipment problem : critical other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : insufficient time
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

During training for a multi-engine commercial student, I put a beechcraft duchess on its belly during a single engine landing. I simulated an engine failure on the upwind leg of the pattern. My student dealt with the simulated failure as I had trained him. Turned base, my student extended the landing gear, and we both observed 3 green lights indicating the gear was down and locked. A normal landing was assumed. A gear collapse was suspected as the airplane smoothly touched down on the runway. The only damage done to the aircraft was bent propellers, and minor skin damage, but no structural damage whatsoever. After the airplane came to a stop, I turned the fuel selectors off, moved the mixture controls to idle cut-off, shut down fuel pumps, magnetos, battery and master switches, then ordered my student to exit the plane immediately. Prior to that, my student was the sole manipulator of the controls. In my judgement, nothing affected the perceptions of my student, nor myself. It was routine training, of a normal duration, and WX was no factor.

Original NASA ASRS Text

Title: BE76 INSTRUCTOR AND TRAINEE HAD LNDG GEAR COLLAPSE ON LNDG.

Narrative: DURING TRAINING FOR A MULTI-ENG COMMERCIAL STUDENT, I PUT A BEECHCRAFT DUCHESS ON ITS BELLY DURING A SINGLE ENG LNDG. I SIMULATED AN ENG FAILURE ON THE UPWIND LEG OF THE PATTERN. MY STUDENT DEALT WITH THE SIMULATED FAILURE AS I HAD TRAINED HIM. TURNED BASE, MY STUDENT EXTENDED THE LNDG GEAR, AND WE BOTH OBSERVED 3 GREEN LIGHTS INDICATING THE GEAR WAS DOWN AND LOCKED. A NORMAL LNDG WAS ASSUMED. A GEAR COLLAPSE WAS SUSPECTED AS THE AIRPLANE SMOOTHLY TOUCHED DOWN ON THE RWY. THE ONLY DAMAGE DONE TO THE ACFT WAS BENT PROPS, AND MINOR SKIN DAMAGE, BUT NO STRUCTURAL DAMAGE WHATSOEVER. AFTER THE AIRPLANE CAME TO A STOP, I TURNED THE FUEL SELECTORS OFF, MOVED THE MIXTURE CTLS TO IDLE CUT-OFF, SHUT DOWN FUEL PUMPS, MAGNETOS, BATTERY AND MASTER SWITCHES, THEN ORDERED MY STUDENT TO EXIT THE PLANE IMMEDIATELY. PRIOR TO THAT, MY STUDENT WAS THE SOLE MANIPULATOR OF THE CTLS. IN MY JUDGEMENT, NOTHING AFFECTED THE PERCEPTIONS OF MY STUDENT, NOR MYSELF. IT WAS ROUTINE TRAINING, OF A NORMAL DURATION, AND WX WAS NO FACTOR.

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.