C172RG landing gear collapsed after landing and aircraft departed runway.

Attributes
ACN	741145
Time
Date	200705
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : trainee
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 11.5 flight time total : 395 flight time type : 4
ASRS Report	741145
Person 2
Affiliation	other
Function	instruction : instructor
Qualification	pilot : multi engine pilot : cfi pilot : atp
Experience	flight time last 90 days : 112 flight time total : 14225 flight time type : 14
ASRS Report	741141
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

I flew from the left seat with cfii right seat for complex instruction and commercial maneuvers instruction. Normal departure runway 16; l-hand pattern for 180 power off landing. Prior to abeam 1000 ft marks and abeam 1000 ft; carburetor heat; power idle; gear down; propeller full forward. Verbally confirmed with instructor as I pulled the gear lever out; down; and pushed in. Trimmed and looked for the green gear light and confirmed with instructor. Turned base to final and noted a left tire. Went to flare as airspeed was 65 KTS then 63 KTS and heading down; normal attitude. Instructor pulled propeller back to accelerate aircraft forward. Touched down on mains lined up with centerline and held off nosewheel; felt shimmy; aircraft pulled hard left and I applied right rudder. Right side of aircraft dropped and aircraft fell forward to the nose. I pulled back hard on the yoke to keep from nosing over and went off right side of runway. Instructor shut down fuel and electric; exited aircraft. The nosewheel was down and locked with flat tire. Left wheel appeared twisted and in fuselage and right wheel was in fuselage and under some dirt. The gear lever was in the down and locked position and the gear fuse was in. No known injuries to myself or the instructor; no damage to the propeller or engine. I heard the stall warning horn as I flared and no other horn sounded at any time. The power was at idle. I had the landing gear knob down and locked with a green light and saw a tire. I landed on 2 mains that collapsed. All I could do was minimize injury and damage to the aircraft. The airplane at rest had the nosewheel extended; gear knob down and in the lock position. The problem clearly arose from a gear malfunction or mechanical failure which there was no warning prior to touchdown on the mains. If there were any indications prior to landing that the gear was not down and locked (no green; no tire or a gear horn warning); a go around with emergency procedures to get the gear down would have been attempted. The instructor gave no indication of anything amiss regarding the landing prior to touchdown.

Original NASA ASRS Text

Title: C172RG LNDG GEAR COLLAPSED AFTER LNDG AND ACFT DEPARTED RWY.

Narrative: I FLEW FROM THE L SEAT WITH CFII R SEAT FOR COMPLEX INSTRUCTION AND COMMERCIAL MANEUVERS INSTRUCTION. NORMAL DEP RWY 16; L-HAND PATTERN FOR 180 PWR OFF LNDG. PRIOR TO ABEAM 1000 FT MARKS AND ABEAM 1000 FT; CARB HEAT; PWR IDLE; GEAR DOWN; PROP FULL FORWARD. VERBALLY CONFIRMED WITH INSTRUCTOR AS I PULLED THE GEAR LEVER OUT; DOWN; AND PUSHED IN. TRIMMED AND LOOKED FOR THE GREEN GEAR LIGHT AND CONFIRMED WITH INSTRUCTOR. TURNED BASE TO FINAL AND NOTED A L TIRE. WENT TO FLARE AS AIRSPD WAS 65 KTS THEN 63 KTS AND HDG DOWN; NORMAL ATTITUDE. INSTRUCTOR PULLED PROP BACK TO ACCELERATE ACFT FORWARD. TOUCHED DOWN ON MAINS LINED UP WITH CTRLINE AND HELD OFF NOSEWHEEL; FELT SHIMMY; ACFT PULLED HARD L AND I APPLIED R RUDDER. R SIDE OF ACFT DROPPED AND ACFT FELL FORWARD TO THE NOSE. I PULLED BACK HARD ON THE YOKE TO KEEP FROM NOSING OVER AND WENT OFF R SIDE OF RWY. INSTRUCTOR SHUT DOWN FUEL AND ELECTRIC; EXITED ACFT. THE NOSEWHEEL WAS DOWN AND LOCKED WITH FLAT TIRE. L WHEEL APPEARED TWISTED AND IN FUSELAGE AND R WHEEL WAS IN FUSELAGE AND UNDER SOME DIRT. THE GEAR LEVER WAS IN THE DOWN AND LOCKED POS AND THE GEAR FUSE WAS IN. NO KNOWN INJURIES TO MYSELF OR THE INSTRUCTOR; NO DAMAGE TO THE PROP OR ENG. I HEARD THE STALL WARNING HORN AS I FLARED AND NO OTHER HORN SOUNDED AT ANY TIME. THE PWR WAS AT IDLE. I HAD THE LNDG GEAR KNOB DOWN AND LOCKED WITH A GREEN LIGHT AND SAW A TIRE. I LANDED ON 2 MAINS THAT COLLAPSED. ALL I COULD DO WAS MINIMIZE INJURY AND DAMAGE TO THE ACFT. THE AIRPLANE AT REST HAD THE NOSEWHEEL EXTENDED; GEAR KNOB DOWN AND IN THE LOCK POS. THE PROB CLRLY AROSE FROM A GEAR MALFUNCTION OR MECHANICAL FAILURE WHICH THERE WAS NO WARNING PRIOR TO TOUCHDOWN ON THE MAINS. IF THERE WERE ANY INDICATIONS PRIOR TO LNDG THAT THE GEAR WAS NOT DOWN AND LOCKED (NO GREEN; NO TIRE OR A GEAR HORN WARNING); A GAR WITH EMER PROCS TO GET THE GEAR DOWN WOULD HAVE BEEN ATTEMPTED. THE INSTRUCTOR GAVE NO INDICATION OF ANYTHING AMISS REGARDING THE LNDG PRIOR TO TOUCHDOWN.

Data retrieved from NASA's ASRS site as of January 2009 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.