Narrative:

On dec/xa/06; I departed ZZZ in aircraft X; a piper comanche 250; for a flight back to ZZZ1 where the aircraft is based. On the flight. I practiced some holding procedures under VFR conditions (a hood was not used). Before entering class D airspace; I received current ATIS. Tower cleared me for runway 28R. I completed my pre landing (gump) procedure: fuel selector -- check. Boost pump -- on. Gear switch -- down. Mixture -- full rich. Propeller -- in (high RPM). I lined up on runway 28R. At the flare on final; loud noises were heard as the aircraft slid to a stop. After the aircraft stopped; I confirmed that the landing gear switch was in fact down. I then found a set of terminal procedure pubs wedged between the landing gear extension handle and the floor. Later inspection found the landing gear circuit breaker had been tripped. Supplemental information from acn 721195: I had completed an in-flight training portion of this flight; and we were returning to the home base airport when this gear up landing occurred. The owner and PIC at the time of the incident had gone through his pre landing checks out loud and I heard each of his aural checks (boost pump; gas on fullest tank; undercarriage or gear down; mixture rich; and seatbelts fastened). After the gear up landing we discovered that the circuit breaker had popped (when unknown) and the landing gear was still in the 'up' position. The PIC also discovered after landing that something had wedged between the landing gear handle and the floor.

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Original NASA ASRS Text

Title: A PA24-250 LANDED GEAR UP FOLLOWING A LNDG CHKLIST PERFORMANCE VERIFIED BY THE PLT AND INSTRUCTOR. A LNDG GEAR CIRCUIT BREAKER POPPED.

Narrative: ON DEC/XA/06; I DEPARTED ZZZ IN ACFT X; A PIPER COMANCHE 250; FOR A FLT BACK TO ZZZ1 WHERE THE ACFT IS BASED. ON THE FLT. I PRACTICED SOME HOLDING PROCS UNDER VFR CONDITIONS (A HOOD WAS NOT USED). BEFORE ENTERING CLASS D AIRSPACE; I RECEIVED CURRENT ATIS. TWR CLRED ME FOR RWY 28R. I COMPLETED MY PRE LNDG (GUMP) PROC: FUEL SELECTOR -- CHK. BOOST PUMP -- ON. GEAR SWITCH -- DOWN. MIXTURE -- FULL RICH. PROP -- IN (HIGH RPM). I LINED UP ON RWY 28R. AT THE FLARE ON FINAL; LOUD NOISES WERE HEARD AS THE ACFT SLID TO A STOP. AFTER THE ACFT STOPPED; I CONFIRMED THAT THE LNDG GEAR SWITCH WAS IN FACT DOWN. I THEN FOUND A SET OF TERMINAL PROC PUBS WEDGED BTWN THE LNDG GEAR EXTENSION HANDLE AND THE FLOOR. LATER INSPECTION FOUND THE LNDG GEAR CIRCUIT BREAKER HAD BEEN TRIPPED. SUPPLEMENTAL INFO FROM ACN 721195: I HAD COMPLETED AN INFLT TRAINING PORTION OF THIS FLT; AND WE WERE RETURNING TO THE HOME BASE ARPT WHEN THIS GEAR UP LNDG OCCURRED. THE OWNER AND PIC AT THE TIME OF THE INCIDENT HAD GONE THROUGH HIS PRE LNDG CHKS OUT LOUD AND I HEARD EACH OF HIS AURAL CHKS (BOOST PUMP; GAS ON FULLEST TANK; UNDERCARRIAGE OR GEAR DOWN; MIXTURE RICH; AND SEATBELTS FASTENED). AFTER THE GEAR UP LNDG WE DISCOVERED THAT THE CIRCUIT BREAKER HAD POPPED (WHEN UNKNOWN) AND THE LNDG GEAR WAS STILL IN THE 'UP' POS. THE PIC ALSO DISCOVERED AFTER LNDG THAT SOMETHING HAD WEDGED BTWN THE LNDG GEAR HANDLE AND THE FLOOR.

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.