PVT PLT OF AN SMA SEL LANDED GEAR UP.

Narrative

THE FLT WAS A TEST FLT AFTER FUEL SYS REPAIRS. AFTER 1 TOUCH-AND-GO; FUEL PRESSURE STARTED TO DROP. TWR WAS ADVISED OF FULL STOP LNDG. TFC INBOUND (727) PREVENTED MY BEING #1 TO LAND. I CONSIDERED DECLARING AN EMER BUT TFC WAS CLOSE IN AND THE MANEUVERING TO AVOID HIM WAS THE SAME AS BEING #2. TWR THEN ADVISED CLRED TO LAND 'CAUTION; WAKE TURB.' THE 727 MISSED APCH AT 100 FT AGL. I CARRIED PWR ON FINAL TO COUNTER THE 22 KT HEADWINDS AND CAME IN ON GS TO STAY ABOVE THE WAKE TURB. AS I FLARED; THE PLANE TOOK A LONG TIME TO LAND. THE SCRAPING OF THE REAR WHEEL WELLS WAS THE FIRST SIGN OF TROUBLE. I ALWAYS PERFORM 2 GUMPS CHKS; THE LAST ON SHORT FINAL. ELIMINATING MECHANICAL FAILURE; I MUST PRESUME PLT DISTR CAUSED BY FUEL SYS; TFC AVOIDANCE; WAKE TURB; PREVENTED HABITUAL PERFORMANCE. CONTRIBUTING FACTORS ARE: CARRYING PWR INBOUND ON FINAL TO COUNTER HEADWINDS DEFEATED THE GEAR WARNING ALARM; PREVENTING A LAST CHANCE REMINDER. A SIMPLE SOLUTION; OTHER THAN PLT TRAINING; IS FOR THE GEAR ALARM TO BE VISUAL AND AURAL; SWITCHED BY THE APCH AIRSPD SO THAT PWRED APCHS (LOW DRAGGED IN OR HEADWINDS) WILL NOT BE DEFEATED BY THE THROTTLE POS.