GEAR UP LNDG. ACFT EQUIP DESIGN PROB. ACFT DAMAGED. PLT DEV.

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ON ROUTINE FLT FROM FXE TO FLL ENTERED L BASE; COMPLETED PRE-LNDG CHKLIST. FLAPS FULL DOWN; LNDG GEAR WAS NOT SELECTED DOWN DUE TO DISTR. RETARDED THROTTLES AND HEARD GEAR HORN. SOUNDED LIKE ASYMMETRICAL THRUST WARNING. NO ACTION TAKEN. LANDED RWY 13 WITH NO LNDG GEAR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR OPERATES A PART 129 ADVISOR/TECHNICAL OP FOR FOREIGN ACRS MAINT PROGRAMS AND HANDLES ACFT MANUALS AND MEL TECH LITERATURE PRODUCTION. HE HAS A HIGH AMOUNT OF HRS AND CARRIES BUT A PVT PLT LICENSE. HE NORMALLY HAS ANOTHER RATED PLT WITH HIM BUT DID NOT IN THIS INSTANCE. THE OTHER OCCUPANT WAS A CORPORATE MECH. THE ACFT WAS A PIPER 601 AEROSTAR WHICH HE USES AS A FREIGHTER. RPTR CITED SEVERAL DISTRS THAT ALLOWED THE EVENT TO OCCUR. TFC WAS HVY AND HE WAS ABOUT #5 IN LINE. HE HAD BEEN ASKED TO LAND AND HOLD SHORT OF RWY 9R. HE HAD BUSINESS MEETINGS ON HIS MIND AND HE WAS LATE. HE SAID SCHEDULE PRESSURE WAS FELT AND HE WAS UPSET. THE MECH WAS TAKING PICTURES OF THE APCHING RWY WITH A STILL CAMERA AND HAD LITTLE FLYING EXPERIENCE. THE ASYMMETRICAL WARNING REFED IS A DUAL PITOT SYS MOUNTED ON THE ENG NACELLES THAT ISSUES A WARNING OF YAW SENSED FROM VARIED PRESSURES (FROM AN ENG FAILURE) AND PRODUCES AN INDICATOR ARROW IN THE COCKPIT; POINTING TO THE FAILED ENG. THE SOUND IS THE SAME AS THE GEAR WARNING HORN. THOSE 2 WARNING SOUNDS ARE THE ONLY ONES IN THE ACFT. RPTR SAYS HE IS GOING TO CHANGE THE 'ENG' WARNING TO A BELL TYPE.