Narrative:

On visual approach to runway 36 at asg, started to extend gear and elected to hold it, until closer in. Tried to cancel IFR with approach, however, unsuccessful due to radio congestion. Went back to CTAF for position advisory, then back to approach to reattempt cancellation, transmission was blocked. By this point I selected second notch of flaps. No gear warning horn was audible. Failed to check gear down 3 green. Selected full flaps, power to 15 inches manifold pressure, nor was throttle gear warning horn audible. Landed aircraft with gear in retracted position. Factors contributing include, 13TH hour of duty, last of 5 legs and fatigue of early morning hour. Distractions of moderate turbulence, radio congestion. Other factors include malfunction of gear warning system, and improper use of checklist. Damage to aircraft did not require report to NTSB. Callback conversation with reporter revealed the following information: reporter states that maintenance inspection indicated that gear warning horns were inoperative on both manifold pressure and flap indicators. His company is supporting him and offered a flight 2 days later. He has support from the FAA inspector who was assigned to the incident. Inspector has suggested that the reporter use the informal hearing procedure since he can then give an opinion in addition to the facts he stated in his FAA report. Reporter's company has scheduled cargo and passenger operations.

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Original NASA ASRS Text

Title: C402 MAKES GEAR UP LNDG. GEAR WARNING HORN DOES NOT ACTIVATE.

Narrative: ON VISUAL APCH TO RWY 36 AT ASG, STARTED TO EXTEND GEAR AND ELECTED TO HOLD IT, UNTIL CLOSER IN. TRIED TO CANCEL IFR WITH APCH, HOWEVER, UNSUCCESSFUL DUE TO RADIO CONGESTION. WENT BACK TO CTAF FOR POS ADVISORY, THEN BACK TO APCH TO REATTEMPT CANCELLATION, XMISSION WAS BLOCKED. BY THIS POINT I SELECTED SECOND NOTCH OF FLAPS. NO GEAR WARNING HORN WAS AUDIBLE. FAILED TO CHK GEAR DOWN 3 GREEN. SELECTED FULL FLAPS, PWR TO 15 INCHES MANIFOLD PRESSURE, NOR WAS THROTTLE GEAR WARNING HORN AUDIBLE. LANDED ACFT WITH GEAR IN RETRACTED POS. FACTORS CONTRIBUTING INCLUDE, 13TH HR OF DUTY, LAST OF 5 LEGS AND FATIGUE OF EARLY MORNING HR. DISTRACTIONS OF MODERATE TURB, RADIO CONGESTION. OTHER FACTORS INCLUDE MALFUNCTION OF GEAR WARNING SYS, AND IMPROPER USE OF CHKLIST. DAMAGE TO ACFT DID NOT REQUIRE RPT TO NTSB. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT MAINT INSPECTION INDICATED THAT GEAR WARNING HORNS WERE INOP ON BOTH MANIFOLD PRESSURE AND FLAP INDICATORS. HIS COMPANY IS SUPPORTING HIM AND OFFERED A FLT 2 DAYS LATER. HE HAS SUPPORT FROM THE FAA INSPECTOR WHO WAS ASSIGNED TO THE INCIDENT. INSPECTOR HAS SUGGESTED THAT THE RPTR USE THE INFORMAL HEARING PROC SINCE HE CAN THEN GIVE AN OPINION IN ADDITION TO THE FACTS HE STATED IN HIS FAA RPT. RPTR'S COMPANY HAS SCHEDULED CARGO AND PAX OPS.

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.