|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||airport : zzz.airport|
|Altitude||msl single value : 2000|
|Controlling Facilities||tower : zzz.tower|
|Operator||general aviation : personal|
|Make Model Name||PA-34-200 Seneca I|
|Operating Under FAR Part||Part 91|
|Flight Phase||climbout : intermediate altitude|
|Function||flight crew : single pilot|
|Qualification||pilot : multi engine|
pilot : commercial
pilot : instrument
|Experience||flight time last 90 days : 7.5|
flight time total : 725
flight time type : 141
|Affiliation||government : faa|
|Function||controller : local|
|Anomaly||aircraft equipment problem : critical|
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||controller : provided flight assist|
flight crew : declared emergency
flight crew : diverted to another airport
First flight after annual inspection. On climb-out, noticed reduced performance, and 'down' nosewheel in mirror. Lights out on panel indicating that gear had been raised. Contacted ZZZ tower. Overflew tower to confirm (I had recycled gear-no greens-and gear pump control circuit breaker had popped) nose gear down, main gear not down. Executed emergency gear down procedure. Fly over tower confirmed all gear down. No gear lights. Recycle of circuit breaker was not successful. With excellent help from tower set up for possible gear up landing-touch down successful, gear was locked down. Still no green lights, circuit breaker still popped. Subsequent inspection revealed bare wires in gear well that touched when gear was coming up-shorted the electrical circuit for gear lights and actuators, according to mechanic. I knew the gear had been fully checked for emergency operation, and I was reasonably confident gear was down and locked. There are 2 circuit breaker's for the gear control pump-one for electrical and one for pump. Pump was ok, electrical was popped. When opening door on final, was startled by the effect on control of aircraft-had not experienced that before, even with occasional experience with 'open' door on takeoff or cruise. Landed gently and under control. Callback conversation with reporter revealed the following information: the reporter stated the airplane was just out of an annual inspection where the landing gear was operated to check the work done on the emergency extension. The reporter said the nose gear control and indication wiring located on the nose gear had two wires with insulation rubbed off. The reporter stated during the nose gear retraction the wires shorted and tripped the circuit breaker for the actuators and position indication. The reporter said the technician who found the wiring fault did not indicate this to be a frequent fault on this type airplane. The reporter stated an emergency was declared and on landing emergency equipment was standing on the taxiway.
Original NASA ASRS Text
Title: A PIPER SENECA ON CLB OUT AT 2000 FT HAD LNDG GEAR FAILURE. MAIN GEAR NOT FULLY RETRACTED AND NOSE GEAR DOWN WITH NO POSITION INDICATION. CAUSED BY BARE CTL WIRING ON NOSE GEAR.
Narrative: FIRST FLT AFTER ANNUAL INSPECTION. ON CLB-OUT, NOTICED REDUCED PERFORMANCE, AND 'DOWN' NOSEWHEEL IN MIRROR. LIGHTS OUT ON PANEL INDICATING THAT GEAR HAD BEEN RAISED. CONTACTED ZZZ TWR. OVERFLEW TWR TO CONFIRM (I HAD RECYCLED GEAR-NO GREENS-AND GEAR PUMP CTL CB HAD POPPED) NOSE GEAR DOWN, MAIN GEAR NOT DOWN. EXECUTED EMER GEAR DOWN PROCEDURE. FLY OVER TWR CONFIRMED ALL GEAR DOWN. NO GEAR LIGHTS. RECYCLE OF CB WAS NOT SUCCESSFUL. WITH EXCELLENT HELP FROM TWR SET UP FOR POSSIBLE GEAR UP LNDG-TOUCH DOWN SUCCESSFUL, GEAR WAS LOCKED DOWN. STILL NO GREEN LIGHTS, CB STILL POPPED. SUBSEQUENT INSPECTION REVEALED BARE WIRES IN GEAR WELL THAT TOUCHED WHEN GEAR WAS COMING UP-SHORTED THE ELECTRICAL CIRCUIT FOR GEAR LIGHTS AND ACTUATORS, ACCORDING TO MECH. I KNEW THE GEAR HAD BEEN FULLY CHECKED FOR EMER OPERATION, AND I WAS REASONABLY CONFIDENT GEAR WAS DOWN AND LOCKED. THERE ARE 2 CB'S FOR THE GEAR CTL PUMP-ONE FOR ELECTRICAL AND ONE FOR PUMP. PUMP WAS OK, ELECTRICAL WAS POPPED. WHEN OPENING DOOR ON FINAL, WAS STARTLED BY THE EFFECT ON CTL OF ACFT-HAD NOT EXPERIENCED THAT BEFORE, EVEN WITH OCCASIONAL EXPERIENCE WITH 'OPEN' DOOR ON TKOF OR CRUISE. LANDED GENTLY AND UNDER CTL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AIRPLANE WAS JUST OUT OF AN ANNUAL INSPECTION WHERE THE LNDG GEAR WAS OPERATED TO CHECK THE WORK DONE ON THE EMER EXTENSION. THE RPTR SAID THE NOSE GEAR CTL AND INDICATION WIRING LOCATED ON THE NOSE GEAR HAD TWO WIRES WITH INSULATION RUBBED OFF. THE RPTR STATED DURING THE NOSE GEAR RETRACTION THE WIRES SHORTED AND TRIPPED THE CB FOR THE ACTUATORS AND POSITION INDICATION. THE RPTR SAID THE TECHNICIAN WHO FOUND THE WIRING FAULT DID NOT INDICATE THIS TO BE A FREQUENT FAULT ON THIS TYPE AIRPLANE. THE RPTR STATED AN EMER WAS DECLARED AND ON LNDG EMER EQUIP WAS STANDING ON THE TXWY.
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.