Narrative:

Captain extended gear on 8-10 mi final, gear indications were none (no lights) for either main gear, and the red nose gear light was illuminated. Made low pass, 500 ft. Tower confirmed gear (all 3) appeared down. Captain found 2 circuit breakers out including landing gear 'air/ground relay and lights.' the circuit breakers were reset. Gear indications became normal (all green). Normal landing was made. As a precaution, emergency equipment had been called. In hindsight, we realized it was the first officer's seat that pulled the 2 circuit breakers. When the problem first occurred, we called maintenance. However, because we were certain the problem had been caused by the circuit breakers being out and that resetting the circuit breaker solved the problem, we did not make a logbook entry because nothing was broken. Supplemental information from acn 308551: the first officer's seat had been reclined in flight (cruise), and when the seat was returned to the forward position, the back of the seat had caught on the circuit breakers and had pulled them out. There was no indication on the cockpit instrumentation that a circuit breaker was out. When the gear was lowered, the safe gear indication was unpowered. Maintenance personnel indicated that a bracket needed to be installed to prevent further occurrences of this problem. They indicated that paperwork had to be generated to authority/authorized this and that it would be ok to operate the aircraft in the interim. I believe a logbook entry should have been made to insure compliance with required engineering orders and to advise future crew members of the potential for similar problems prior to the protective bracket being installed.

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Original NASA ASRS Text

Title: ACFT DESIGN PROB FO'S SEAT BACK CAN PULL CIRCUIT BREAKERS WHEN MOVING FORWARD IN THE RECLINED POS.

Narrative: CAPT EXTENDED GEAR ON 8-10 MI FINAL, GEAR INDICATIONS WERE NONE (NO LIGHTS) FOR EITHER MAIN GEAR, AND THE RED NOSE GEAR LIGHT WAS ILLUMINATED. MADE LOW PASS, 500 FT. TWR CONFIRMED GEAR (ALL 3) APPEARED DOWN. CAPT FOUND 2 CIRCUIT BREAKERS OUT INCLUDING LNDG GEAR 'AIR/GND RELAY AND LIGHTS.' THE CIRCUIT BREAKERS WERE RESET. GEAR INDICATIONS BECAME NORMAL (ALL GREEN). NORMAL LNDG WAS MADE. AS A PRECAUTION, EMER EQUIP HAD BEEN CALLED. IN HINDSIGHT, WE REALIZED IT WAS THE FO'S SEAT THAT PULLED THE 2 CIRCUIT BREAKERS. WHEN THE PROB FIRST OCCURRED, WE CALLED MAINT. HOWEVER, BECAUSE WE WERE CERTAIN THE PROB HAD BEEN CAUSED BY THE CIRCUIT BREAKERS BEING OUT AND THAT RESETTING THE CIRCUIT BREAKER SOLVED THE PROB, WE DID NOT MAKE A LOGBOOK ENTRY BECAUSE NOTHING WAS BROKEN. SUPPLEMENTAL INFO FROM ACN 308551: THE FO'S SEAT HAD BEEN RECLINED IN FLT (CRUISE), AND WHEN THE SEAT WAS RETURNED TO THE FORWARD POS, THE BACK OF THE SEAT HAD CAUGHT ON THE CIRCUIT BREAKERS AND HAD PULLED THEM OUT. THERE WAS NO INDICATION ON THE COCKPIT INSTRUMENTATION THAT A CIRCUIT BREAKER WAS OUT. WHEN THE GEAR WAS LOWERED, THE SAFE GEAR INDICATION WAS UNPOWERED. MAINT PERSONNEL INDICATED THAT A BRACKET NEEDED TO BE INSTALLED TO PREVENT FURTHER OCCURRENCES OF THIS PROB. THEY INDICATED THAT PAPERWORK HAD TO BE GENERATED TO AUTH THIS AND THAT IT WOULD BE OK TO OPERATE THE ACFT IN THE INTERIM. I BELIEVE A LOGBOOK ENTRY SHOULD HAVE BEEN MADE TO INSURE COMPLIANCE WITH REQUIRED ENGINEERING ORDERS AND TO ADVISE FUTURE CREW MEMBERS OF THE POTENTIAL FOR SIMILAR PROBS PRIOR TO THE PROTECTIVE BRACKET BEING INSTALLED.

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.