37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 677882 |
Time | |
Date | 200509 |
Place | |
Locale Reference | airport : zzz.airport |
State Reference | US |
Altitude | agl single value : 0 |
Environment | |
Light | Night |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | B737-700 |
Operating Under FAR Part | Part 121 |
Flight Phase | ground : maintenance |
Person 1 | |
Affiliation | company : air carrier |
Function | maintenance : technician |
Qualification | technician : airframe technician : powerplant |
ASRS Report | 677882 |
Person 2 | |
Affiliation | company : air carrier |
Function | other personnel other |
Events | |
Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far |
Resolutory Action | none taken : detected after the fact |
Factors | |
Maintenance | contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : repair |
Supplementary | |
Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication Flight Crew Human Performance |
Primary Problem | Chart Or Publication |
Situations | |
Publication | MEL |
Narrative:
On sep/tue/05; I was assigned aircraft with a service check; chip detection #1 inspection; WX radar antenna doubler and MEL on standby rudder 'on' light. Having completed all work; I troubleshot the MEL to a bad R-21 relay on back of P-5 overhead flight control panel. Replacing the relay corrected the problem. I signed off and cleared the MEL (reference page X). Being unfamiliar with specific MEL; I did not know the flight force monitor breaker on P6-2 panel had been pulled and collared. The MEL sticker in logbook made no mention of sp-2 and maintenance control did not mention breaker when called to clear MEL. Also; there is no cockpit indication that would show breaker out during operations check. I released aircraft to service and not until nov/thu/05 did a crew call in the breaker.
Original NASA ASRS Text
Title: A B737-700 WAS DISPATCHED AFTER REPAIR OF A DEFERRED 'RUDDER PWR ON' LIGHT. AIRPLANE WAS OPERATED 60 DAYS WITH THE FLT FORCE MONITOR CIRCUIT BREAKER PULLED AND COLLARED PER THE MEL SPECIAL PROCS.
Narrative: ON SEP/TUE/05; I WAS ASSIGNED ACFT WITH A SVC CHK; CHIP DETECTION #1 INSPECTION; WX RADAR ANTENNA DOUBLER AND MEL ON STANDBY RUDDER 'ON' LIGHT. HAVING COMPLETED ALL WORK; I TROUBLESHOT THE MEL TO A BAD R-21 RELAY ON BACK OF P-5 OVERHEAD FLT CTL PANEL. REPLACING THE RELAY CORRECTED THE PROB. I SIGNED OFF AND CLRED THE MEL (REF PAGE X). BEING UNFAMILIAR WITH SPECIFIC MEL; I DID NOT KNOW THE FLT FORCE MONITOR BREAKER ON P6-2 PANEL HAD BEEN PULLED AND COLLARED. THE MEL STICKER IN LOGBOOK MADE NO MENTION OF SP-2 AND MAINT CTL DID NOT MENTION BREAKER WHEN CALLED TO CLR MEL. ALSO; THERE IS NO COCKPIT INDICATION THAT WOULD SHOW BREAKER OUT DURING OPS CHK. I RELEASED ACFT TO SVC AND NOT UNTIL NOV/THU/05 DID A CREW CALL IN THE BREAKER.
Data retrieved from NASA's ASRS site as of January 2009 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.