Right thrust reverser was deferred by line maintenance on a B757-200. After pushback; the flight cre...

Attributes
ACN	811937
Time
Date	200811
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	811937
Events
Anomaly	maintenance problem : non compliance with mel maintenance problem : improper maintenance
Independent Detector	other flight crewa
Resolutory Action	other
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Upon arriving at aircraft for flight; previous crew had a write-up about right thrust reverser and maintenance was on the scene. Aircraft was loaded with 151 passenger. Station maintenance was the last one off aircraft after securing all details pertinent to MEL. This included locking out the right thrust reversers and pulling and collaring circuit breakers. Logbook was signed off and aircraft was cleared for flight. While taxiing out from gate; first officer was questioning the circuit breakers that were pulled by station maintenance. Aircraft was stopped on an inactive taxiway and a call to dispatch as well as maintenance control was made. I; as captain; discussed the problem with maintenance control as well as looking at the MEL and determined that maintenance had pulled the wrong breakers and collared them. With maintenance control direction; I removed the collars on the wrong circuit breaker; rearmed them; and proceeded to pull the correct breakers and collar these. We resumed the flight without further incidence. Mechanic was locating circuit breaker by description instead of location number even with a copy of the MEL page in his hand. Possible problem in training and a lack of backup help in maintenance; buddy system.

Original NASA ASRS Text

Title: RIGHT THRUST REVERSER WAS DEFERRED BY LINE MAINTENANCE ON A B757-200. AFTER PUSHBACK; THE FLIGHT CREW NOTICES INCORRECT CIRCUIT BREAKERS COLLARED; COORDINATES WITH MAINTENANCE CONTROL AND RESOLVES THE SITUATION.

Narrative: UPON ARRIVING AT ACFT FOR FLT; PREVIOUS CREW HAD A WRITE-UP ABOUT R THRUST REVERSER AND MAINT WAS ON THE SCENE. ACFT WAS LOADED WITH 151 PAX. STATION MAINT WAS THE LAST ONE OFF ACFT AFTER SECURING ALL DETAILS PERTINENT TO MEL. THIS INCLUDED LOCKING OUT THE R THRUST REVERSERS AND PULLING AND COLLARING CIRCUIT BREAKERS. LOGBOOK WAS SIGNED OFF AND ACFT WAS CLRED FOR FLT. WHILE TAXIING OUT FROM GATE; FO WAS QUESTIONING THE CIRCUIT BREAKERS THAT WERE PULLED BY STATION MAINT. ACFT WAS STOPPED ON AN INACTIVE TXWY AND A CALL TO DISPATCH AS WELL AS MAINT CTL WAS MADE. I; AS CAPT; DISCUSSED THE PROB WITH MAINT CTL AS WELL AS LOOKING AT THE MEL AND DETERMINED THAT MAINT HAD PULLED THE WRONG BREAKERS AND COLLARED THEM. WITH MAINT CTL DIRECTION; I REMOVED THE COLLARS ON THE WRONG CIRCUIT BREAKER; REARMED THEM; AND PROCEEDED TO PULL THE CORRECT BREAKERS AND COLLAR THESE. WE RESUMED THE FLT WITHOUT FURTHER INCIDENCE. MECH WAS LOCATING CIRCUIT BREAKER BY DESCRIPTION INSTEAD OF LOCATION NUMBER EVEN WITH A COPY OF THE MEL PAGE IN HIS HAND. POSSIBLE PROB IN TRAINING AND A LACK OF BACKUP HELP IN MAINT; BUDDY SYSTEM.

Data retrieved from NASA's ASRS site as of May 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.

Right thrust reverser was deferred by line maintenance on a B757-200. After pushback; the flight crew notices incorrect circuit breakers collared; coordinates with maintenance control and resolves the situation.