While in training as a B757-200 line maintenance controller; an FBO mechanic swapped an inoperative ...

Narrative:

I became aware of this issue may 2009. In february 2009; I was in training as a line maintenance B757 controller. FBO mechanic swapped main and APU batteries; due to main inoperative. I entered part number-data and company number-data for the item; I also initiated a deferred item for APU battery inop. Again part number-data and company number-data entries made. Per information in quality assurance and maintenance procedure manual; I should have done the company number-data on only one transaction. Not doing this... Company inventory system was not given correct info and thus the main battery went over time.

Original NASA ASRS Text

Title: While in training as a B757-200 Line Maintenance Controller; an FBO Mechanic swapped an inoperative main aircraft battery with the APU battery. Controller had made two separate entries in maintenance data; instead of one; which allowed the main battery to run out of time.

Narrative: I became aware of this issue May 2009. In February 2009; I was in training as a Line Maintenance B757 Controller. FBO Mechanic swapped main and APU batteries; due to main inoperative. I entered Part Number-DATA and Company Number-DATA for the item; I also initiated a deferred item for APU battery inop. Again Part Number-DATA and Company Number-DATA entries made. Per information in quality assurance and maintenance procedure manual; I should have done the Company Number-DATA on only one transaction. Not doing this... company inventory system was not given correct info and thus the main battery went over time.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	836460
Time
Date	200902
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	DC Battery
Person 1
Function	Other / Unknown
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

While in training as a B757-200 line maintenance controller; an FBO mechanic swapped an inoperative main aircraft battery with the APU battery. Controller had made two separate entries in maintenance data; instead of one; which allowed the main battery to run out of time.