A line mechanic reports there were 12 damaged ball mat transfer rollers in the forward pit on a B767...

Narrative:

A B767-200 aircraft had 12 damaged rollers; on the ball transfer unit's (btu's); in the forward cargo ball mats preventing loading of containers. There are 2 varying deferrals for ball mat rollers. Non-essential function (nef) 25-50B; allows up to 4 rollers missing per ball mat; while carrier repair document allows 6 missing rollers. I used the repair document reference and contacted maintenance control for a work authorization on the subject. Either modify the repair document; or nef; to reflect matching limits.

Original NASA ASRS Text

Title: A Line Mechanic reports there were 12 damaged ball mat transfer rollers in the forward pit on a B767-200 aircraft. Two varying deferrals for ball mat rollers exists that do not reflect matching limits.

Narrative: A B767-200 aircraft had 12 damaged rollers; on the ball transfer unit's (BTU's); in the forward cargo ball mats preventing loading of containers. There are 2 varying deferrals for ball mat rollers. Non-essential function (NEF) 25-50B; allows up to 4 rollers missing per ball mat; while carrier repair document allows 6 missing rollers. I used the repair document reference and contacted Maintenance Control for a work authorization on the subject. Either modify the repair document; or NEF; to reflect matching limits.

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	839304
Time
Date	200906
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B767-200
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Cargo Equipment
Person 1
Function	Technician
Events
Anomaly	Aircraft Equipment Problem Less Severe

A line mechanic reports there were 12 damaged ball mat transfer rollers in the forward pit on a B767-200 aircraft. Two varying deferrals for ball mat rollers exists that do not reflect matching limits.