Narrative:

During my normal work hours I was given an assignment to remove and replace (right & right); the #1 engine inboard (I/B) center drive unit (CDU). The aircraft was to be completed and ready for flight that evening. Work began outside the hangar; in a 100-degree sun; another co-worker was helping me change out the CDU.we referenced the B767 amm chapter 78-31-21; to remove the part and to replace it. In that maintenance manual there's references for changing out other attached components from the old CDU to the new one. While I was pre-installing the CDU to the aircraft; my partner was printing more amm references for me. I glanced through the manual he had printed for me; while installing the CDU and its components. After the CDU was installed I read through the rigging and operational check procedures for the thrust reverser (T/right). I had skimmed through the smaller components maintenance manual for operational checking also. The operational check appeared to be normal and working properly. I thought I had rigged all the parts correctly. After finally operating the T/right several times (stowing and deploying) and looking for maintenance messages in the flight deck; I signed the CDU 'ok for service' and removed the placard for it. Super tug took the airplane to the gate and was scheduled to leave later that night. The next day I was notified of an aborted takeoff for the aircraft. Left engine stopped accelerating at 83% due to the I/B CDU transducer was slightly out of rig. That transducer was one of the components transferred from the old CDU to the new one and was thought to have been rigged properly. While I remember going through the maintenance manual for the transducer rig amm 78-31-24; step-by-step action was not taken. I need to completely read the maintenance manuals and understand 100% of what I'm reading. Not to be fatigued and be in good physical health.

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Original NASA ASRS Text

Title: Two Mechanics report about their involvement with a #1 engine thrust reverser; inboard center drive unit replacement on a B767-200. The flight crew aborted takeoff after the left engine stopped accelerating at 83% percent; due to the transducer being out of rig.

Narrative: During my normal work hours I was given an assignment to Remove and Replace (R & R); the #1 engine inboard (I/B) center drive unit (CDU). The aircraft was to be completed and ready for flight that evening. Work began outside the hangar; in a 100-degree sun; another co-worker was helping me change out the CDU.We referenced the B767 AMM Chapter 78-31-21; to remove the part and to replace it. In that Maintenance Manual there's references for changing out other attached Components from the old CDU to the new one. While I was pre-installing the CDU to the aircraft; my partner was printing more AMM references for me. I glanced through the manual he had printed for me; while installing the CDU and its components. After the CDU was installed I read through the rigging and operational check procedures for the thrust reverser (T/R). I had skimmed through the smaller Components Maintenance Manual for operational checking also. The operational check appeared to be normal and working properly. I thought I had rigged all the parts correctly. After finally operating the T/R several times (stowing and deploying) and looking for maintenance messages in the flight deck; I signed the CDU 'OK for Service' and removed the placard for it. Super tug took the airplane to the gate and was scheduled to leave later that night. The next day I was notified of an aborted takeoff for the aircraft. Left engine stopped accelerating at 83% due to the I/B CDU transducer was slightly out of rig. That transducer was one of the components transferred from the old CDU to the new one and was thought to have been rigged properly. While I remember going through the Maintenance Manual for the transducer rig AMM 78-31-24; step-by-step action was not taken. I need to completely read the Maintenance Manuals and understand 100% of what I'm reading. Not to be fatigued and be in good physical health.

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.