Two line mechanics performed a PCU operational check to satisfy a continuing MEL 27-21-00 deferral f...

Attributes
ACN	944282
Time
Date	201104
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Rudder Control System
Person 1
Function	Technician
Qualification	Maintenance Powerplant Maintenance Airframe
Person 2
Function	Technician
Qualification	Maintenance Powerplant Maintenance Airframe
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

Deferred item XXX [maintenance procedure (M/P)] was called out [to be accomplished] on aircraft X; a B757-200 aircraft located at terminal gate xx. I complied with the maintenance requirement in MEL chapter 27-21-00; but on aircraft Y; a different B757-200 aircraft located on an adjoining terminal gate. I signed-off complied with deferred item maintenance procedure and sent the maintenance release to aircraft X. After questioning by the flight crew of aircraft X; whether they had the correct maintenance release; I realized my error and then performed M/P required on aircraft X. A new maintenance release was sent to aircraft X; before brakes were released at the gate. Situations sometimes occur when an individual is assigned multiple gates with similar aircraft types at same times.

Original NASA ASRS Text

Title: Two Line mechanics performed a PCU operational check to satisfy a continuing MEL 27-21-00 deferral for a B757-200 aircraft. Mechanics realized they had completed the PCU check on the wrong B757 after the Captain questioned whether he had the correct maintenance release.

Narrative: Deferred Item XXX [Maintenance Procedure (M/P)] was called out [to be accomplished] on Aircraft X; a B757-200 aircraft located at terminal Gate XX. I complied with the maintenance requirement in MEL Chapter 27-21-00; but on Aircraft Y; a different B757-200 aircraft located on an adjoining terminal gate. I signed-off complied with Deferred Item Maintenance Procedure and sent the Maintenance Release to Aircraft X. After questioning by the flight crew of Aircraft X; whether they had the correct Maintenance Release; I realized my error and then performed M/P required on Aircraft X. A new Maintenance Release was sent to Aircraft X; before brakes were released at the gate. Situations sometimes occur when an individual is assigned multiple gates with similar aircraft types at same times.

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.

Two line mechanics performed a PCU operational check to satisfy a continuing MEL 27-21-00 deferral for a B757-200 aircraft. Mechanics realized they had completed the PCU check on the wrong B757 after the captain questioned whether he had the correct maintenance release.