A line mechanic reports he removed and replaced (right/right) a generator relay (gr); GR1 position; ...

Narrative:

I was assigned to remove and replace (right/right) the generator relay (gr) GR1 on an md-11 aircraft. After installation of the relay; I torqued the feeder cables and connected the generator relay plug as per aircraft maintenance manual (amm) 24-21-05-4. I then reinstalled the access panels. I documented in maintenance computer the removal and installation of the relay and left the item in work and turned over to next shift; as I had no more time to perform the operational test required per amm. The item had been closed by the aircraft maintenance technician (amt) who performed a successful run-up and test required by the amm; and released the aircraft. The aircraft flew 16-legs until five days later [on the way] to ZZZ1 where it stayed on 4-day layover. At that time; ZZZ1 updated the md-11 information system (mdis) as the relay; generator and auxiliary power adjustment and test was performed per amm 24-21-05-5; using the test box. This procedure requires disconnecting the gr plugs. Later that day; the aircraft departed ZZZ1 and flew 7-legs and a diversion to ZZZ2. [Recommend that work be] checked by a second amt.

Original NASA ASRS Text

Title: A Line Mechanic reports he Removed and Replaced (R/R) a Generator Relay (GR); GR1 position; on an MD-11 aircraft. The Relay; Generator and Auxiliary Power Adjustment and Test were performed days later; but the aircraft diverted several flights after being release from Maintenance.

Narrative: I was assigned to Remove and Replace (R/R) the Generator Relay (GR) GR1 on an MD-11 aircraft. After installation of the relay; I torqued the feeder cables and connected the Generator Relay plug as per Aircraft Maintenance Manual (AMM) 24-21-05-4. I then reinstalled the access panels. I documented in Maintenance computer the removal and installation of the relay and left the item in work and turned over to next shift; as I had no more time to perform the Operational Test required per AMM. The item had been closed by the Aircraft Maintenance Technician (AMT) who performed a successful run-up and test required by the AMM; and released the Aircraft. The aircraft flew 16-legs until five days later [on the way] to ZZZ1 where it stayed on 4-day layover. At that time; ZZZ1 updated the MD-11 Information System (MDIS) as the Relay; Generator and Auxiliary Power adjustment and test was performed per AMM 24-21-05-5; using the test box. This procedure requires disconnecting the GR plugs. Later that day; the aircraft departed ZZZ1 and flew 7-legs and a diversion to ZZZ2. [Recommend that work be] checked by a second AMT.

Data retrieved from NASA's ASRS site as of July 2013 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	1065032
Time
Date	201301
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Electrical Distribution Relay
Person 1
Function	Technician
Qualification	Maintenance Airframe Maintenance Powerplant
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

A line mechanic reports he removed and replaced (right/right) a generator relay (gr); GR1 position; on an md-11 aircraft. The relay; generator and auxiliary power adjustment and test were performed days later; but the aircraft diverted several flights after being release from maintenance.