A lead mechanic reports he instructed another mechanic to do a blind oil fill on a B757-200 #2 engin...

Narrative:

Crew called requesting oil service for #2 engine due to EICAS reading 7 quarts static. Since flight crews will not do maintenance runs; I had the mechanic do a blind addition of oil. I did not ask the crew to run for me. He added 14 quarts. It did not generate a red alert automated log in the maintenance computer. The crew ran engine for 10 minutes prior to taxi out with no leaks or problems. EICAS was at 23 quarts. 20 minutes after takeoff; #2 engine overtemped at 170 degrees centigrade and was brought to flight idle. Aircraft returned to ZZZ emergency declared. Engine was not shut down. I suspected a weak scavenge pump and called out an item to replace unit in ZZZ1. I think my blind addition of oil caused an over-service condition and contributed to the high oil temperature.

Original NASA ASRS Text

Title: A Lead Mechanic reports he instructed another mechanic to do a blind oil fill on a B757-200 #2 engine; that had a crew call showing only 7-quarts static on EICAS at the gate. Mechanic added 14 quarts of oil. Engine overtemped after takeoff and returned to field.

Narrative: Crew called requesting oil service for #2 engine due to EICAS reading 7 quarts static. Since flight crews will not do maintenance runs; I had the Mechanic do a blind addition of oil. I did not ask the crew to run for me. He added 14 quarts. It did not generate a red alert automated log in the maintenance computer. The crew ran engine for 10 minutes prior to taxi out with no leaks or problems. EICAS was at 23 quarts. 20 minutes after takeoff; #2 engine overtemped at 170 degrees Centigrade and was brought to flight idle. Aircraft returned to ZZZ emergency declared. Engine was not shut down. I suspected a weak scavenge pump and called out an item to replace unit in ZZZ1. I think my blind addition of oil caused an over-service condition and contributed to the high oil temperature.

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	825312
Time
Date	200902
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B757-200
Flight Phase	Parked
Component
Aircraft Component	Powerplant Lubrication System
Person 1
Function	Lead Technician
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural FAR Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy

A lead mechanic reports he instructed another mechanic to do a blind oil fill on a B757-200 #2 engine; that had a crew call showing only 7-quarts static on EICAS at the gate. Mechanic added 14 quarts of oil. Engine overtemped after takeoff and returned to field.