B737-8 technician reported not replacing a gasket on an oil line during an oil cooler replacement.

Attributes
ACN	1742275
Time
Date	202005
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Component
Aircraft Component	Oil Cooler
Person 1
Function	Other / Unknown
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

Removing and replacing no. 2 engine fuel oil cooler; when reinstalling line that was not removed but loosened and moved out of way; did not inspect gasket or remove and replace gasket; sure I tightened all lines; leak checked at idle while running did not see any leaks.

Original NASA ASRS Text

Title: B737-8 Technician reported not replacing a gasket on an oil line during an oil cooler replacement.

Narrative: Removing and replacing No. 2 engine fuel oil cooler; when reinstalling line that was not removed but loosened and moved out of way; did not inspect gasket or remove and replace gasket; sure I tightened all lines; leak checked at idle while running did not see any leaks.

Data retrieved from NASA's ASRS site 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.