Narrative:

Aft drain mast was removed in ZZZ. Was reinspecting tape and realized no blanking plate had been installed. Tape was blown out from inside. Contacted engineering was told the blanking plate was not required because drain mast was going to reinstalled so that step from amm is not necessary. I do not believe that is the proper interpretation of the amm.

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Original NASA ASRS Text

Title: Technician reported that proper procedure was not followed when a drain mast was repaired.

Narrative: Aft drain mast was removed in ZZZ. Was reinspecting tape and realized no blanking plate had been installed. Tape was blown out from inside. Contacted engineering was told the blanking plate was not required because drain mast was going to reinstalled so that step from amm is not necessary. I do not believe that is the proper interpretation of the AMM.

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.