Maintenance Airframe; Maintenance Powerplant
Situational Awareness; Distraction
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Other / Unknown
General Maintenance Action
Human Factors; Aircraft
While performing the Installation Inspection of a slide replacement for a Boeing B777 at ZZZ Maintenance Hanger; Spot X area; I armed [Cabin] Door-2R (2-Right) to make sure all arm/disarm indications showed proper positions. In the instant from arming the door; looking [down] at the lower door Indicators and performing the door Operational Check for smooth operation; clearance; and verify proper [door] bustle installation and workmanship; I moved the door handle slightly before remembering to disarm the door; which inadvertently blew the slide.
A Line Inspector describes how he inadvertently deployed a door slide at Cabin Door 2-Right on a B-777 aircraft during verification of the slide installation.