EMB ERJ 170/175 ER/LR
Maintenance Airframe; Maintenance Powerplant
Communication Breakdown; Situational Awareness; Training / Qualification
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Human Factors
Inspecting the [Cabin] Door 2-Right (R2) for Leak Check and discovered the plunger on the Pneumatic Assembly was previously locked out for [maintenance] servicing; preventing the Door [Emergency] Assist from performing properly should an emergency arise and the door slide activated. The individual that serviced the Door Assist [actuator] is apparently unaware that this lockout should be put back in the 'Normal' position after completion of servicing procedure.  [Recommend] to make the servicing of the Door Assist Assembly a Required Inspection Item (RII) so it requires an inspection due to the severity of the impact should the system be needed. Maintenance Supervisor.  Gate.
A Line Maintenance Supervisor discovers the actuating plunger on the Pneumatic Assembly for Door-2 Right Emergency Assist on an ERJ-170 aircraft was still locked-out from previous Maintenance servicing. The lock-out condition prevented door assist during door slide activation. Supervisor recommends any servicing of Door Assist include a Required Inspection Item (RII) prior to aircraft release.