Commercial Fixed Wing
Maintenance Airframe; Maintenance Powerplant
Maintenance Lead Technician 10; Maintenance Technician 13
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Gate; General Maintenance Action
Aircraft; Human Factors; Environment - Non Weather Related
Applying MEL for #2 engine anti-ice valve to be locked open. Due to the rain and wearing a mask; glasses fogged and missed the step to unplug the pressure switch.Suggestions - Remove mask so glasses will not fog. Get somewhere the rain will not affect tablet usage. Functionality and readability.
Technician reported missing a step to unplug the pressure switch while working on the engine anti-ice valve to be locked open.