B737 Undifferentiated or Other Model
Communication Breakdown; Situational Awareness; Training / Qualification
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Aircraft; Chart Or Publication; Human Factors; Manuals; Procedure
Found weather radar 'On' and running in the hangar. Per reference [Aircraft Maintenance Manual (AMM)] 34-43-00-040 Procedure it states; do not move the thrust lever. The movement of the thrust lever can cause automatic operation of the Predictive Windshear System. This can cause injury to persons and damage to equipment in the area of the nose radome.We need documentation to protect workers from this health hazard. Pulling Radar [Circuit Breaker C/B] should be required before maintenance is performed. Most are not aware of this hazard.
An Aircraft Maintenance Technician (AMT) reports finding a B737 weather radar unit 'On' and running in the hangar during aircraft maintenance. Technician noted the need for documentation to protect workers from the health hazards of radar operations should also include pulling the Radar Circuit Breaker (C/B) before maintenance is performed.