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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.
| Attributes | |
| ACN | 1271618 |
| Time | |
| Date | 201506 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Weather Radar |
| Person 1 | |
| Function | Technician |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
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.
Original NASA ASRS Text
Title: 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.
Narrative: 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.
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.