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A ramp guy at BWI asked why I kept pulling the same breaker, and it hit me
Last Tuesday I was tracing a ghost fault on an old 737 and swapped two LRUs before I finally sat down with the wiring diagram like I should have from the start. A ramp guy walked by and asked why I kept resetting the same breaker instead of reading the fault codes first, and honestly he was right. I slowed down and found a chafed wire behind the panel in about 20 minutes. Why do we always reach for the parts cannon before the manual? Curious how you all break that habit.
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ramirez.sage15d ago
Check the wire diagram first even when it feels slow, because nine times out of ten the fault is a rubbed wire or a loose pin and not the box. I made a rule for myself: no parts swap until I've traced power and ground to the thing that's actually dead. Sounds dumb but writing the fault code on a sticky and taping it to the panel keeps me from running in circles.
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