vipin Posted July 18, 2015 Share Posted July 18, 2015 Why is it required to strap the ECBs of HF radios during jacking up of aircraft? Is the HF power distribution is connected to the weight on wheel circuit? Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted July 21, 2015 Share Posted July 21, 2015 So many configurations now anything is possible. If this is a requirement for your aircraft ask your COM/NAV shop to look at the wiring diagram. That will be the only real way to know why... Quote Link to comment Share on other sites More sharing options...
tinyclark Posted July 30, 2015 Share Posted July 30, 2015 (edited) I don't know what kind of C-130 you are working on, but no USAF aircraft that I know of has ever had the HF radio tied into the WOW circuit. My out of date jacking book doesn't show pulling the breakers. I remember they had to be strapped to go into a hangar to prevent the HF radios from transmitting.There doesn't seem to be a rhyme or reason for some systems to be secured. All it takes is one incident and the engineering staff will put something in the book to prevent it from happening again. Even if the HF wiring went through the WOW circuit wiring, there's no way it would cause it to transmit without hitting a MIC switch.All of this being said, I've been retired for four years. Maybe it was decided that the HF shouldn't be able to transmit on the ground at all for safety reasons. That would mean that the WOW switch would have to be jumpered to enable an Op Ck. As Natops1 said, check with your radio guys. Edited July 30, 2015 by tinyclark Quote Link to comment Share on other sites More sharing options...
AMPTestFE Posted August 3, 2015 Share Posted August 3, 2015 "ECBs" kind of gives that one away, doesn't it guys? Quote Link to comment Share on other sites More sharing options...
tinyclark Posted August 5, 2015 Share Posted August 5, 2015 ????? Quote Link to comment Share on other sites More sharing options...
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