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Aero Precision provides military aviation aftermarket solutions for c-130
Doo

VOR inoperative

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Hello guys, we’ve been having the NAV flag on the #1 HSI in view. Both receivers were changed as well as the switching relays. the antenna was removed, cleaned and reinstalled, yet there wasnt any improvement.however, after the removal and reinstallation of some of the switching relays, both #1&2 NAV flags remain in view. . Kindly help suggest a solution.

Edited by Doo
Correction

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On 10/20/2018 at 2:53 PM, larry myers said:

OK, Tiny. Tell them how to fix it.

LMAO, Larry.

What system is this? What year and model?

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The connector to one of the blade antennas on the vertical stabilizer was found removed. Connector tightened back and system checked and found ok. Apparently,  there was no signal from one of the 2 antennas to the receiver.

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The lack of signal wouldn't have affected the VOR, I don't think. It is possible the system was picking up noise or the lack of load on the receiver antenna connector caused a fault. One side being off certainly should have screwed up the localizer.

 

Good find, guys.

Edited by tinyclark

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