Topics in Category: Falcon 50 - Rotate.Aero http://rotate.aero Wed, 24 Jan 2018 09:58:27 +0000 MYOB /media/kunena/images/icons/rss.png Topics in Category: Falcon 50 - Rotate.Aero en-gb ATA 34-20, Falcon 50 Standby Horizon - by: Mark http://rotate.aero/forum/f50-navigation/70-ata-34-20-falcon-50-standby-horizon#82 http://rotate.aero/forum/f50-navigation/70-ata-34-20-falcon-50-standby-horizon#82 ATA 34 Navigation Fri, 13 Feb 2015 01:24:11 +0000 ATA 24-20, Falcon 50 Electrical Power - by: Mark http://rotate.aero/forum/ata-24-electric-power-f50/67-ata-24-20-falcon-50-electrical-power#69 http://rotate.aero/forum/ata-24-electric-power-f50/67-ata-24-20-falcon-50-electrical-power#69



Swapped cards 14X1 and 14X2, no help.
Swapped cards 401J and 402J, no help.
Swapped relays 4X1 and 4X2, again..... no help.


(Jumpseat removed to gain access to right junction area.)

Dropped overhead and shot switch, both contacts good.


(3X1 shown, 3X2 just to the right, but out of picture)


Pulled card 14X2 and grounded pin 6, annunciator went out. This proved that power through diode and card 402J was good.

Also verified that 115VAC and 26VAC outputs were good (at least with meter).

Swapped inverters (that were NOT in nose and NOT under rear cockpit floor, but behind the galley, major pain in the ass to find).
The problem followed.

Even though the #2 A/C bus was powered, the indicator showing 115VAC, and my meter also showing good voltage...... the inverter output did not satisfy card 14X2 as being good. Possibly an o-scope might of shown a signal problem, but this problem was quite perplexing because everything was showing to be good.

Falcon 50, ATA 24-20
Wiring Manual 24-20-00
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ATA 24 Electrical Power Thu, 08 Jan 2015 17:49:10 +0000