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  #21  
Old 11-28-2022, 08:49 AM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 8,041
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Quote:
Originally Posted by dmattmul View Post
This my electrical display on the G3X. Any thoughts on adding a master warning (Red alarm) or master caution (Yellow alarm) to a led in plain sight on the panel? (Future RV-10 in progress)
There are ground sink connections for both master warning and master caution. Run 12V to an led (12V style, not stock LEDs) or incandescent lamp and then to these pins and you will have annunciation lamps. Best if the 12V source comes from the dimmer buss.

Larry
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N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
  #22  
Old 11-28-2022, 10:50 AM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 4,188
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Glad you made it home safe and thanks for sharing the LESSONS
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N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - SOLD
N258SM RV14A - IO390EXP119 - Out of Paint shop & flying
Dues paid
  #23  
Old 11-28-2022, 10:59 AM
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avrojockey avrojockey is offline
 
Join Date: Aug 2019
Location: Appleton, WI
Posts: 557
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Great write up, great job IMO...lessons learned.

I have and electric dependent IFR bird and decided on a IBBS and isolatable Essential Bus...no backup alternator. The design involved a bunch of load research. I was surprise how little amperage the G3X LRUs pull. The biggest draw was going to be the COM during transmit, I decided to leave this out as I carry a handheld backup. I have the small TCW IBBS (3ah) and it lasts 1-hour with all screens on bright, IAW their CA docs ...that means a healthy 16ah PC680 should last over 5 hours or fuel exhaustion.
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Appleton, WI
RV-9A N904DC
2023 Dues Paid

Last edited by avrojockey : 11-28-2022 at 11:05 AM.
  #24  
Old 11-28-2022, 12:28 PM
RV7A Flyer's Avatar
RV7A Flyer RV7A Flyer is offline
 
Join Date: Jul 2013
Location: US
Posts: 2,874
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Quote:
Originally Posted by Ed_Wischmeyer View Post
Pleasant phone call and email (below) from the FAA. Theyíre just doing their follow up. The lady who called is from the maintenance side. Iíll pull the cowling later today and see if thereís something obvious.

The following notification by the Regional Operations Center was received by the ATL FSDO: SAVANNAH, GA (SAV): N7152Y, RV9A, REPORTED ELECTRICAL PROBLEMS AND CONTINUED TO SAV. LANDED WITHOUT INCIDENT. 11/26/2022 1727Z
In order to close the occurrence, we are requesting the following information:
1. A signed written statement of events from the Pilot in Command (PIC)
2. A copy front and back of the PICís airman certificate with current medical
3. A copy of the maintenance record entry returning the aircraft to service
I can be reached by email with any questions.
You should probably also file an ASRS, just to cover all the bases.
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  #25  
Old 11-28-2022, 12:34 PM
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rv7boy rv7boy is offline
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Location: Austinville, Alabama
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Default ASRS Report

Quote:
Originally Posted by RV7A Flyer View Post
You should probably also file an ASRS, just to cover all the bases.
Already done. See last two lines of OPís first post.
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RV-7 Wings
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"Certainly, travel is more than the seeing of sights;
it is a change that goes on, deep and permanent, in the ideas of living." Miriam Beard
  #26  
Old 11-28-2022, 12:51 PM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
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Quote:
Originally Posted by avrojockey View Post
Great write up, great job IMO...lessons learned.

I have and electric dependent IFR bird and decided on a IBBS and isolatable Essential Bus...no backup alternator. The design involved a bunch of load research. I was surprise how little amperage the G3X LRUs pull. The biggest draw was going to be the COM during transmit, I decided to leave this out as I carry a handheld backup. I have the small TCW IBBS (3ah) and it lasts 1-hour with all screens on bright, IAW their CA docs ...that means a healthy 16ah PC680 should last over 5 hours or fuel exhaustion.
Just a reminder that if IBBS is wired per diagram, if/when the alternator fails, then the primary battery will be feeding the avionics with electron if the pass thru have been wired unless you have a way of isolating/shutting down the pass-thru. The end result of this would be that if you are expecting your main battery is your reserve and to work after the IBBS, that may not be the case.
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Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - SOLD
N258SM RV14A - IO390EXP119 - Out of Paint shop & flying
Dues paid
  #27  
Old 11-28-2022, 01:08 PM
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RV7A Flyer RV7A Flyer is offline
 
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Quote:
Originally Posted by rv7boy View Post
Already done. See last two lines of OPís first post.
Ah, yeah, I missed that. Was reading the OP late, late last night, so just blazed right on by that. Anyway, a good reminder that it can never hurt to file one.
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  #28  
Old 11-28-2022, 01:11 PM
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Ed_Wischmeyer Ed_Wischmeyer is offline
 
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Location: Savannah, GA
Posts: 1,830
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Pulled the cowling. Fan belt appears okay, no obvious loose/broken wires. Time to call in the A&PsÖ
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Previously RV-4, RV-8, RV-8A, AirCam, Cessna 175
ATP CFII PhD, so I have no excuses when I screw up
  #29  
Old 11-28-2022, 02:34 PM
BruceW BruceW is offline
 
Join Date: Aug 2005
Location: Elk Grove, CA
Posts: 301
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What make of alternator, please ???
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RV-1 Mockingbird rebuild, 1997
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RV-14 working the tail
Elk Grove, CA
  #30  
Old 11-28-2022, 03:00 PM
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Walt Walt is online now
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
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Quote:
Originally Posted by BruceW View Post
What make of alternator, please ???
I'm willing to bet it was either an auto unit or PP?
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EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags, MTV-9 prop
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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