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B737 Fuel Indication - Classic 737!  
User currently offlineCdfmxtech From United States of America, joined Jul 2000, 1341 posts, RR: 24
Posted (15 years 4 months 3 weeks 2 days ago) and read 3308 times:

Do the repeaters (Refueling panel fuel gauges)...get an input from the applicable tank bussing plug.
In the schematics, it shows the repeaters getting an input from the bussing plug...but the MX manual makes it sound as if the repeaters only get an input from the main fuel gauges.

Please..if you're not sure, don't respond!!

3 replies: All unread, jump to last
User currently offlineNKP S2 From United States of America, joined Dec 1999, 1714 posts, RR: 5
Reply 1, posted (15 years 4 months 3 weeks 1 day 23 hours ago) and read 3263 times:

As far as ATA 28 is concerned, I'm getting hazier on the -200 as time passes, but the 300/400 I'm more sure of. ---- The digital fuel quantity cockpit indicators are not just indicators, but processors as well...getting all pertinent stuff ( Hi Z, Low Z, Compensator.. blah blah blah ) from it's own tank harness bussing plug and processing it to a readout of quantity. The fueling panel indicators are, as you surmised, "repeaters" of info from the cockpit indicators. --- BTW; Time sure must be passing quickly, as it sounds presumptive to my ears to call the -300/400/500 series "classic". I still consider them relatively new planes! I'm still in my 30's and it makes me feel like I'm getting old 

User currently offlineCdfmxtech From United States of America, joined Jul 2000, 1341 posts, RR: 24
Reply 2, posted (15 years 4 months 3 weeks 1 day 14 hours ago) and read 3239 times:

Thanx for the help!!

User currently offlineBuzz From United States of America, joined Nov 1999, 697 posts, RR: 20
Reply 3, posted (15 years 4 months 1 week 6 days 5 hours ago) and read 3194 times:

Hi Cdfmxtech,Buzz here. OK, do you mean the -200 or -300 Guppies?
They both repeat the cockpit gauges, we're not supposed to install an underwing gauge in the cockpit.
Let's see, the "classic" swinging needle version doesn't have the processor (as NKP S2 said) and ours have an LCD read out. I don't miss tweaking the gauges on the classics, and bending over to tweak the trimmers on the bottom of the pedestal isn't as easy as it used to be on our 300/500's.
Buzz Fuselsausage: Line Mechanic by night, DC-3 Crew Chief by choice.

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