fuel calculation and TFRs

preid

Member
Joined
Jan 22, 2010
Messages
754
Location
SoCal
first off- I LOVE how TFR's for permanent locations (Disneyland) have been added to the databases for those who dont have ADS-B. Huge for me in my very congested airspace.
Second- I can not figure out why my ft-60 fuel flow calculation has changed where I am off by 1 gallon per 60 gallon comparisons now. Did anything change that should require me to recalculate the fuel flow (again)?
thx
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
Thanks - glad the stadium TFR database is proving useful to you. There were a few fits and starts to get it incorporated into SkyView. We include it as a database because stadium TFRs are no longer included in the ADS-B broadcasts.

In Tech Support, we've observed from customers that the fuel flow sensors can change their "K-factor" over time. It makes sense - it's a small impeller with fuel rushing through it, lots of fuel, many hours... small particles can build up in it slowing down the impeller, etc.

When there's an issue with the fuel flow sensor, we recommend:
1. Remove it from the fuel system
2. Set it aside on a bench to let it thoroughly dry out (days)
3. Tap it GENTLY onto a bench. If you do this on a paper towel, you'll be able to see any particles that get shaken out. Inspect it for any internal damage - bent impeller blades, any gunk built up on the impeller blades, etc.
4. Reinstall it into the fuel system.
5. Observe the fuel flow.

first off- I LOVE how TFR's for permanent locations (Disneyland) have been added to the databases for those who dont have ADS-B. Huge for me in my very congested airspace.
Second- I can not figure out why my ft-60 fuel flow calculation has changed where I am off by 1 gallon per 60 gallon comparisons now. Did anything change that should require me to recalculate the fuel flow (again)?
thx
 
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