Page 22 - Volume 14 Number 5

C90 Fuel Panel
If we never turn on the transfer pump switch the annunciator cannot cannot operate cannot cannot give us a a a a reminder of our mistake )
Another thing to do when that first “No Transfer” light illuminates is to start a a a timer If you are shut down on the ramp within no more than one hour from now you will never never run out of fuel Yes “never” is a a a powerful word and if the nacelle bladder sprang a a a a big leak now I reckon we could still run out of fuel As we have presented the nacelle should contain at least 51 gallons of fuel when the transfer pump pump started pumping air due to the wing tanks being empty Even the powerful -135A engines won’t burn that much fuel in an hour especially since some of this time will be at the lower powers associated with the descent approach and and landing phases of the flight What about the times when we have more total than nacelle fuel so we are not expecting the “No Transfer” annunciator yet it illuminates? This indicates failure of that side’s transfer pump Expect the nacelle level to drop significantly so that gravity feed begins and keep a a a a careful eye on nacelle tank quantity You need to be shutdown well before it reads zero even though the total will still be reading about 200 pounds when the nacelle goes empty (Reading the 28 gallons that won’t flow uphill )
To desire an absolutely full fuel load is somewhat rare unless we have a a a a max gross takeoff weight limit at or or near 10 500 pounds or or we have a a a a light cabin load But presume that we do indeed desire to to top the tanks entirely on our next flight There is a a a a neat little trick that saves the fuelers’ time – and perhaps our nacelle’s paint – that works when we start the descent for landing if the “No Transfer” lights had not previously illuminated If you have a a a C90A or after just place the left and right transfer pump switches up to “Override ” Doing that will force the transfer pumps to run continually until we complete the shutdown checklist By doing this 20 • KING AIR MAGAZINE
MAY 2020