Fuel Flashcards
Maximum total fuel allowed?
41,814lbs
Maximum center tank fuel?
14,274lbs
Maximum Inner tanks fuel?
12,270lbs X 2
Maximum outer tanks fuel?
1500lbs X 2
Minimum fuel quantity for take off?
3,307lbs
Maximum imbalance between 2 outer tanks (inner tanks balanced) at take off?
815lbs
Fuel density?
6.551 lb/US Gal.
How much is the fuel consumption for 2 engines in an hour and in minutes?
5,300 lbs per hour or 88 lbs per minute
How much is the fuel consumption of one engine in an hour and per minute?
2,650 lbs / hour or 44 lbs a minute
How much fuel does the APU consume per hour and per minute?
280 lbs/hr and 5 lbs a minute
How to compute for required fuel in traffic?
- 5 mins x # of aircraft ahead = mins
- Multiply mins by 88lbs/min (or 44lbs/min for OEI) = Fuel required
- Fuel required + Diversion Fuel = Final Required Fuel
- Compare with FOB and MCDU Fuel Prediction
Compute for time with traffic, if early, delayed or on sked
- 5 mins x number of aircraft ahead = Mins,
- Add Mins to ETA on MCDU flight plan = New ETA
- Compare with paper scheduled flight plan ETA vs New ETA to determine if delayed, early or on sked
What is the formula to convert kg to pound?
Kg x 2.205 = lb
When do the outer tanks start transfering to the inner tanks?
When each inner tank reaches 1650lbs (1,650lbs x 2 = 3300lbs total for both tanks) so 3,300 + 3,000 (2 outer tanks) = 6,300 lbs
How are fuel used first in flight?
Aircraft in clean configuration, Center tank, then inner. When the inner tanks pass (1650lbs x 2 or 3,300lbs for both inner tanks), the outer tanks open and spill into the inner tanks.
