Requirements Flashcards
Fuel systems of aircraft certified or registered in the US must meet requirements according to what?
14 CFR Part 23 of the Federal Aviation Regulations.
How must fuel systems be constructed? What must they ensure?
Fuel systems must ensure the flow of fuel at the proper rate and pressure established for proper engine and auxiliary power unit functioning under all likely operating conditions.
A pump must be able to draw fuel from more than one fuel tank simultaneously. Yes or no?
No. A fuel system mustn’t be arranged so that a pump can draw fuel from more than one tank at a time.
Turbine powered aircraft must be able to operate with how many cubic centimeters of free water per gallon of fuel at 80 degrees Fahrenheit.
0.75 cubic centimeters of free water per gallon of fuel at 80 degrees Fahrenheit. A turbine engine must also be capable of sustained operation when fuel is cooled to its most critical point for icing.
Each fuel system of a multi-engine aircraft must be arranged so that the failure of any one component except ____, will not result in the loss of power of more than one engine or require the immediate action by the pilot to prevent the loss of power.
Fuel tank.
In an aircraft with multiple engines that has a single fuel tank or an assembly of multiple interconnected tanks, each engine must have what?
Each engine must have an independent tank outlet along with a fuel shutoff valve at the tank.
Where should the fuel shutoff valve never be located?
On the engine side of a firewall.
Normal category aircraft must provide a way for crew-members to do what to to the fuel?
On normal category aircraft there must be a way for the crew-members to rapidly shutoff the fuel.
On multi-engine aircraft the closing of an individual fuel shutoff valve shall not affect what?
The fuel supply to the other engines.
How many tanks in an arrangement where it is unlikely that they both become clogged are required on a multi-engine aircraft.
Two.
How must filler caps be designed?
Filler caps must be designed in a way where they cannot be installed incorrectly or lost in flight.
Regarding lightning, how must fuel systems be designed?
Fuel systems must be designed in a way that prevents lightning from igniting the fuel vapors.
In a gravity-fed system, a fuel tank contains the minimum amount of fuel allowed. What should the flow rate be in such a condition. The rate is also the same when the airplane is in the attitude that is most critical for fuel flow.
The flow rate should be 150% of the takeoff fuel flow.
In a reciprocating engine with a pump-feed fuel system, what must the flow rate be?
The flow rate should be 125% of takeoff fuel flow.
If an aircraft has a selector valve, which enables an engine to operate from more than a single fuel tank. The system must not cause a loss of power for more than ____ in a single engine aircraft, and ____ for a multi-engine aircraft.between the time one tank runs dry before the other tank supplies more fuel.
10 seconds for a single engine aircraft, and 20 seconds for an aircraft with multiple engines.
