Maintenance and Inspection Procedures Manual
Type:
CT
Series:
CTLS
LSA
Page: 6-4
AF 04800001
Revision No. 3
Date: 14 Sep 2008
6.5 Fuel Flow Check
6.5.1 Type of Maintenance
Line
6.5.2 Minimum Level of Certification
Repairman, Light Sport Aircraft-Maintenance (RLSA-M) or higher.
Flight Design task specific training required.
6.5.3 Checking of Fuel Flow Rate
Check the fuel flow per minute of each tank through the gascolator exactly and note and compare with
the previous fuel flow rate. If there is a drop more than 5%, then check full system (bows in fuel lines) and
if still a difference, check the fuel filters in the wings (refer to p. 6.9).
1
Set the plane on the prepared platform. Attach the wings. Place a level on a roof. Set a fuselage
on horizon level, using supports under the main wheels.
2
Fill in a left wings’ tank with not less than 5 liters of fuel. Open a gascolators’ drain valve. Fuel
should drain by gravity.
If it is not, create superfluous pressure in a tank which generates the fuel drainage. After the fuel
starts to flow down, remove the superfluous pressure in a tank.
Inspection: cheking the fuel pipe throughput. Fuel should drain from a gascolator by
gravity with the charge not less 35 l / hour.
Drain all fuel from the left wings’ tank. Close the gascolators’ drain valve.
3
Fill in a right wings’ tank with not less than 5 liters of fuel. Open a gascolators’ drain valve. Fuel
should drain by gravity.
If it is not, create superfluous pressure in a tank which would promote the fuel drainage. After the
fuel starts to flow down, remove the superfluous pressure in a tank.
Inspection: checking the fuel pipe throughput. Fuel should drain from a gascolator by
gravity with the charge not less 35 l / hour.
4
Close the gascolators’ drain valve. Add the drained fuel in the right wings’ tank.
5
If the charge is less than 35 l / hour,
it is necessary to check up:
fuel hoses for absence of inflections, cleanliness of the fuel filter and a gascolator. After checking
the fuel hoses repeat items 1-3.
6.5.4 Simulation of In-Flight Engine Restart
6
Put the plane on a parking brake; fix it with tie-down belts (Fig.1).
7
Put a support 150 – 200 mm height under the left main wheel. The height of a support should
provide such roll of the plane that the level of fuel in a tank was below the fuel filter of tanks’ side
frame (check up according to fuel level index).
8
Start the engine. Keep up engine working while it stops after the rests of fuel will come to end in
the fuel pipes.
9
Pull out a support from under the left main wheel. When the plane takes horizontal position, start
the time countdown.
10
Start the engine.
Inspection: the engine should be started in 60 seconds.
11
If the engine is not started in 60 seconds, make all fuel system check for absence of inflections of