Van's Aircraft RV 12iS, Production Acceptance Procedures

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Revision: 2.3 Date: 10/30/20
G4-2
Time to pump one gallon: (Max Time: 180 seconds)

Master Switch “OFF”.

Re-connect fuel line to fuel pump.
(iS) Fuel System Testing:

Remove the fuel supply hose from the RH fuel manifold on the engine.

Feed fuel hose into a fuel container that will show an internal fuel level of 1 gallon. Fuel
container should be at fuel pump height. Observe fire and ventilation safety.

Master Switch “ON”

“Fuel Pump 1” switch “ON”. Pump at least one gallon of fuel through the fuel system into a
clean fuel container.

“Fuel Pump 1” switch “OFF”

Check for debris in the container. If debris is observed filter fuel and return it to the fuel tank
then repeat test until fuel comes out clean.

“Fuel Pump 2” switch “ON”. Pump at least one gallon of fuel through the fuel system into a
clean fuel container.

“Fuel Pump 2” switch “OFF”

Check for debris in the container. If debris is observed filter fuel and return it to the fuel tank
then repeat test until fuel comes out clean.

Reconnect the fuel line.

Run fuel pumps for approximately 30 seconds each individually, then both at once, and
record system pressure:
Fuel Pump 1 switch:
Fuel Pump 2 switch:
Both:

Master Switch “OFF”.

Check entire fuel system for leaks.

Remove lower spark plug from each cylinder.
Propeller and spinner installation:

Remove spinner.

Check prop blade pitch setting (blades both at same pitch angle). See KAI Section 47iS/U.

Check prop bolt torque.

Check prop tracking (difference between blades must be less than 1/8 inch (3.17mm)).

Re-install spinner.

Check pitot tube tracking (max difference must be less than 1/16 inch (1.6mm)).

Master Switch “ON”.

Confirm Ignition Lane A and B – “OFF”

Unlatch one wing pin at a time and verify red warning light comes on.

Verify starter circuit is disabled while red warning light is on.

While red warning light is on, check that holding the spar pin warning light button enables
starter circuit.

Master Switch “OFF”.

Install lower spark plugs in all cylinders.

Install cowl.