Figure 6: Safety Range for Engine Start and Test
Page 238 Doc # 6.02.01 15 Mar 2005 71-02-00 AMM-TR-V.M-40-002

DA 40 F

Detail Steps/Work Items  Key Items/References 
(6)  Make sure that there is enough fuel for the engine test: S Set the ALT/BAT switch to ON. S Read the fuel quantity indicator. S Set the ALT/BAT switch to OFF. S Refuel the airplane if necessary. 
(7)  Read the engine oil contents. Add oil if necessary.  Refer to Section 12-10. 

7. Engine Starting
See the Lycoming Operator's Manual for operating limits.
Detail Steps/Work Items  Key Items/References 
(1)  Enter the cockpit. 
(2)  Set the parking brake to ON. 
(3)  Make sure that the fuel selector/shut-off valve is set to LEFT or RIGHT. 
(4)  Set the fuel selector valve as required. 
(5)  Make sure that the passenger door is closed and locked. Close and lock the canopy. 
(6)  Make sure that: S The throttle lever is free to move. S The mixture lever is free to move. S The propeller control lever is free to move. 
(7)  Set the ALT/BAT switch to ON. 
(8)  Make sure that the engine indicator display panel reads correctly. 
(9)  Do a test of the annunciator panel.  Refer to Section 31-50. 

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DA 40 Series AMM

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DA 40 F

Detail Steps/Work Items  Key Items/References 
(10)  Set the alternate air control to OFF. 
(11)  Set the electrical fuel pump to ON. Listen for the fuel pump working, Make sure that: S The fuel pressure increases. 
(12)  Set the throttle to 1/4 open. 
(13)  Prime the engine: S If the engine is cold, set the mixture control to full RICH and push the primer button for 1 to 4 seconds. S If the engine is warm, set the mixture control to full RICH. 
(14)  Press on both brake pedals together and hold the flying controls in neutral. 
(15)  Make sure the area of the propeller is clear. 
(16)  Turn the ignition switch to the START position.  Make sure that the engine start light comes on. 
(17)  When the engine starts: S Release the ignition switch to the BOTH position.  Make sure that the engine start light goes out. 
(18)  Set the throttle to give 1000 - 1200 RPM.  Make sure that there are no warning lights on. 
(19)  Monitor the oil pressure.  The oil pressure must rise to 25 psi minimum, within 30 seconds of starting the engine. If it does not, then you must shut-down the engine. 
(20)  Set the electrical fuel pump to OFF. 
(21)  Set the throttle to give 1500 RPM.  Warm up the engine until the oil temperature reaches 100 °F. Monitor the instruments for unusual indications. 

DA 40 Series AMM

8. Measure/Adjust Engine Performance
A. Measure Engine Performance
DA 40 F

Detail Steps/Work Items  Key Items/References 
(1)  Set the engine to 1800 RPM. 
(2)  Do a test of the left magneto: S Set the ignition switch to L. S Set the ignition switch to BOTH.  The RPM must decrease by 50 - 175 RPM. The RPM must return to 1800 RPM. 
(3)  Do a test of the right magneto: S Set the ignition switch to R. S Set the ignition switch to BOTH.  The RPM must decrease by 50 - 175 RPM. The RPM must return to 1800 RPM. The maximum difference between the left and right magneto RPM drop is 50 RPM. 
(4)  Do a test of the alternate air: S Set the alternate air control to ON for 10 - 15 seconds. S Set the alternate air control to OFF. 
　
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