5. Test the PM 1000 II Intercom
DA 40 Series

Detail Steps/Work Items  Key Items/References 
(1)  Make sure all the head-sets are connected. 
(2)  Select the mode switch to ALL. 
(3)  Turn the VOLUME control to switch the unit ON. 
(4)  Do a test for communication between the pilot, co-pilot and passenger head-sets. 
(5)  Test the function of the VOLUME control. 
(6)  Test the function of the SQUELCH control. 
(7)  Set the mode switch to ISO.  Make sure that there is no intercom between the pilot, co-pilot and passenger head-sets. 
(8)  Pull the AUDIO circuit-breaker.  Make sure that radio transmission and reception is possible from the pilot's head-set. 
(9)  Set the mode switch to CREW.  Make sure that the pilot and co-pilot can communicate and transmit on the airplane radio. Make sure that the passengers can communicate with themselves but not to the pilot or co-pilot. 

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% 6. Test the Audio Panel
A. Intercom Functions
% This paragraph applies to the KMA 28 and GMA 340 audio panels.
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Detail Steps/Work Items  Key Items/References 
(1)  Make sure that all the head-sets are connected. 
(2)  Switch the unit ON. 
(3)  Select the ALL mode. 
(4)  Do a test for communication between the pilot, co-pilot and passenger head-sets. 
(5)  Test the function of the VOLUME control. 
(6)  Test the function of the squelch control. 
(7)  Select the ISO mode (KMA 28) or PILOT mode (GMA 340).  Make sure that there is no intercom between the pilot, co-pilot and passenger head-sets. 
(8)  Pull the AUDIO circuit-breaker.  Make sure that radio transmission and reception is possible from the pilot's head-set. 
(9)  Select the CREW mode.  Make sure that the pilot and co-pilot can communicate and transmit on the airplane radio. Make sure that the passengers can communicate with themselves but not to the pilot or co-pilot. 

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AMM

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% B. KMA 28 Audio Selector and Marker Beacon Receiver Functions

Detail Steps/Work Items  Key Items/References 
(1)  Make sure that all the head-sets are connected. 
(2)  Set the ALT/BAT switch (Lycoming version) or ELECTRIC MASTER key switch (TAE version) to ON. 
(3)  Set AVIONIC MASTER switch to ON. 
(4)  Push the VOL knob to switch the unit ON. 
(5)  Set the mic selector rotary switch to COM 1.  Make sure that: S The green LED in the COM 1 button comes on. S The green TRANSMIT LED does not come on. 
(6)  Do a test transmission on COM 1 from the co-pilot station.  Make sure that: S The PTT button gives proper transmission on COM 1. 
(7)  Push the COM 2 button.  Make sure that: S The green LED in the COM 2 button comes on. S The COM 2 receiver can be heard. 
(8)  Do a test transmission on COM 1 from the pilot station.  Make sure that: S The PTT button gives proper transmission on COM 1. 
(9)  Push the COM 2 button.  Make sure that: S The green LED in the COM 2 button comes on. S The COM 2 receiver can be heard. 
(10)  Set the mic selector rotary switch to COM 2.  Make sure that: S The green LED in the COM 2 button comes on. S The green TRANSMIT LED does not come on. 

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Communications
AMM

DA 40 Series

Detail Steps/Work Items  Key Items/References 
　
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