(4)  
The fourth task (Put the safety-sensitive systems back to their initial conditions) puts the systems that were set to off in the first task in an operational condition.

 C.  
The fifth and sixth tasks remove and install an air/ground relay.

 D.  
The last task does a test of a specified air/ground relay to make sure that it operates correctly.

 TASK 32-09-02-042-001
 2.  Prepare the Safety-Sensitive Systems for Air Mode Simulation
____________________________________________________________
 NOTE: This task can also be referred to as the "Flight Mode Simulation
____
 Deactivation" procedure.

 A.  General
 (1)  This task gives the instructions necessary to prepare the safety sensitive systems that use the air mode signal from the air/ground relay system.
 

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 (2)  
You must do this task before you put the air/ground relay system in the air mode.

 B.
References

 (1)  
AMM 27-61-00/201, Spoiler/Speedbrake Control System

 C.
Access

 (1)  
Location Zones
 119/120 Main Equipment Center
 211/212 Control Cabin

 (2)  
Access Panels
 119BL Main Equipment Center

 D.
Procedure

 S 042-002
 WARNING: MAKE SURE YOU DO THE STEPS TO PREPARE THE SYSTEMS FOR AIR MODE
_______ CORRECTLY. IF YOU DO NOT FOLLOW THESE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Do the steps that follow to prepare systems for air mode.

 E.
Prepare for the Air Mode

 S 862-074
 (1)  
Open these circuit breakers on the main power distribution panel, P6, and attach a DO-NOT-CLOSE tag:

 (a)  
6F1, RAT MAN PWR

 (b)  
6F2, RAT MAN CONT

 (c)  
6L15, CAPT MAIN PITOT HEAT

 (d)  
6L16, L AUX PITOT HEAT

 (e)  
6L17, L AOA HEAT

 (f)  
6L21, R AUX PITOT HEAT

 (g)  
6L22, F/O MAIN PITOT HEAT

 (h)  
6L23, R AOA HEAT

 (i)  
6L24, TAT PROBE HEAT

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 S 862-075
 (2)  
Open these circuit breakers on the overhead circuit breaker panel, P11, and and attach DO-NOT-CLOSE tags:

 (a)  
11B14, CABIN ALTITUDE CONTROL MANUAL

 (b)  
11B15, CABIN ALTITUDE CONTROL SELECT

 (c)  
11B34, APU ALTN CONT

 NOTE: If the APU operation is continuously monitored in the
____ flight compartment, then the APU can be operated and this circuit breaker does not need to be opened.
 (d)  11C28 or 11R20, ANTI-ICE WING
 NOTE: This circuit breaker is in one of these locations.
____
 (e)  
11D26, RAT CONT

 (f)  
11D27, RAT AUTO

 (g)  
11E18, FLT CONT COMPUTER SERVO LEFT

 NOTE: The FLT CONT COMPUTER SERVO circuit breakers can be
____ closed if there is no hydraulic pressure on the wing and tail servos.
 (h)  
11E21, FLT CONT COMPUTER SERVO CENTER

 (i)  
11E36, FLT CONT COMPUTER SERVO RIGHT

 (j)  
11F15, TMC DC

 (k)  
11J7, FLIGHT RECORDER AC
　
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