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 D. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU ENGINE/2/FADEC A/AND EIU 2 49VU ENGINE/1/FADEC A/AND EIU 1 49VU ENGINE/1 AND 2/IGN/SYS A 121VU ENGINE/IGN/ENG2/SYS B 121VU ENGINE/IGN/ENG1/SYS B 121VU ENGINE/IGN/ENG2/SYS A BAT 121VU ENGINE/IGN/ENG1/SYS A BAT 121VU ENGINE/ENG2/FADEC B 121VU ENGINE/ENG1/FADEC B/AND EIU 1  2KS2 2KS1 1JH 3JH2 3JH1 2JH2 2JH1 4KS2 4KS1  A05A04A03P42P41P40P39Q40R41
 4. Procedure_________
 Subtask 32-31-00-040-052
 A. Check of the System 2 Proximity Sensors of the Landing Gear and Landing Gear Doors
 (1) Do an inspection of the target clearances of the system 2 proximity sensors (Ref. TASK 32-31-73-200-001).
 (2) If the inspection clearances are correct and there is no damage to the sensor or the target, do the steps that follow:
 (a) For 23GA or 24GA :
 1_  Make sure that these systems are serviceable:
R R  - the LGCIU 1 (Ref. TASK 32-69-00-740-001) or (Ref. TASK 32-31-00-720-002) - the two radio altimeters (RA) (Ref. TASK 34-42-00-740-002). 
R R  2_  Make sure that the two thrust-lever position-sensors of engine2 are serviceable, as follows:

 

R WARNING : OPEN CIRCUIT BREAKERS 1JH, 2JH1, 2JH2, 3JH1 AND 3JH2
_______
 (ENGINE 1 AND 2 IGNITION SYSTEMS).
 THEN OPEN CIRCUIT BREAKERS 2KS1 AND 2KS2 (FADEC A
 AND EIU 1 AND 2) AND 4KS1 (FADEC B AND EIU 1).
 IF YOU DO NOT OBEY THIS SEQUENCE, THE ENGINE
 AUTOMATIC IGNITION- SYSTEM WILL OPERATE. THIS CAN
 CAUSE INJURY TO MAINTENANCE PERSONNEL.
 a_ Open the circuit breakers 1JH, 2JH1, 2JH2, 3JH1, 3JH2, 2KS1
 and 2KS2.
 b_ Move the ENG1(2) throttle control lever. Make sure that the
 small white circle on N1 indication follows the throttle
 position.
 c_ Close the circuit breakers 2KS1 and 2KS2 but keep the
 circuit breakers 1JH, 2JH1, 2JH2, 3JH1 and 3JH2 open. 
R  WARNING : OPEN CIRCUIT BREAKERS 1JH, 2JH1, 2JH2, 3JH1 AND_______
 3JH2 (ENGINE 1 AND 2 IGNITION SYSTEMS).
 THEN OPEN CIRCUIT BREAKERS 2KS1 AND 2KS2 (FADEC A
 AND EIU 1 AND 2) AND 4KS1 (FADEC B AND EIU 1).
 IF YOU DO NOT OBEY THIS SEQUENCE, THE ENGINE
 AUTOMATIC IGNITION- SYSTEM WILL OPERATE. THIS CAN
 CAUSE INJURY TO MAINTENANCE PERSONNEL.
 d_ Open the circuit breakers 4KS1 and 4KS2.
 e_ Move the ENG1(2) throttle control lever. Make sure that the
 small white circle on N1 indication follows the throttle
 position.
 f_ Close the circuit breakers 4KS1, 4KS2, 1JH, 2JH1, 2JH2,
 3JH1 and 3JH2.
 g_ Move the ENG1(2) throttle control lever. Make sure that the
 small white circle on N1 indication follows the throttle
 position.
 h_ Do the BITE test of the EFCS (Ref. TASK 27-96-00-740-001)
 and make sure that there are no messages related to the
 throttle control unit 8KS1(2).
 i_ Do the EIS stop procedure (Ref. TASK 31-60-00-860-002).

 1EFF : ALL 1 32-31-00Page 405 1 1 Feb 01/03 1 1 1CES 1 1EFF : ALL 1 32-31-00Page 406 1 1 Aug 01/02 1 1 1CES 1

 (b) If more than one system-2 proximity-sensor is electrically unserviceable:
R R R R  1_ Make sure that these systems are serviceable: - the LGCIU 1 (Ref. TASK 32-69-00-740-001) or (Ref. TASK 32-31-00-720-002) - the elevator and aileron computer (ELAC) (Ref. TASK 27-93-00-710-001) - the spoiler elevator computer (SEC) (Ref. TASK 27-94-00-710-001), (Ref. TASK 27-94-00-710-002) and (Ref. TASK 27-94-00-710-003) - the slat flap control computer (SFCC) (Ref. TASK 27-51-00-740-002) and (Ref. TASK 27-81-00-740-002) - the radio altimeter (RA) (Ref. TASK 34-42-00-740-002) - the flight augmentation computer (FAC) (Ref. TASK 22-60-00-710-001) - the air data/inertial reference system (ADIRS) (Ref. TASK 34-13-00-740-002) and (Ref. TASK 34-13-00-740-003) - the air conditioning packs (Ref. TASK 21-26-00-710-001) and (Ref. TASK 21-27-00-710-001). 
R R  2_  Make sure that the use of flexible take-off thrust isprevented, as follows:
 a_ Turn the BRT knob of the MCDU, to turn the MCDU on.
 b_ Press the PERF pushbutton on the MCDU keyboard to get the TAKE OFF data.
 c_  Make sure that no FLEX TO TEMP is displayed.
R R  3_  Make sure that the operation of avionics equipment-ventilationwith electrical ground-power, is time limited, as follows: - outside air temperature 43 deg. C or less, no time limitation - outside air temperature 52 deg. C, maximum of 3 hours - outside air temperature 61 deg. C, maximum of half an hour. 
　
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