-191KB.
 -192KB.
 -191BB.
 Subtask 21-52-00-862-059
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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 General Visual Inspection of the Bellows between the Pack Outlet and the Mixer Unit
 WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______ FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
 1. Reason for the Job
__________________
 referenced from TSM
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
21-52-00-200-013 Detailed Inspection of the Pack Downstream Check-Valve Flappers 24-42-00-861-001 Energize the Ground Service Network from the External Power 53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure 53-35-13-400-002 Installation of the Quick-Release Access Panels on the Belly Fairing Structure 21-52-00-991-018 Fig. 605
 3. Job Set-up
__________
 Subtask 21-52-00-861-061
 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001)

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 Subtask 21-52-00-865-073
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 10HM 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R  49VU AIR COND/FLOW/CTL &/IND1 **ON A/C 401-499, 1HB  D07 
R  49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399, 52HH  D08 
R  122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC  1HH 3HH  X22X21 
R  **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302, 
R R  122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,  4HH  Y19 
R R  122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC **ON A/C 106-149, 303-399,  2HH  Y18 
R  122VU  4HH  Y19 
R  **ON A/C 401-499, 
R R  122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC  49HH 51HH 50HH  X22 X21Y18 

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 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------**ON A/C ALL
 FOR 11HM 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 122VU AIR COND/FLOW/CTL AND IND/2 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC  2HB 21HH 23HH 24HH 22HH  V21W22W21Y21Y20 
R  **ON A/C 401-499,
R R  122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC  53HH 55HH 56HH 54HH  W22W21 Y21Y20 
**ON A/C ALL
 Subtask 21-52-00-010-070
 C. Get Access
 (1) Remove the access panels: (Ref. TASK 53-35-13-000-002).
 (a) FOR 10HM - 191BB.
 (b) FOR 11HM - 192FB. 

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 4. Procedure_________
 (Ref. Fig. 605/TASK 21-52-00-991-018)
 Subtask 21-52-00-210-058
 A. General Visual Inspection of the Bellows
 (1) In the air-conditioning pack bay do a general visual inspection of the bellows (1).
 (2) Make sure that the bellows (1) have no damage and are correctly installed.
 (3) If one or both of the bellows are damaged, - do the detailed inspection of the pack downstream check-valve flappers (Ref. TASK 21-52-00-200-013). - replace the damaged bellows.
　
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