R 1EFF : 106-149, 303-399, 401-499, 1 21-51-51Page 463 1 1 Aug 01/05 1 1 1CES 1 Subtask 21-51-51-865-065
E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 23HB 49HH, 50HH, 51HH, 52HH. FOR 24HB 53HH, 54HH, 55HH, 56HH.
Subtask 21-51-51-710-053
F. Test
(1) Do the operational test of the flow control and indicating system (Ref. TASK 21-51-00-710-002).
5. Close-up
________
Subtask 21-51-51-410-060
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Install the access panels (Ref. TASK 53-35-13-400-002): R (a) FOR 23HB 191KB and 191BB. R (b) FOR 24HB
192KB and 191BB.
Subtask 21-51-51-862-053
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
R 1EFF : 106-149, 303-399, 401-499, 1 21-51-51Page 464 1 1 Aug 01/05 1 1 1CES 1 **ON A/C 051-099, 201-299, 301-302,
TASK 21-51-51-000-002 Removal of the Air Duct upstream of the Flow Control Valve 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.
NOTE : The procedure is the same for the air ducts of both packs.
____
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs No specific circuit breaker(s) safety clip(s) No specific protective covers
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
21-51-51-200-002 Attachment Components (In-Service Wear Limits) - Air Duct 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure
**ON A/C 051-054,
21-51-51-991-006-B Fig. 403
1EFF : 051-099, 201-299, 301-302, 1 21-51-51Page 465 1 1 Aug 01/05R 1 1 1CES 1
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
**ON A/C 055-099, 201-299, 301-302,
21-51-51-991-006 Fig. 403A **ON A/C 051-099, 201-299, 301-302,
21-51-51-991-008 Fig. 405A
3. Job Set-up
__________ Subtask 21-51-51-861-052
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 21-51-51-865-060
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 100HM
49VU AIR COND/FLOW/CTL &/IND1 1HB D07 FOR 101HM 122VU AIR COND/FLOW/CTL AND IND/2 2HB V21
Subtask 21-51-51-941-052
C. Safety Precautions
(1) On the panel 30VU:
(a)
Make sure that:
-
the APU BLEED pushbutton switch is in the off position (the ON legend is off) and,
-
the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).
(b)
Put a warning notice in position to tell persons not to operate these pushbutton switches.
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(2) On the HP ground connector put a warning notice in position to tell persons not to supply the ground air.
Subtask 21-51-51-010-056
D. Get Access
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