(3)
 Hold the telescopic duct in the retracted position with MISCELLANEOUS (Material No. 19-010).

 (4)
 Hold the telescopic duct assembly and remove the clamp (1).

 (5)
 Put blanking caps on the open ends of the telescopic duct and the D-nose duct.

 (6)
 To remove the telescopic duct from the D-nose, do these steps:

 (a)
 Remove and discard the cotter pins (21). Remove the slotted nuts

 (22) and the washers (23).

 (b)
 Remove the bolts (18) and the washers (19).

 (c)
 Remove the telescopic duct from the D-nose.

 (7)
 If you are to install a new telescopic duct, do these steps:

 (a)
 Release the tab washers (16).

 (b)
 Remove the bolts (17). Remove and discard the tabwashers (16).

 (c)
 Remove the half clamps (14) and (15).

 (d)
 Keep the half clamps (14) and (15) together so you can install them on the replacement duct.

 Telescopic Duct
 Figure 401/TASK 30-11-41-991-001- 12 (SHEET 1)
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 1  1
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 Telescopic Duct
 Figure 401/TASK 30-11-41-991-001- 22 (SHEET 2)
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 TASK 30-11-41-400-001

 Installation of the Telescopic Duct
 WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
_______
 NOTICES ARE IN POSITION.

 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific plastic spatula
 No specific safety barriers
 No specific warning notices
 No specific access platform 3.0 m (9 ft. 10 in.)

R No specific Torque Wrench : range 0.00 to 1.20 m.daN
R (0.00 to 9.00 lbf.ft)

 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 08-004 USA MIL-A-25457
 ADHESIVE SEALANT (Ref. 20-31-00)
 Material No. 11-026 GB DEF-STAN 68-148/1
 SOLVENT GENERAL PURPOSE (Ref. 20-31-00)
 Material No. 16-016 C Z-12.383
 EXTERNAL DECORATION PAINT (Ref. 20-31-00)
 Material No. 19-003 USA AMS 3819
 LINT-FREE COTTON CLOTH (Ref. 20-31-00)

 Material No. 19-010  USA AMS 5687
 LOCKWIRE STAINLESS STEEL ANNEALED 0.8MM DIA
 (Ref. 20-31-00)

 C. Expendable Parts

 -------------------------------------------------------------------------------
FIG.ITEM --------- |DESIGNATION ---------------------------------------- |IPC-CSN------------------------------
16  tabwashers  30-11-41 01A-285
 21  cotter pins  30-11-41 01A-105
 D. Referenced Information
 ------------------REFERENCE  -------------------------------DESIGNATION ------------------------------

-------------------------------------------------------------------------------
27-80-00-866-004 Extending the Slats on the Ground 27-80-00-866-005 Retracting the Slats on the Ground 30-11-41-991-001 Fig. 401
 3. Job Set-up
__________
 Subtask 30-11-41-941-051
 A. Safety Precautions
 (1) Make sure the warning notices are in these positions, before you do work on the ice protection system: - on the high-pressure ground-power connections, to tell persons not
 to pressurize the pneumatic system
 -in the cockpit, to tell persons not to operate the engines or the APU control switches - on the panel 50VU, to tell persons not to pressurize the bleed-air system
 - on the panel 115VU, to tell persons not to operate the slat controls.
 (2) Make sure that the safety barriers are in position.
 Subtask 30-11-41-860-050
 B. Aircraft Maintenance Configuration
 (1)
 Make sure that the slats are fully extended (Ref. TASK 27-80-00-866-004).
　
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