-
the rear side of the upper sidewall panel,

 -
the rear side of the lower sidewall panels (dado panels). This insulation has a minimum thickness of 6 mm.

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25-80-00Page 1

R  Area of Insulation - Example Figure 001
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 INTENTIONALLY BLANK

R R  Insulation Blanket Attachment - Example Figure 002 (SHEET 1)
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R R  Insulation Blanket Attachment - Example Figure 002 (SHEET 2)
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 Insulation under the floor of the forward and aft cargo compartment reduce heat-loss of the cargo heating system. This helps to meet specified cargo compartment temperatures, and reduces the quantity of condensation. The insulation used is foam panels with a thickness of 30 mm. These are bonded with adhesive to the underside of the floor of each cargo compartment.
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25-80-00Page 6

 INSULATION (THERMAL AND ACOUSTICAL) - MAINTENANCE PRACTICES
___________________________________________________________
 TASK 25-80-00-000-001
 Removal of the Insulation Blankets
 1. Reason for the Job
__________________
 Removal for access to the fuselage structure (skin panels, frames, stringers
 etc.).
 Removal for the maintenance of the air conditioning ducts etc.

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform(s) 2.0 m (6 ft. 7 in.)
 No specific access platform 3.5 m (11 ft. 6 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
25-23-41-000-001 Removal of the Ceiling Panels 25-23-42-000-001 Removal of the Ceiling Panels - Forward Utility Area 25-23-43-000-001 Removal of the Upper Sidewall Panel(s)
R  25-23-44-000-001 Removal of the Lower Sidewall-Panels (Dado Panels) 25-23-45-000-005 Removal of the Door Frame Linings at the Left FWD
 Passenger/Crew Door
 25-24-41-000-001 Removal of the Overhead Stowage Compartments
 25-80-00-991-001 Fig. 201

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25-80-00Page 201

 3. Job Set-up
__________
 Subtask 25-80-00-010-050

 A. Get Access
 (1)
 Put the access platform in position at the FWD passenger/crew door.

 (2)
 Put the access platform(s) in position at the FWD and/or AFT cargo compartment door(s).

 (3)
 Open the appropriate access door.

 (4)
 Remove the parts given subsequently only where necessary to remove the insulation blankets:

 -
the upper and lower sidewall panels (Ref. TASK 25-23-41-000-001) (Ref. TASK 25-23-42-000-001) (Ref. TASK 25-23-43-000-001) (Ref. TASK 25-23-44-000-001) (Ref. TASK 25-23-45-000-005) (Ref. TASK 25-24-41-000-001),

 -
the cargo compartment linings

 -
the circuit breaker panels,

 -
the air conditioning ducts

 -
the electrical cable fasteners,

 -
the bonding straps,

 -
the screwed brackets.

 4. Procedure
_________ R (Ref. Fig. 201/TASK 25-80-00-991-001) Subtask 25-80-00-020-050
 A. Removal of the Insulation Blankets NOTE : No cuts and incisions shall be made in the blankets which are
____ installed directly in the top of the fuselage between STRG5 -STRG5' to prevent condensed water entering the cabin.
 (1)
 Remove the washers (5) from the studs (6).

 (2)
 Remove the cable brackets (2) and the rings (3).

 (3)
 Remove the insulation blanket (1).

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 Typical Removal/Installation of an Insulation Blanket
 Figure 201/TASK 25-80-00-991-001

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25-80-00Page 203

Feb 01/98
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 TASK 25-80-00-400-001
 Installation of the Insulation Blankets
 1. Reason for the Job__________________
 Self Explanatory
 2. Job Set-up Information______________________
 A. Consumable Materials
　
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