-Weather Radar Shelf 109VU Between Frames 2 and 4, L side, there is a 16 MCU capacity rack for Weather Radar installation.
-FWD Electronics Rack 90VU Between Frames 7 and 8, there is a 95 MCU capacity transversal rack fitted with five shelves.
Space is provided for installation of non-Arinc miscellaneous items (window heat computers, probe heat computers, contactors, relays, miscellaneous equipment, etc...).
There is also a ground power receptacle forward of the nose gear between Frames 7 and 8.
All the rack shelves are removable. An underfuselage access door is provided at Frame 4.
B. Avionics Compartment - Lateral Right Part
(Ref. Fig. 003)
This part contains the following items of equipment:
-Ann Lt Test Unit 70VU, between Frames 10 and 12.
-Relay Box 103VU, between Frames 9 and 10.
-Contactor Box 107VU, between Frames 15 and 16.
-It is also fitted with two batteries, 2 transformer rectifiers, 1
static inverter and 2 battery charge limiters. An underfuselage off-centered door provides external access at Frame 13.
C. Avionics Compartment - Lateral Left Part.
(Ref. Fig. 004)
This part contains the following items of equipment:
-AC/DC Emergency Power Center 106VU, between Frames 13 and 15.
-the associated generator control unit, transformer rectifier and transformer.
An underfuselage off-centered door provides external access at Frame
14.
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Fwd Electronics Rack 90VU & Weather Radar Shelf 109VU
Figure 002
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Ann Lt Test Unit 70VU, Relay Box 103VU & Contactor Box 107VU
Figure 003
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AC/DC Emergency Power Center 106VU
Figure 004
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D. Avionics Compartment - Aft Part. (Ref. Fig. 005) This part contains the following items of equipment:
-A 30 MCU capacity rack with an adjustable shelf for ADIRS installation, located under the air cooling pack for the ventilated equipment, between Frames 21 and 22.
-Aft Electronics Rack 80VU Between Frames 23A and 24 there is a 274 MCU capacity transversal rack heaving four levels.
An underfuselage off-centered door provides external access at Frame
22.
An access panel allows communication with the passenger compartment.
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Aft Electronics Rack 80VU & Access Ladder
Figure 005
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INSULATION (THERMAL AND ACOUSTICAL) - DESCRIPTION AND OPERATION
_______________________________________________________________
1. General
_______
The thermal insulation does the following:
-minimizes the loss of heat from the fuselage,
-stops the formation of condensation,
-reduces the noise level in the fuselage.
2. Component Location
__________________
(Ref. Fig. 001)
The thermal insulation is a material and not a component. This material is distributed through the pressurized fuselage, and is of different thickness, and installed in different ways.
3. System Description
__________________ R
R (Ref. Fig. 002)
A. Fuselage Primary Insulation
The fuselage is insulated with glasswool blankets that have a density of
0.42 lb/ft3 (6.73 kg/m3), except for the cockpit area. The cockpit area is insulated with glasswool blankets that have a density of 0.6 lb/ft3
(9.63 kg/m3). In both places the insulation blanket is covered with a foil material with seams that are either sewn or thermal inpact bonded. The foil material at one side of each blanket has ventilation holes. These face inboard of the aircraft skin to stop condensation entering the blankets, except under the aircraft's floor. Under the aircraft floor the holes in the foil material face outboard (aft of frame 24), to stop condensation entering. The passenger/emergency doors and door frames are insulated with glasswool cushions and/or polyethylene foam plates.
B. Cabin Secondary Insulation
Secondary insulation is fitted to, or integrated with, the following
interior panels:
-
the rear side of the hatracks (when necessary for acoustic reasons),
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