D. Install Panel No. 3
(1)
Insert outboard and aft edges into interior lining trim attachments.
(2)
Install fasteners along inboard edge.
(3)
Install snap-in exit light lens over aft entry door.
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Nov 15/77 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 25-21-362 Page 405
E. Install Lowered Ceiling End Cap
(1)
Place outboard panels of end cap in position and move inboard to engage inboard edges with air conditioning outlet nozzle.
(2)
Support outboard panels and loosely install screws and washers to secure panels to structure.
(3)
Support outboard end of panel with surfaces of panel and adjacent overhead stowage compartment aligned within + 0.05 inch and tighten attaching screws.
(4)
If necessary, loosen screws securing outboard attaching brackets to panel and slide panel forward or aft as necessary to provide a gap of 0.75 +0.10 inch between end cap panel and adjacent curved ceiling panel.
(5)
Tighten screws to secure attaching brackets to panel.
(6)
Support center panel of end cap in position with an equal gap on each side between outboard panels and secure with eight attaching screws.
NOTE: Three attaching screws on left side are equipped with spacers and one also secures a wiring clamp.
(7)
Install two screws to secure exit light to brackets on center panel.
(8)
Connect wire bundle to emergency exit light on center panel.
(9)
Raise curved ceiling panels installed adjacent to lowered ceiling end cap (Ref 25-21-341, Maintenance Practices).
(10)
Close emergency exit light circuit breakers opened during removal of lowered ceiling end cap.
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F. Install Panel No. 5 or No. 6
(1)
Support panel in mounting position and install two screws to secure panel to bracket on overhead support structure.
(2)
Install fasteners at inboard and aft edges.
(3)
At outboard edge of panel, install fasteners to secure angle on panel to bracket on structure.
(4)
Raise passenger service unit and install overhead stowage compartment which were lowered or removed to gain access to panel attachments (Ref 25-23-311, Maintenance Practices and 25-24-311, Removal/Installation).
(5)
Install aft left windscreen (Ref 25-24-133).
(6)
Install aft right windscreen (Ref 25-24-141).
G. Install Panel No. 10
(1)
Attach panel No. 10 hinges to support structure and hinge up panel.
(2)
Install fasteners at right edge of panel.
(3)
Install curtain and curtain track on panels No. 10 and 3.
H. Install Panel No. 9
(1) Place panel in position and install fasteners through support brackets at each corner of panel.
I. Install Panel No. 1 or 2
(1)
Attach lowered ceiling panel to hinges.
(2)
Hinge lowered ceiling panel up to engage the two latches.
May 15/79 25-21-362 Page 407
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
K91374
Aft Lowered Ceiling Installation 514
25-21-362 Figure 401 (Sheet 1) May 15/79
Page 408
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
566 Aft Lowered Ceiling Installation
Nov 15/77 Figure 401 (Sheet 2) 25-21-362
Page 409
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Aft Lowered Ceiling Installation 533
25-21-362 Figure 401 (Sheet 3) Feb 15/72
Page 410
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
511 Aft Lowered Ceiling Installation
May 1/75 Figure 401 (Sheet 4) 25-21-362
Page 411
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Aft Lowered Ceiling Installation 566
25-21-362 Figure 401 (Sheet 5) Nov 15/77
Page 412
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
LOWERED CEILING PANELS - REMOVAL/INSTALLATION
EFFECTIVITY
ATI INTERIOR
1. General
A. This procedure covers ceiling panels in vicinity of entry doors at forward and aft ends of passenger compartment.
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