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737-300/400/500MAINTENANCE MANUAL
 S 764-046-B00
 (3)  Connect the power leads to the terminals of the window bus bar.
 S 434-036-B00
 (4)  Install the trim panels and the crash padding where they are
 necessary (AMM 25-11-21/201).
 S 034-037-B00
 (5)  Remove the protective cover from the inner side surface of the
 window.
 S 764-038-B00
 (6)  Do a test of the window heating system (Ref 30-41-00 and/or
 30-41-11).

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737-300/400/500MAINTENANCE MANUAL
 WINDOWS NO. 4 AND NO. 5 - INSPECTION/CHECK
__________________________________________
 1.  General
_______
 A.  To do the inspection and check of windows No. 4 and No. 5, refer to the control cabin fixed windows - maintenance practices (Ref 56-11-00/200).
 B.  The outer pane is non structural but it gives the window a hard, scratch resistant outboard surface.
 TASK 56-11-31-206-008-B00
 2.  Window Inspection - Window No. 4
________________________________
 A.  Equipment
 (1)  Optical Micrometer - Model 966A or 966A1
 Edwards Aerospace Co.
 Ontario, Ca.

 B.  References
 (1)  56-11-31/401, Windows No. 4 And No. 5
 C.  Access
 (1)  Location Zone
 101/102 Control Cabin

 D.  Procedure
 S 226-015-B00
 (1)  Examine and replace the No. 4 window if you see these conditions:
 (a) Examine the inner glass pane for these conditions:
 NOTE: Make sure you examine the inner glass pane, not the
____ adjacent inner vinyl layers or the inner cast acrylic pane. The inner vinyl layer and the inner cast acrylic pane are not structural.
 1)  Conchoidal chips in one of the two surfaces, with a depth
 more than 0.015 inch 2) V-shaped chips 3) An arcing, chips, delaminations or an intermittent
 operation which cause the No. 4 window heat system to not operate.
 NOTE: Refer to limitation section, Boeing 737 Flight
____ Manual for control cabin window heat requirements.
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737-300/400/500MAINTENANCE MANUAL
 (b) Examine the outer glass pane for these conditions:
 1)  Cracks, chips, delamination which decrease the visual capacity.
 NOTE: No. 4 window replacement due to outer pane damage
____ should be based upon window visibility requirements and can be delayed to the nearest maintenance interval.
 (c)  Examine the No. 4 window for these conditions: 1) A delamination of the outer pane which extends more than
 1.0 inch (25.4 mm) deep from the edge of the window pane to the center.
 2)  A delamination of the outer pane that has an effect on the visual condition of the window.
 NOTE: Delamination is the separation of a glass pane from
____ the adjacent inner layer. A delamination can have an effect on the window heat system.
 A delamination does not change the structural strength of the windshield. Thus, use the delamination limits as an aid for wimdow replacement. The delamination limits can be extended if the visual capacity is satisfactory.
 (d) Examine the outer vinyl layer for cracks of any kind.
 NOTE: Cracks in the urethane layer, urethane crackling,
____ is not considered a structural concern and does not require removal of window unless visibility is compromised. Urethane crackling is not the same as vinyl interlayer cracks.
 TASK 56-11-31-206-009-B00
 3.  Window Inspection - Window No. 5________________________________
 A.  References
　
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