MAIN WINDOW RETROFIT

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP75B00159R000400040050-9
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 2
• Document Creation Date: December 16, 2016
• Document Release Date: December 3, 2004
• Sequence Number: 50
• Publication Date: September 15, 1966
• Content Type: SUMMARY

Approved F.elease 2005/02/10: CIA-RDP75B001S000400040050-9
0-36-600327-.2-
15 September 1966
TYPE II SYSTEM
CONTRACT 0-TM-483
Subject: Main Window Retrofit
Reference: Message - Area 9228; Shop Report, SP-993,
24 June 1966 - Type II Structural Window Test
Chipping in the corners of the main window has caused
concern for the operational reliability of this item and warrants
consideration of corrective action.
Original design of the main window was such that metal
to glass contact was possible (in the corners) should the mounting
gasket compress during flight or should the frame become distorted.
Under the extenuating circumstances of a flight test on 10 May 1966
(Type II bottom hatch used when package was not flown) the main
window actually "blew out" during a test. The reference report out-
lines the results of laboratory window tests, the mounting problems
related to the present window assembly, strength analysis of the
window and suggests that:
1. A new unified molded silicon gasket be used to
mount the window.
2. The window edge cut (mounting surface) be modified
to accept a new type of molded gasket.
3. Thickness of window be increased 0.006 inch.
25X1 I Ishop has offered to provide a new molded
window gasket. Type II would rework the present windows to accept the
new gasket and would fabricate any new windows to the increased
thickness and to accept the new gasket.
Addition of new type molded gasket per reference report
SP-993 would reduce chipping of main window and provide a more reliable
mounting.
25X1
Approved For Release 2005/02/10 : CIA-RDP75B00159 R000400040050-9
 Approved .eiease 2005/02/10: CIA-RDP75B0011W 000400040050-9
0-36-600327?-2,
- 2 - 15 September 1966
Type II concurs with reference report SP-993 and
strongly recommends that present window assemblies be returned on a
rotational basis for rework which would include cutting the mounting
edge and installing the new gasket. Zile would also plan to make any
new windows to the increased thickness dimension. (Does not change
mounting a gasket requirement.)
Approved For Release 2005/02/10 : CIA-RDP75B00159 R000400040050-9