PROGRESS LETTER NO. 23 CONTRACT NO. A-101 SYSTEM 4

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP81B00878R000300070008-9
• Release Decision: RIFPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 12, 2016
• Document Release Date: March 21, 2002
• Sequence Number: 8
• Publication Date: November 6, 1958
• Content Type: REPORT

COPY 2 OF $1
Progress Letter No. 23
Contract No. A-101
System 4
15 September 1958 to 1 November 1958
CMCC Document No. 163X5.92
Copy 2 of 10 Copies
6 November 1958
(This document contains a total of 3 sheets,
including this title sheet. )
Approved For Release 2002/06/'f3Ec 8 B00878R000300070008-9
This document contains information affecting the national defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C., Section 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohibited by law.
 Approved Fo elease 2002/00C 1 B008MA000300070008-9
i. General
During the period covered by this progress letter:
(1) All environmental, system, and flight tests were
successfully concluded on Serial No. 105.
(2) All unit environmental tests were concluded on Serial
No. 106, and system environmental tests were scheduled.
(3) Unit environmental test on Serial No. 107 was nearly
completed.
(4) Construction and subassembly test on the reworked
Serial No. 102 was advanced.
2. Serial No. 105
During this period, system environmental tests and
flight tests were performed on Serial No. 105. A detailed
report on the results of the system environmental tests
is now in preparation. A total of three flight tests were
successfully conducted.
3. Serial No. 106
All unit environmental tests for Serial No. 106 have
been successfully concluded. It is awaiting system
environmental test, which is tentatively scheduled for mid-
November 1958.
4. Serial No. 107
The majority of the unit environmental tests on Serial
No. 107 are completed. At the present rate of progress,
Serial No. 107 will be available for system environmental
tests about the time Serial No. 106 is undergoing such tests.
The terminal phase of the System 4 production is being
subjected to a pile=up in the test program. This has been
Approved For Release 2002/06/?klIF100878R000300070008-9
This document contains information affecting the national defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C., Section 793 and 794, the transmission or revelation of which In any manner to an unauthorized person is prohibited by law.
 Approved For`aolease 2002/06QE ETB00878O00300070008-9
due to two factors: the availability of only one system test
set; and, not always getting suitable tank facilities for
scheduled system environmental tests.
5. Planning
During the forthcoming period it is expected that:
(i) System environmental test on Serial No. 106 will be
completed and flight testing initiated.
(2) System environmental test on Serial No. 107 will be
done consecutively with Serial No. 106 and will be completed.
(3) Construction will be completed and unit environmental
test will be under way for Serial No. 10 2.
Approved For Release 2002/06/SE TB00878R000300070008-9
This document contains information affecting the national defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C.. Section 793 and 794, the transmission or revelation of which In any manner to an unauthorized person is prohibited by law.