OBSTACLE WARNING SYSTEM

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03300A001900010025-2
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: May 23, 2011
• Sequence Number: 25
• Publication Date: November 8, 1956
• Content Type: MEMO

Sanitized Copy Approved for Release 2011/05/23: CIA-RDP78-0330OA001900010025-2
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8 November 1956
MEMORANDUM FCfft: APD PANEL
SUBJECT: Obstacle Warning System
1. In accordance with the attached memorandum from C/PP,
it is requested that the APD Panel set up project P-196, Obstacle
Warning System.
2. Proposals have been discussed with and they
are shortly going to submit one covering the design, development,
and construction of a prototype 3-color X-band radar device.
C'
TSS/APD
Distribution:
Orig. - P-19.6.via Panel
Chrono
TSS/AP~
Vhf
CONFIM E
Sanitized Copy Approved for Release 2011/05/23: CIA-RDP78-0330OA001900010025-2
 Sanitized Copy Approved for Release 2011/05/23: CIA-RDP78-0330OA001900010025-2
CONFIDENTIAL
MEMORANDUM $ 01: Chief, Technical Services Staff
THRU: DD/ P Materiel Board
SUEJECT: Investigation of Terrain Warning Devices
1. The dangers inherent in flying aircraft at miniznam sate
altitedes make it imperative that a terrain warning device be pro-
cared to assist crews In the completion of their hazardous missions.
Z. Accordingly it is requested that your staff initiate a program
looking toward the development of techniques and devices having the
following capabilities:
a. Present to the crew an audible or visible warning of
obstructions in the flight path.
b. Present the warning in sufficient time to allow for
corrective action.
e. Be of a mature to be operable during adverse weather
conditions, inch as snow and rain.
d. Has minimum dstectability by enemy counter measures.
e. Be of such weight and size as to be easily installed in air-
craft.
f. B. adaptable to the electrical power systems in the RD-69.
S. Have a high degree of reliability.
CON FIDE ?NjI AAL
Sanitized Copy Approved for Release 2011/05/23: CIA-RDP78-0330OA001900010025-2
 Sanitized Copy Approved for Release 2011/05/23: CIA-RDP78-0330OA001900010025-2
3. The Air-Maritime #~ 4 rs sAst the I?1)/ P Material
Board to process end ostabllish specific requirements which will be
forwarded to T$S when compiled.
4. Sine* the RD-49's are currently being modified for operational
use, it is requested that the Air-Msritixne Division be informed of any
devices which meet the above criteria and are readily available for
instsUstion. While an interim system would be acceptable initiallyl,
since it is anticipated that this r quiremeat will sadat for the next five
or seven years, it is d.sir*ble that a sophisticated system meeting
the criteria listed in paragraph 2 above be developed. For additional
informatisn ple$ae eau
Chief
psychological & Paramilitary Staff
Cr), IN FIDE
Sanitized Copy Approved for Release 2011/05/23: CIA-RDP78-0330OA001900010025-2