HOA LAC AIRFIELD ELECTRONIC FACILITIES NORTH VIETNAM

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T05929A002400130002-9
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: November 8, 2006
• Sequence Number: 2
• Publication Date: April 27, 1967
• Content Type: REPORT

Approved For Release 2006/11/09: CIA-RDP78TO5929AO02400130002-9
TOP SECRET
(c) NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
ATTACHMENT TO
27 APRIL 1967
PAGE 1 58
HOA LAC AIRFIELD ELECTRONIC FACILITIES
NORTH VIETNAM
2101N 10530E
1. SIGNIFICANCE:
THIS BRIEFING DEPICTS ELECTRONIC FACILITIES ASSOCIATED WITH
HOA LAC AIRFIELD
2. LOCATION:
HOA LAC AIRFIELD IS LOCATED ONE NM WEST OF HOA LAC AND 6.5 NM
SOUTH OF SON TAY.
3. MISSION READOUT:
REVEAL THE ELECTRONIC FACILITIES ASSOCIATED WITH HOA LAC AIR-
FIELD. THESE FACILITIES INCLUDE AN ILS SYSTEM, AN AW/GCI SITE, AND
A WEATHER STATION.
THE ILS SYSTEM INCLUDES AN INNER MARKER BEACON APPROXIMATELY
3,100 FEET OFF EACH END OF THE RUNWAY, AN OUTER MARKER BEACON ABOUT
3.0 NM OFF EACH END OF THE RUNWAY, AND A PROBABLE GLIDE SLOPE TRANS-
MITTER.
THE AW/GCI SITE CONSISTS OF A BAR LOCK-TYPE RADAR AND A SIDE
NET RADAR.
THE WEATHER STATION IS SIMILAR TO THOSE OBSERVED THROUGHOUT
NORTH VIETNAM.
These notes have been prepared for briefing purposes only and should not be used for detailed analytical work. Their use
should be restricted to the particular briefing board(s) they were prepared for and must be considered valid only for the re-
porting period as indicated by the date of issue. For information concerning these notes contact Chief, Collateral Support
Division, NPIC.
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TOP SECRET
Approved For Release 2006/11/09: CIA-RDP78TO5929AO02400130002-9
 Appirn ed For Release 2006/11/09: CIA-RDP78TO5929AO02400130002-9
TOP SECRET
(e) NATIONAll PH
RAPHIC INTERPRETATION CENTER
ATTACHMENT TO
27 APRIL 1967
PAGE 2
ALSO OBSERVED NEAR THE SOUTHEAST OUTER MARKER BEACON IS HA NOI
SAM SITE B27-2 (180)
AND SURROUNDING AREAS. OBSERVED IN THIS AREA IS THE CHIEU DONG RADAR
SITE, THE NORTHWEST INNER MARKER BEACON, A PROBABLE GLIDE SLOPE TRANS-
MITTER, A WEATHER STATION, THE SOUTHEAST OUTER MARKER BEACON, AND
HA NOI SAM SITE C28-2 (13)
4. REMARKS:
ALTHOUGH ALL OF THE ELECTRONIC EQUIPMENT, EXCEPT THE NORTHWEST
OUTER MARKER BEACON, HAVE BEEN OBSERVED ON BLUE SPRINGS PHOTOGRAPHY
IT WAS DIFFICULY TO ESTABLISH THE OVERALL PATTERN OF THE FACILITIES
UNTIL THE LOW-LEVEL PHOTOGRAPHY WAS CORRELATED WITH
These notes have been prepared for briefing purposes only and should not be used for detailed analytical work. Their use
should be restricted to the particular briefing board(s) they were prepared for and must be considered valid only for the re-
porting period as indicated by the date of issue. For information
Division, NPIC.
TOP SECRET
Approved For Release 2006/11/09: CIA-RDP78TO5929AO02400130002-9
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NATIONAL PHOTOGRAPHIC RRERPRETATION CENTER
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NORTH VIETNAM
21-01N 105-30E
NORTHWEST INNER MARKER BEACON
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Approved For Release 2006/11/09: CIA-RDP78TO5929AO02400130002-9
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SOUTHEAST OUTER MARKER BEACON
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 Approved For Release 2006/11/09: CIA-RDP78T05929A002400130002-9
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