Document Type: 
Document Number (FOIA) /ESDN (CREST): 
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Document Creation Date: 
December 28, 2016
Document Release Date: 
April 12, 2000
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Case Number: 
Publication Date: 
October 1, 1968
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PDF icon CIA-RDP78B04560A006400010047-7.pdf1.78 MB
Apprs yr Release 2000/06/30 : CIA-RDP78B04560A006400010047-7 NO FOREIGN DISSEM 25X1 C PHOTOGRAPHIC INTERPRETATION MEMORANDUM NORTH VIETNAMESE AIRFIELD CONSTRUCTION Declass Review, NIMA/DoD NPIC/R-119/68 OCTOBER 1968 GROUP 1 EXCLUDED FROM AUTOMATIC DOWNGRADING AND DECLASSIFICATION /30 : CIA-RDF'8B04560A006400010047-7 25X1 C Approved For Release 2000/06/30 : CIA-RDP78BO456OA006400010047-7 This document contains information affecting the national defense of the United States, within the meaning of Title 18, sections 793 and 794, of the U.S. Code, as amended. Its transmission or revelation of its contents to or receipt by an unauthorized person is prohibited by law. Approved For Release 2000/06/30 : CIA-RDP78BO456OA006400010047-7 RECORD COPY CUT TO COP I ES CUT TO COPS IES CUT TO COPIES DATE i Ved?For P g, DATE a Yease 2 DISPOSITION DATE(S) CUT TO COPIES RECEIVED OR ISSUED Dist. Unit ?640101004 xIMUM/O DATE NUMBER OF COPIES DATE D OR ISSUED NUMBER OF COPIES M0. DAY YR. RECEIVED OR ISSUED RECD ISS?D SAL MO. DAY YR. RECEIVE RECD ISS?D SAL A pproved For Release 000 6/3 : Cl -R P 8B 4560A006400010047- TITLE ? c NPIC/R-11968 October 196 8 S/NOFORN. X1C Approved For Release 2000/06/36ERTRDP78B04560A0064 NO FOREIGN DISSEM M O4268 25X1 C NORTH VIETNAMESE AIRFIELD CONSTRUCTION Since the imposition of US bombing restrictions on 31 March 1968, the North Vietnamese have made a concerted effort to repair and expand their operational airfields and to complete the two airfields which had previously been under construction (Figure 1). Outside assistance is suggested by the different construction techniques observed at the air- fields. When construction is completed, the North Vietnamese will have 25X1 D significantly extended the operating range of their aircraft in all direc- tions and increased their dispersal and recovery capabilities. The runway and taxiway at Yen Bai were completed in = after a no- ticeable increase in the rate of construction. The extremely crude con- struction method employed at this airfield (hand pouring concrete directly into pre-positioned molds) is similar to airfield construction through- out southern China. The same construction method has been recently em- ployed at Kep (Figure 2) where the airfield's capacity is being expanded by a runway extension and the conversion of a taxiway to a secondary run- way. Concrete slabs are being fabricated near Haiphong/Kien An Airfield for use in resurfacing the taxiway and repairing a parking apron. A simi- lar concrete fabrication area has been recently identified in the vicinity of Phuc Yen (Figure 3); however, the slabs are not currently in use at 25X1 D Phuc Yen airfield. In contrast to these two methods of concrete construction, the run- way at Bai Thuong was surfaced with Soviet-type pierced steel planking (PSP) between (Figure 4). This type of PSP has not been observed previously in North Vietnam. Although an adjacent natural sur- face strip had been operational at Bai Thuong, the surfacing of the main runway greatly increases the operating capability in the southern Pan- handle. Other airfield repair and expansion observed since the bombing cessa- tion includes the completion of a secondary runway at Hoa Lac, the filling of bomb craters at Vinh, and the initial construction of a possible run- way extension or overrun at Hanoi/Gia Lam. In addition to the airfield construction, there has been an increase in the North Vietnamese aircraft inventory. These concurrent developments suggest the North Vietnamese intend to expand their air operations. NPIC Project: 250016AJ - 1 - 25X1 C Approved For Rel sb, RQQ@,W, S 00010047-7 vwi~~ - M - N Approved For Release 29M/30 SIitERDP78B04560A00640(UfO-/68 NO FOREIGN DISSEM FIGURE 1. LOCATION OF AIRFIELDS, NORTH VIETNAM. - 2 - 25X1 C Approved For Releasgve@Md4603OM 010047-7 25X1 C r ~/6~ Approved For Release 206tL I~3T0 : CIA-RDP78B04560i 6 / 4fa 10047-7 NO FOREIGN DISSE FIGURE 2. CONSTRUCTION ACTIVITY, KEP AIRFIELD. 25X1 D 25X1 C Approved For Release 20 j T OA006400010047-7 NO FOREIGN DISSEM Approved For Release fU00/ QE~IA-RDP78B04560A0 NO FOREIGN DISSEM FIGURE 3. CONCRETE SLAB FABRICATION, PHUC YEN AREA. 25X1 D Approved For Release 2000/ NO FOREIGN DISSEM X30 %-7 25X1 C 06400010047-7 Approved For Relgiali000/06/ -RDP78B04560A006 1QA4767~ NO FOREIGN DISSEM 25X1 D 1 RUNWAY SURFACING, BAI TI-IUONG AIRFIELD. 25X1 C Approved For Release 2000/0J1 400010047-7 NO FOREIGN DI "&, 25X1 C Approved For Release 2000/06/30 : CIA-RDP78BO456OA006400010047-7 Approved For Release 2000/06/30 : CIA-RDP78BO456OA006400010047-7