OL-27, Nakhon Phanom Royal Thai Air Base
(aerial photo (480 kbytes) from C. Jeppeson's INVERT site)
OL-27 (call sign BROMO) routinely hit targets in Laos and northern South Vietnam. OL-27 often worked in concert with OL-24 (call sign MILKY) located at Phu Bai/Monkey Mountain, RVN. One site or the other would be primary, with the other as backup. The Ho Chi Minh Trail's main exits from North Vietnam into Laos were Mu Gia, Ban Karai, Ban Raving, and Nape passes. (Map) These provided a number of targets on a continuing basis. OL-27 and OL-24 were also involved in Lam Son 719 early in 1971, when Arc Light strikes were called in to help prevent a complete rout of ARVN forces. OL-27 also struck targets on the Plain of Jars in concert with OL-23 at Udorn, and again with OL-25, against targets on the Bolevens Plateau in southern Laos. OL-27 was involved in the Linebacker I raid on the POL stores and railyard at Vinh, North Vietnam, on 9 April 1972. OL-27 also worked in concert with OL-23, at Udorn, against targets in northern Laos.
Earlier in the war, OL-23 and OL-27 were co-located at NKP. OL-23 later was moved to Udorn. OL-23 was the TSQ-96 system while OL-27 was the TSQ-81, shown in the photos below.
Photos of OL-27, 1970 - 1971
See also Byron Hukee's Combat Journal, covering his tour of duty as an A-1 Skyraider pilot flying out of NKP: A-1 Skyraider Combat Journal
Nakhon Phanom During the Secret War 1962-1975: http://aircommandoman.tripod.com/
The Vietnam Helicopter History site's nicely done section on Lam Son 719
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