Located on the Burma Road in Xiang Yun county about 80km from Kunming and another 100km from the front in western Yunnan. Wartime spelling "Yunnani". Also spelled Yunnanyi or Yunnan-yi.
Runway was 6,000' long, elevation 6,000' oriented north to south. Base operations were on the western side of the runway, along with most of the aircraft revetments. The hardstand is on the northern end.
Yunnanyi was originally intended as a field for American Volunteer Group (AVG) instructors to train Chinese pilots. Following the outbreak of the Pacific War and the loss of the Burma Road, Yunnanyi became the westernmost airfield on the China side of the "Hump" route from India. This new status resulted in its constant garrisoning by the fighter squadrons from the China Air Task Force (CATF) and 14th Air Force.
During the war, Yunnani became a major base for supplies and equipment for the training of Chinese troops bound for the Salween front. During August 1942, China Air Task Force (CATF) B-25s moved from Central China to Yunnani.
During December 1944 - January 1945 "Operation Grubworm" 10th Air Force, Air Transport Command lands Chinese Army troops and equipment at Yunnani.
Japanese missions against Yunnani
December 26, 1942 - January 16, 1943
December 26, 1942
(10th AF) A large force of enemy aircraft attempt to raid Yunnani Airfield. They are intercepted
by P-40s of the 16th Fighter Squadron, 51st Fighter Group, and four Japanese
aircraft are shot down.
January 16, 1943
China Air Task Force P-40s intercept Japanese
aircraft that attempt a strike on Yunnani and claim seven Zekes shot down in
the air battle.
American units based at Yunnani
23rd FG, 75th FS (P-40)
Chanyi January 20 - March 31, 1943 Lingling
23rd FG, 74th FS (P-40) Kunming March 12, 1943 - ?
51st FG, 25th FS (P-40, P-51) Dinjan September 14, 1943 - ? returns Leangshan Feb 4, 1945
341st BG, 22nd BS (B-25 det)
Yangkai April 29 - May 6, 1944 Yangkai returns Nov 5, 1944 - Jan 20, 1945 Yangkai
51st FG, 16th FS (P-40 det)
Chengkung May 1 - July 1, 1944 Chengkung
443rd TCG, 27th TCS (C-47)
Sylhet May 21, 1944 - ?
51st FG, 449th FS (P-38 det) Chengkung July 23, 1944 - ?
1st CCG, 2nd CCS (C-47 det) Sylhet September 11 - 18, 1944 Sylhet
1st CCG, 4th CCS (C-47 det)
Sylhet September 11, 1944 - October 11, 1944 Sylhet
1st CCG, 1st CCS (C-47)
Sylhet September 15, 1944 - October 2, 1944 Sylhet
1st CCG, 3rd CCS (C-47)
Sylhet September 16, 1944 - October 2, 1944 Sylhet
14th AF, 35th PRS (F-5)
Kunming September 16, 1944
443rd TCG, 27th TCS (C-47) ? - February 15, 1945 Chengkung
51st FG, 449th FS (P-38) ? - March 1, 1945 Chengkung
14th AF, 11th CCS (C-47) Dinjan May 14 - June 20, 1945 Luliang
Flying Tigers: Claire Chennault and the American Volunteer Group by Daniel Ford
Sharks over China: The 23rd Fighter Group in World War II by Carl Molesworth
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February 4, 2018