Dusty,
I left the 47th at Forbes AFB in June 1967. There were no tail letters at that time. Also none on the 48th TCS. I arrived at CCK Taiwan June 1967 in the 345th. The letters were DH. The 50th and the 776th were also in the 314th Wing. There letters were DL and DE. I don't recall any on the Black 130's from Natrang Det 1 314th as having any letters. Did you know a maintence type named Joe Zepeda? He was my best friend in Forbes and CCK before going to Natrang.
Earl