FRAGILE TA
  1. TA susceptible to being stuck high or stuck low or stuck dead thetan. (SH Spec 02A, 6309C03)
  2. just one wrong date or duration in R3R or just one wrong RI in R3N and tone arm action ceases, the TA going way up or down and staying there. (HCOB 28 Jul 63)


Technical Dictionary