What was found
HSTCU STAB CH1 AND CH2 BREAKERS POPPED ON APU START. TRIED TO RESET BUT BOTH POP BACK OUT. REMOVED AND REPLACED HSTCU IAW AMM 27-41-01. OP CHECK GOOD. VERIFIED PART EFFECVITY. OK FOR SVC.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
HSTCU STAB CH1 AND CH2 BREAKERS POPPED ON APU START. TRIED TO RESET BUT BOTH POP BACK OUT. REMOVED AND REPLACED HSTCU IAW AMM 27-41-01. OP CHECK GOOD. VERIFIED PART EFFECVITY. OK FOR SVC.