As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, NOTICED STANDBY ISI WAS BLANK ,CIRCUIT BREAKER WAS IN APPROX 15 MIN LATER ISI CAME BACK ON, OPERATED NORMALLY FOR REMAINDER OF FLT. DIVERTED AND ACCOMPLISHED A UNEVENTFUL LANDING. R & R ISI IAW AMM TASKS 34-12-16-000-801/400-801 & HS 34-0026 DUE TO ISI UNIT HAVING HISTORY OF PR. C/W PITOT/STATIC SYS LEAK CHECK IAW TC 6341102. LEAK CHECK PASSED. ISI OP CHECKS GOOD IAW AMM TASK 34-12-16-710-801. RETURNED TO SERVICE.