What was found
DURING CLIMB NUMBER ONE ENGINE ADI LIGHT REMAINED ON AFTER ADI SYSTEM WAS SWITCHED OFF, AIRCRAFT RETURNED TO BASE / KOPF.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB NUMBER ONE ENGINE ADI LIGHT REMAINED ON AFTER ADI SYSTEM WAS SWITCHED OFF, AIRCRAFT RETURNED TO BASE / KOPF.