What was found
BUSS BAR ON EXTERNAL SUPPLY NEGATIVE POST HAD NO GROUND. BUSS BAR HAD MASKING TAPE ON IT WHEN FACTORY HAD PAINTED IT AND INSTALLED WITHOUT REMOVING TAPE. THEREFORE NO GROUND FOR EXTERNAL SUPPLY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BUSS BAR ON EXTERNAL SUPPLY NEGATIVE POST HAD NO GROUND. BUSS BAR HAD MASKING TAPE ON IT WHEN FACTORY HAD PAINTED IT AND INSTALLED WITHOUT REMOVING TAPE. THEREFORE NO GROUND FOR EXTERNAL SUPPLY.