What was found
ON CLIMB OUT, NOTED NO DUCT PRESSURE ON LT DUCT PRESSURE GAUGE, COULD ONLY RESTORE BY OPENING ISOLATION VALVE. PERFORMED FIM 36-10-00-810-804 AND 805 SYSTEM CHECK NORMAL. (K)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ON CLIMB OUT, NOTED NO DUCT PRESSURE ON LT DUCT PRESSURE GAUGE, COULD ONLY RESTORE BY OPENING ISOLATION VALVE. PERFORMED FIM 36-10-00-810-804 AND 805 SYSTEM CHECK NORMAL. (K)