What was found
AIRCRAFT LOST GYRO INSTRUMENTS AFTER TAKEOFF INTO IFR CONDITIONS. TROUBLESHOT PROBLEM AND FOUND CO-PILOTS ART HORIZON CASE LEAKING. CABIN PRESSURE DURING CLIMBOUT PRESSURIZED VACUUM SYSTEM CAUSING VACUUM FAILURE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT LOST GYRO INSTRUMENTS AFTER TAKEOFF INTO IFR CONDITIONS. TROUBLESHOT PROBLEM AND FOUND CO-PILOTS ART HORIZON CASE LEAKING. CABIN PRESSURE DURING CLIMBOUT PRESSURIZED VACUUM SYSTEM CAUSING VACUUM FAILURE.