What was found
AFTER LANDING FLAPS WOULD NOT RETRACT. REPLACED THE FLAP CONTROL VLV. A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. ACFT WAS RTS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER LANDING FLAPS WOULD NOT RETRACT. REPLACED THE FLAP CONTROL VLV. A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. ACFT WAS RTS.