As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH TO SPS LANDING GEAR WOULD NOT EXTEND. CREW RETURNED TO DFW AND DID AN EMERGENCY EXTENSION AND LANDED WITH NO FURTHER INCIDENTS. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR CONTROL VALVE IAW SAAB MM. OPERATIONAL AND LEAK CHECKS WERE GOOD AND AIRCRAFT WAS RETURNED TO SERVICE AFTER REPLACEMENT OF EXPLOSIVE BLOTS IN THE MAIN GEAR. (M)