As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW INFLIGHT T1347/07JUL. NOSE LANDING GEAR WOULD NOT RETRACT. RETURNED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED NOSE GEAR PISTON AND ASSOCIATED SEALS. REPLACED UPPER AND LOWER SCISSOR LINKS. SERVICED STRUT ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION. (A)