As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR INDICATION SHOWED IT DID NOT RETRACT AFTER TAKEOFF. THERE WAS THE ASSOCIATED NOISE WITH AN EXTENDED NOSE GEAR. THE HANDLE WAS LOWERED ALL GEAR DOWN/LOCKED. A NORMAL LANDING WAS PERFORMED. FOUND NOSE STRUT SERVICING VALVE SEAL LEAKING,STRUT WAS FLAT. REPLACED VALVE ASSEMBLY, LEAK CHECKS GOOD IAW MM.