As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, UPON GEAR RETRACTION RED NOSE GEAR AND GREEN NOSE GEAR LIGHTS REMAINED ILLUMINATED. LOUD AIR NOISE HEARD AND RETURNED TO PHL. REMOVED AND REPLACED NOSE GEAR LOCK ACTUATOR IAW AMM 32-33-21-4. CYCLED GEAR 5 TIMES. LEAK AND OPS CHECK GOOD. NO RED LIGHT. (M)