Narrative:

On takeoff, had unsafe gear indication and green nose gear light. Vectored to same area. Performed abnormal checklist. After consulting air carrier flight control, decision made to return to ZZZ. Approach, landing, and taxi-in were all uneventful. Mechanic found nose gear pin installed on post-flight inspection. Aircraft cleared for flight. Flight took off again for ZZZ1. First officer did walkaround prior to first takeoff. No flag on nose gear pin was visible from ground level. Mechanic who found pin reported that nose gear flag pin was balled up in nose gear compartment. No logbook write up of gear pins being installed or removed.

Google
 

Original NASA ASRS Text

Title: A B767-300ER WAS DISPATCHED IN NON COMPLIANCE WITH A NOSE GEAR PIN INSTALLED AND NO WRITE-UP FOR REMOVAL.

Narrative: ON TKOF, HAD UNSAFE GEAR INDICATION AND GREEN NOSE GEAR LIGHT. VECTORED TO SAME AREA. PERFORMED ABNORMAL CHKLIST. AFTER CONSULTING ACR FLT CTL, DECISION MADE TO RETURN TO ZZZ. APCH, LNDG, AND TAXI-IN WERE ALL UNEVENTFUL. MECH FOUND NOSE GEAR PIN INSTALLED ON POST-FLT INSPECTION. ACFT CLRED FOR FLT. FLT TOOK OFF AGAIN FOR ZZZ1. FO DID WALKAROUND PRIOR TO FIRST TKOF. NO FLAG ON NOSE GEAR PIN WAS VISIBLE FROM GND LEVEL. MECH WHO FOUND PIN RPTED THAT NOSE GEAR FLAG PIN WAS BALLED UP IN NOSE GEAR COMPARTMENT. NO LOGBOOK WRITE UP OF GEAR PINS BEING INSTALLED OR REMOVED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.