As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH FL390 NOSE LANDING GEAR CYCLED 5 TO 8 TIMES (VERY HARD) GEAR LIGHT CAME ON DURING EACH CYCLE. DESCENDED AND AT 8000 AND 250 KTS ONE MORE CYCLE. COMPLIED WITH LANDING GEAR CONTROL VALVE / MANIFOLD BLEED RATE CHECKLIST, DURING INSPECTION FOUND NOSE AND LEFT MLG UPLOCK SWITCH OUT OF LIMITS. READJUSTED NOSE AND LEFT UPLOCK SWITCH ALL WORK DONE IAW CHAP 32-20-00 OF THE CITATION 750 MM.