As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON GEAR RETRACTION, LEFT INDICATION REMAINED RED IN EXCESS OF 12 SECONDS WITH SLIGHT VIBRATION. RETURNED TO PDX. ADJUSTED GEAR DOOR IAW MM 32-32-09 & 32-32-10 AND ADJUSTED TARGET IAW MM 32-61-01. SWUNG GEAR SEVERAL TIMES. OPS CHECK GOOD.