As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R2 DOOR SLIDE INDICATION. FOUND SENSORS COVERED IN LUBE & HAVING A BUILDUP OF DEBRIS, REMOVED DEBRIS. BOTH SENSORS WITHIN PROXIMITY IAW AMM 25- 66, CYCLED DOOR ARM LEVER MULTIPLE TIMES ARMED LIGHT INDICATION OPERATES NORMALLY. (1440864)