What was found
PDX FLIGHT NR 2423: FUSELAGE DOOR WARNING LIGHT ILLUMINATED PASSING 17,500 MSL AT 5.0 PSID. SERVICE DOOR RIGHT REAR WAS PROBLEM. DOOR WARNING LIGHT REMAINED ON UNTIL LEVEL 10,000 MSL AT 3.5 PSID. LIGHT REMAINED ON AND STEADY UNTIL LANDING. MAINTENANCE REPAIRED BROKEN WIRE AT AFT SERVICE DOOR HINGE. OPS CHECK NORMAL IAW AMM 31-62-00-710-801 AND SUBTASK 31-62-00-701-801(A) ITEM 4 AND (B). NO OTHER DEFECTS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.