What was found
DR EPAS SENSORS 4L MESSAGE RETURNED. WILL NOT CLEAR WITH C/B RESETS OR GRND TESTS. SUSPECT EPAS MODULE(DR ASSIST BOTTLE) WILL REQUIRE REPLACEMENT. ADDED PIC SQUIB PN IF NEEDED 48000306-1 NIS IAD. ADD EMP:221991 REMOVED AND REPLACED L4 DOOR ASSIST EPAS BOTTLE PER AMM IPC REFERENCE # 52-11-22 52-11-22-00A-720A-A. PERFORMED SYSTEM TEST OPS CHK OK. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1832917 SN OFF 0711 C/W RII REQUIREMENTS - VERIFIED PART EFFECTIVITY, WITNESSED TORQUE, SAFETY & SECURITY & SYSTEM CHECKS GOOD. BOTTLE, DOOR AS OFF 78-5211-9-0009 4071 ON 78-5211-9-0009 4491