What was found
EMERGENCY LIGHTS AT DOOR 4R DOES NOT LIGHT UP DURING OPS CHECK. MAINT MSG:33-11208 & 33-11408 REPLACEMENT OF WCU & WBU CLASS 8 AT DOOR 4R C/OUT IAW AMM 33-51-07-01A-520/720A-A & 33-51-07-02B/720A-A. TEST SATIS. REPLACEMENT OF WCU & WBU CLASS B AT DOOR 4R C/OUT IAW AMM 33-51-07-01A-520/720A-A & 33-51-07-02B-520/720A-A. TEST SATISFACTORY. REPLACEMENT OF WCU & WBU CLASS 8 AT DOOR 4R C/OUT IAW AMMM 33-51-07-01A-520/720A-A & 33-51-07-02B/720A-A. TEST SATISFACTORY.