What was found
WHILE COMPLYING WITH EA 53300036-003, COCKPIT WINDOW ENCLOSURE MOD PER AD 2002-21-09, DOUBLER P/N: 991505-7 WAS FOUND CRACKED, 1.0" AND .875. REPLACED IAW EA 53300036-003 THROUGH 017 AND WO 600265187, S/B DC9 53-290 AND DWG SR09530268.