What was found
TOTAL TIME, 2,400 HOURS. ALL 4 BRACKETS USED TO ATTACH THE OXYGEN BOTTLE RACK TO THE SIDES OF THE REAR FUSELAGE WERE FOUND CRACKED DURING ANNUAL INSPECTION. SUSPECT CAUSE: BRACKETS NOT STRONG ENOUGH TO SUPPORT WEIGHT. REMAKE BRACKETS OUT OF THICKER MATERIAL AND BEND A LARGER 'L' SHAPED BRACKET. BRACKETS INSTALLED ON AFT FUSELAGE SIDE SKINS, PN 99470-800 AND PN 99470-01, FS 210.00.