标题: Fan Case Bracket Elongated Holes [打印本页] 作者: 航空 时间: 2011-4-24 12:21:50 标题: Fan Case Bracket Elongated Holes
作者: 航空 时间: 2011-4-24 12:22:00
CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes Gary Morriss Boeing Service Engineering CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes Elongated Bolts Holes in Fan Case Elongated Bolts Holes in Fan Case Elongated Bolts Holes in Bracket Elongated Bolts Holes in Bracket NNotoetebbolotltwweaerar Background Boeing and CFM have received three reports from one operator of looseness of several Boeing and one CFM brackets. – Looseness resulted in elongated holes in fan case and brackets. – In one instance, bolts separated. – All affected engines had over 14,000 hours. Loose brackets were found on B1, B4 and B8 flanges. CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes • Affected areas HYDRAULIC PRESSURE HOSE VIEW A-A FWD GEARBOX REF VIEW B-B CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes POWER FEEDERS 332A2930-37 OR -72 332A2910-125 OR 332A2930-57 ELONGATED HOLES IN THIS FLANGE AND THIS FLANGE HYDRAULIC PRESSURE LINE VIEW A-A (BOEING PARTS) CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes BOEING BRACKET EXAMPLE OF BOLT ELONGATION CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes ELONGATED HOLES IN FLANGE FUEL FLOW METER VIEW B-B (CFM PARTS) AFT LOOKING FWD P/N340-013-004-0 CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes ELONGATED HOLES IN FLANGE (BOTH BRACKET HOLES) CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, September 2002 WTT face to face or Export are Prohibited Fan Case Bracket Elongated Holes Actions In work Boeing and CFM team has been formed to investigate reports and determine root cause. – Plan to share interface data between brackets, bolts and fan case. Currently attempting to gather additional information. – Have asked reporting operator for additional information. – Have sent inspection requests to three operators asking for inspection of brackets on high time engines (over 10,000 hours). Results not yet available. – Currently analyzing two returned Boeing brackets. CFM to evaluate fan case repair – Evaluate fan case repair options.作者: yangy2397 时间: 2011-4-27 15:45:58
