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February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 1 Fan Rotor Module February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 2 Problem: • Flaking of dovetail coating on Fan Blades (PN 340-001-022-0); subsequent wear of blade and disk slot • ~1500 engines affected Corrective Actions: • Periodic fan blade and disk lubrication per CESM005 • Fleet upgrade to the undercut fan blade dovetail geometry PN 340-001-026 (new) and PN 340-001-027 (reworked) per SB 72-253 Fleet Support: • Fan blade rotable pool increased to 100 sets since Sept.01 • Three substantiated rework sites (APS, Chem-tronics, SNS StQuentin) Retrofit Status: • As of Jan 02, 1st relube on 63%, undercut on 37% of affected fleet • Steady implementation with current avg. rate ~60 sets/month Fan Blade Upgrade - Program Status Fan Rotor Module February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 3 CFM56-7B FAN PROGRAM IMPLEMENTATION as of January 02 1489 153 458 504 374 932 116 345 332 139 552 82 202 207 61 0 200 400 600 800 1000 1200 1400 1600 Fleet >5000 3000-5000 1500-3000 <1500 #engines #engines 1st Rel. Undercut ECSN Fan Rotor Module February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 4 Fan Blade Hot Re-form Repair • Repair 15-93392 approved • Repair site operational since Dec 2001 • One page repair implemented in the Engine Shop Manual Referenced #007 Current repair requests form tolerance defects defined for production parts – To date 15 fan blades over 60 received have been repaired, and released • Design office analysis on-going to open form tolerance criteria Fan Rotor Module February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 5 Fan Blade Patch Repair • Patch repair in progress Patch definition available Hardware available for validation by Apr 2002 Ingestion, and Vibratory certification tests scheduled 3rd Qtr 2002 • First Source operational in 2003 Fan Rotor Module February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 6 Blamap: Software for CFM56-7B Fan Blade mapping • Version 1.1 Improvement on blade pair moment weight test difference Get rid of “Window 3.11” environment Delivered in Oct 2001 • Version 2.0 All CFM engine capability Blamap V 2.0 will be available for Window 95/98/2000/millennium Target date: 3rd Qtr 2002 • These tool cannot be implemented on a server Software code is not compatible, would require a complete rework • Help Guide Notice to be written to guide airlines, and explain all tool functions • Implementation of Blamap Tool on the CFM Web under evaluation Fan Blade BLAMAP Tool Status Fan Rotor Module |
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