航空 发表于 2011-4-15 08:57:47

CFM Abradable Metco Deterioration

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航空 发表于 2011-4-15 08:58:20

February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 1<BR>Abradable Metco Deterioration<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 2<BR>Abradable Metco Deterioration<BR>Field Experience : Stage 1<BR>• One case of stage 1 Booster Vane was identified with two damaged areas<BR>on the outer shroud coating during on-wing routine inspection (periodic<BR>Fan Blade lubrication)<BR> TSN/CSN : 8,311 hours / 2,875 cycles<BR> One area extends from 40 mm (1.575 in) long to 20 mm (0.787 in)<BR>wide at 7 o’clock position and other from 150 mm (5.906 in) long to<BR>20 mm (0.787 in) wide at 6 o’clock position<BR>– Damages were found within AMM limits - Total affected surface<BR>is equal to 40 cm2 (100 cm2 is permitted without in-service<BR>restriction)<BR> No FOD event reported<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 3<BR>Field Experience : Stage 1<BR>• One new case of stage 1 Booster Vane was found with either missing<BR>or flaking material close to 6 o’clock position on the outer shroud<BR>coating (periodic Fan Blade lubrication)<BR>– TSN/CSN : 12,312 hrs / 6,544 cycles<BR>– Damage was found within AMM limits<BR>– Second Engine installed in position #2 exhibits similar condition<BR> Engine #1 initially operated by another customer<BR> Engine experienced a birdstrike in July 1997<BR>&raquo; BSI performed and condition was found satisfactory<BR>Root Cause Not Understood<BR>Abradable Metco Deterioration<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 4<BR>Outer shroud coating<BR>missing<BR>Booster blade<BR>Engine position #1 - booster<BR>vane outer shroud coating<BR>condition<BR>Outer shroud coating<BR>missing<BR>Booster blade<BR>Engine position #2 - booster<BR>vane outer shroud coating<BR>condition<BR>Abradable Metco Deterioration<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 5<BR>Field Experience: Stage 4<BR>• Booster Vane from PCA engine 874120 coating missing at 6 o’clock<BR> TSN/CSN : 7,733 hrs / 6,145 cycles<BR> EDS analysis evidenced presence of significant rate Cl, S &amp; Na<BR>– Tap water content highly suspected (damages after water wash)<BR>• One case of Booster Vane (Stages 1, 3, 4) was found with local<BR>flaking on the outer shroud coating during engine overhaul<BR> TSN/CSN : 9,416 hours / 3,784 cycles<BR> Damage was found out of ESM limits<BR> Root cause demonstrated to be incorrect engine preservation after shop<BR>visit<BR>Abradable Metco Deterioration<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 6<BR>One engine found with Booster Vanes showing eroded / missing material on<BR>the outer shroud coating<BR> TSN/CSN : 9,233 hrs / 3,180 cycles<BR> Stage 1 = Erosion<BR> Stage 4 = Unknown<BR> Not expertized yet<BR>Corrosion Sources Under Study<BR>Abradable Metco Deterioration<BR>February 2002 WTT face to face CFMI / Boeing Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited 7<BR>Investigation<BR>• Engineering activity has been launched on PCA engine 875-201 currently in<BR>disassembly phase<BR> Visual inspection already revealed flaking on Stage 1<BR>– Results expected by end of Feb 2002<BR>• Evaluation of chemical products impacts on abradable aging<BR> High chlorine rate in tap water<BR> Engine cleaning products<BR>Abradable Metco Deterioration<BR>PCA Engine 875-201

kinran 发表于 2011-6-4 23:24:07

:victory: :victory:

bocome 发表于 2011-7-31 04:46:24

CFM Abradable Metco Deterioration
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