CFM56-7 Program Overview

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CFM56-7 Program Overview CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 2 ATO Rate Goal 0.010 Current rate 0.012 ATO Rate Goal 0.010 Current rate 0.012 Dispatch Reliability Goal 99.95 Current 99.96 Fleet Statistics • 12 month rolling average In-Service and Flight Line Issues Current month Previous month Fleet Experience Hours: 12,131,838 Cycles: 6,324,862 Engines: 2,258 Aircraft 1,058 Issue Status • HPSOV Switch • Oil/Fuel Delta P Switch • Fan Disk • Platform Aft Pin • LPT Blade (DAC) • N1 Vibration - Flight Line • EEC • HPT Blades • HMU - FMV • MSV position faults • N2 Tone - Flight Line CFM56-7 Scorecard Total IFSD Rate Goal 0.003 Current 0.003 Total ATO Rate Goal 0.020 Current 0.030 Total SV Rate Goal 0.100 Current 0.026 Total UER rate Goal 0.040 Current 0.015 Issue Leading Indicators VBV Guide Pad Delamination Booster Abradable Vane Corrosion LPT2 Nozzle Cracking AGB axial link (spherical bearing) Y G G Y Y R Y G G Y R CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 3 CFM56-7B Fleet at a Glance China World Fleet Aircraft in service 68 1058 Customers 11 126 Engines in service 151 2258 Cumulative engine hours 0.81 M 12.1 M Cumulative engine cycles 0.51 M 6.3 M CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 4 CFM56-7B In Service Status China World Fleet • Fleet leaders - Hours 11,948 17,326 - Cycles 8,690 10,850 - Hours without shop visit 11,948 17,326 - Cycles without shop visit 8,690 10,850 • 12 mo. total in-flight shutdowns 0.003 0.003 • 12 mo. total aborted takeoffs 0.020 0.030 • 12 mo. basic D&C% 99.98 99.96 • 12 mo. total shop visits 0.009 0.026 CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 5 • Air Algerie (7) • Air Berlin (25) • Air China (7) • Air Europa (13) • Air Pacific (3) • Alaska (21) • Aloha (5) • Amiri Flight (4) • American (76) • American Transair (18) • ARAMCO (3) • Braathens (11) • Britannia (5) • BWIA (6) • City Bird (3) • Continental (122) • COPA (8) • China Airlines (9) • China Southwest (7) • China Wuhan (2) • China Yunnan (4) • Delta (68) • Easyjet (10) • Excel (7) • El Al (5) • Euralair (6) • Futura (7) • Germania (10) • GOL Transportes (7) • Hainan (7) • Hamburg Intl (3) • Hapag-Lloyd (27) • Helios Airways (2) • Jet Airways (20) • Kibris (3) • KLM (17) • Korean (17) • Lauda (6) • LAPA (8) • Maersk (9) • Mandarin (3) • Midway (7) • Novair (3) • Pegasus (12) • Qantas (5) • RAM (9) • Ryanair (19) • Sahara (4) • SAS (53) • Shanghai (9) • Shenzen (8) • South African (16) • Southwest (118) • Sterling (6) • Suncountry (6) • Sunexpress (6) • TAROM (2) • Transaero (2) • Transavia (11) • THY (25) • Tunis (7) • US Navy (4) • Varig (7) • Virgin Blue (10) • Westjet (5) • Xiamen (7) • Xinjiang (4) • BBJ (67) • Others (33) 737-6/-7/-8/-900 Customers and Fleet Size CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 6 Age Distribution - Hours 0 50 100 150 200 250 300 0 50 100 150 200 250 300 Number of Engines ETSN Distribution CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 7 Age Distribution - Cycles 0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350 Number of Engines ECSN Distribution CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 8 IFSD Rate CFM56-7 IFSD Rate 0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 0.090 IFSD per 1K hours 120 Minute ETOPS Criteria Basic 12 Month Rolling Average Total 12 Month Rolling Average 180 Minute ETOPS Criteria CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 9 IFSD Causes - Total Last 12 Months Cause Quantity Corrective Action Oil Temperature Sensor 4 Redesign insert incorp’d in production (88T-481) June 01, Field containment issued SB 72-A336 TEO system logic revised in - SB 72-064 (S/W 7.B.M1) to preclude invalid oil pressure indication Fleet plan defined: Rework or replace at shop visit No 3 brg 2 No active program No 4 brg 2 New outer race material 3 rd Qtr 02 Radial Drive Shaft 1 Under Investigation Separation Starter Failure (P08) 1 Turbine thrust bearing - one case since EIS Engine Controls 1 EEC PSS flex failure CH B (CFMSB 73-0065) along with a VSV out of range fault on CH A of the HMU Engine controls 1 Eng. remained at at 85% N1 when commanded to idle - Under Investigation Control Alternator 1 Control alternator cover crack - oil loss Under Investigation Data for total rate: Lightening strike 1 Engine stalled due to lightening induced airflow disruption Pilot cut fuel to engine. Oil filter bypass 1 Chips in oil filter … previous starter failure - AMM improvements FOD - Bird Strike 1 No Active Program DMS Detector 1 DMS detector not completely engaged CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 10 Aborted Takeoff Rate CFM56-7 ATO Rate 0.000 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040 ATO per 1000 departures. Basic 12 mo Rolling Total 12 mo Rolling CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 11 Aborted Takeoff Causes - Last 12 months Cause Quantity Corrective Action Data for basic rate: MSV position fault 8 Cell 58 testing continues. Solenoid driver output not enough to activate solenoid under certain conditions. Containment and improvement options being defined Eng Control light 5 Fleet highlights published, maintenance hand book (No faults recorded) developed to aid mtc im FMC-CDU interrogation TBV Position fault 3 Root cause has identified fretting on EHSV armature =sticking. Design improvement options under review. Fuel Filter DP 1 New FFDP design P/N QA7995 field penetration progressing .. further mechanical switch improvements being evaluated. Software accommodation under consideration HMU - FMV 1 Product improvements for 12 of 13 known issues Evaluating revising EEC SW fault logic from 2 to 4 degrees to alleviate position & signal disagree faults Eng Control light 1 HPTACC TC fault - 7.B.M1 SB 73-064 Issued Oil Pressure Sensor 1 Under Investigation HMU - No response to 1 Manufacturing defect in HMU’s shutoff shuttle valve thrust lever input Population capped; approved plan to inspect at HMU shop visit N2 OverSpeed indication 1 N2 Speed Sensor replaced Data for total rate: Bird strike 3 N/A Operation 6 N/A Fumes in cabin - Mtnc 2 N/A HPC Blade Lock liberation 1 Assembly error: preventive actions in place A/C system APU Fumes 1 N/A CTAI Valve 3 Ref regulator improvements in work - 2nd qtr 2002 Misc A/C Indications 3 Thrust Reverser, Speed Brake, Cargo Door Yaw During Take Off Roll 1 Left MLG Brake did not release CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 12 Shop Visit Rate CFM56-7 Total Shop Visit Rate 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 199712 199803 199806 199809 199812 199903 199906 199909 199912 200003 200006 200009 200012 200103 200106 200109 200112 200203 Shop Visit per 1K hours 12 Month Rolling Average CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 13 Shop Visit Top Causes - Total engine Last 12 months Cause Quantity Corrective Action LPT Blade 48 DAC unique. Control actions in place. New blade 3rd 02 Proactive No 4 brg removal 14 Bearings from suspect lot of 47 Maintenance 7 N/A FOD/Other 6 N/A HPT Blade Blade Evaluation 5 Sampling program to evaluate HPT blade shank cracks Trailing edge cracks 5 SB 72-115 R1 issued to retire P05 blades at first shop visit. SB 72-326 recommends a 1000 cycle BSI interval HPT blade TE 2 Manufacturing process change (new core dies) - Identification of airfoil material loss population in process. HPT Blade separation 1 Telemetry testing on-going Fan Disk replacement 5 CESM 005 and S/B 72-253 issued. Testing planned for expand limits further TEO sensor 4 Redesign insert incorp’d in production (88T-481) June 01, Field containment issued SB 72-A336 TEO system logic revised in - SB 72- 064 (S/W 7.B.M1) to preclude invalid oil pressure indication Fleet plan defined: Rework or replace at shop visit VBV Pad disbondment 4 Bonding process improvement incorp’d into production. EEC software improvements 2 Qtr 02. Exploring mechanical fastening since failure in non-suspect population occured AGB hand cranking pad 3 Population defined. Imbalance in grinding tool root cause. Bearing replacement at shop visit - SB brg issued No. 3 Bearing 3 No active program No. 4 Bearing 3 New outer race material 3rd Qtr 02 Fan Blade Platform 1 Fan blade platform pin torque check SB to issue April 2002 CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 14 Total Unscheduled Engine Removals CFM56-7B Unscheduled Engine Removals 0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 199712 199803 199806 199809 199812 199903 199906 199909 199912 200003 200006 200009 200012 200103 200106 200109 200112 200203 UERs per 1k hours CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 15 CFM56-7 Dispatch Reliability 99.700 99.750 99.800 99.850 99.900 99.950 100.000 199712 199803 199806 199809 199812 199903 199906 199909 199912 200003 200006 200009 200012 200103 200106 200109 200112 200203 Successful Departures 12 Month Rolling Average CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 16 Delay and Cancellation Top Causes (Basic Engine Last 12 Months) Cause Quantity Corrective Action HMU: - FMV 43 Corrective action for 11 out of 12 failure modes defined - HPSOV 64 SB 73-067 to issued Feb 02 - Introduced SPST switch - TBV 25 EHSV design improvements under review - MSV 13 Dual current software approach (3Q’02) Ignition System 45 Ignition lead/exciter ... no anomalies Power switching relay available for Aircraft incorp. Soft time recommendation not universally incorp’d Utilize improved EEC S/W troubleshooting capability - Fleet Highlights published Feb 02 Fuel delta pressure switch 30 Potted switch improvement S/B 73-042 1 flight allowance added to DDPG MMEL PALL offering discount on switch upgrade Software accommodation under consideration Starter 36 P09 introduction June 02 - Carbon Seal and turbine stack improvements EEC 28 PSS modification SB 73-065. Improved ATP in place. Program improvements being monitored Oil delta P switch 22 Under Investigation N1 Vibration 18 Vibration Maint. Action published - CESM 007 issued Engine Control light 16 Fleet highlights published, maintenance hand book developed (No fault code) to aid mtc im FMC-CDU interrogation HPTACC Valve 11 Improved LVDT S/B 75-002. TCC thermocouple input eliminated in EEC S/W 7.B.M1 - SB 73-064 CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 17 CFM56-7B Revenue Service Status Entry into service December 1997 Operators/aircraft in service 126 / 1058 Cumulative engine hours/cycles 12,131,838 / 6,324,862 Daily utilization hours/cycles 9.5 / 4.9 Average flight leg 1.94 High time and cycle engines: hours/cycles 17,326 / 10,850 Total SVR (per 1,000 EFH) .026 Total IFSD rate (per 1,000 EFH) .003 Dispatch reliability 99.96 Meeting or Exceeding Reliability Goals

979199501 发表于 2011-4-12 00:26:22

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CFM56-7B TRAINING MANUAL ENGINE FAN TRIM BALANCE

kinran 发表于 2011-6-4 23:42:17

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bocome 发表于 2011-7-31 04:17:36

CFM56-7 Program Overview

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CFM56-7 Program Overview

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