CFM56-7 Program Overview

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航空

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

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CFM56-7 Program Overview