CFM56-5B_Program_Overview

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CFM56-5B
Program
Overview
CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 2
YY
Total Shop Visit Rate
Goal 0.100
Current rate 0.036
Total ATO Rate
Goal 0.020
Current rate 0.014
Total IFSD Rate
Goal 0.003
Current rate 0.005
Basic Dispatch Reliability
Goal 99.95
Current rate 99.98
CFM56-5B Scorecard
In-Service Issues
Total UER Rate
Goal 0.040
Current rate 0.029
Through
March 2002
Current
Fleet Statistics
12 mo. rolling avg.
Previous
Issue Status Corrective Action
• DAC LPT S-1 blade Impl field plan, logic change for new blade, 2Q02 intro
• Fan OGV cracking Rev AMM limits, new mat’l defined
• HPTB shank cracks M10P01 prod intro Oct 01, fld plan-acquire data
• RDS bearing failure Failure mode id’d, on-wing insp. SB 72-407 & shop SB 72-409 issued
• S-5 booster bld failure SB 72-391 & shop SBs 72-397, 72-418, 72-420
Issue Status
• VSV feedback faults Evaluating events related to erratic F/B signal
• EMCD system Inspection SB 72-414, visual indicator malfunction - root cause identified
Visual indicator availability
Leading Indicators
Y
G
G
G
G
G
Y
CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 3
CFM56-5B Fleet at a Glance
Through March 2002
China World Fleet
Aircraft in service 48 530
Customers 3 42
Engines in service 104 1144
Cumulative engine hours 0.6 M 7.3 M
Cumulative engine cycles 0.4 M 4.7 M
CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 4
CFM56-5B In Service Status
Through March 2002
China World Fleet
• Fleet leaders
- Hours 11567 17202
- Cycles 7852 16377
- Hours without shop visit 11567 16582
- Cycles without shop visit 7745 8893
• 12 mo. total in-flight shutdowns 0.0 0.0036
• 12 mo. total aborted takeoffs 0.0 0.0089
• 12 mo. basic D&C% 99.99 99.97
• 12 mo. total shop visits 0.0347 0.0036
CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 5
Issue Program Plan/Status
• RDS failure - Root cause dentifed on-wing insp. SB 72-407 & shop SB 72-409 issued
• # 3 bearing failure - Inconclusive - extensive bearing damage, in Winstead population
• Oil filter drain - Implemented AMM procedure modification
• #4 Bearing failure - Bearing w/ 32CDV13 matl available end 1Q02, CESM 054 issued
• Hi oil temp - Excessive oil in system, inconclusive - isolated case
• Flameout - Under investigation
CFM56-5B In-Flight Shutdowns
12 Month Rolling Average - Through March 2002
0
1
2
3
4
5
RDS
failure
IPCV -
Aircraft
Oil filter
drain
Hi Oil
Temp
Flameout
Nr4
Bearing
number of eventsProgram Available
0.0000
0.0010
0.0020
0.0030
0.0040
0.0050
0.0060
0.0070
Mar-00
May-00
Jul-00
Sep-00
Nov-00
Jan-01
Mar-01
May-01
Jul-01
Sep-01
Nov-01
Jan-02
Mar-02
rate /1000 EFH
Basic Total
.0036
.0048
CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 6
0
1
2
3
4
Bird Strike
Slow accel
N2 SNSR
HPT blades
LPT Overtemp
H M U
Tflex anomaly
number of events Program Available
CFM56-5B Aborted Takeoffs
12 Month Rolling Average - Through March 2002
Issue Program Plan/Status
•HMU - Auto accel and power loss - under investigation
• HPT blade - P01 T/E root crack, SB 72-259 (non/P) & 72-271 (/P)
introduced improved blade
• LPT Overtemp - LPT damage sustain during a previous hot start
•Slow accel - Ps3 drop - investigating
• Tflex anomaly - Loss of Tflex mode - investigating
•N2 sensor - SB 72-0345 R2 - Improved N2 Sensor
0.000
0.005
0.010
0.015
0.020
0.025
0.030
Mar-00
May-00
Jul-00
Sep-00
Nov-00
Jan-01
Mar-01
May-01
Jul-01
Sep-01
Nov-01
Jan-02
Mar-02
rate /1000 EFH
Basic Total
.014
.009
CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 7
0 5
10
15
20
25
30
35
40
45
Starter
Valve
Fuel Leak
Air Starter
Oil leak
HMU
Gaskett
Servo fuel
HPTCC fuel
leak
Ecam
warning
IDG fuel
hose
ECU
number of events
Program Available
CFM56-5B Departure Reliability
12 Month Rolling Average - Through March 2002
Issue Program Plan/Status
• Fuel leaks - Mainly related to the VBV Gear Motor - SB 75-021
• HMU - OSG and HPSOV faults - Improvements in place
• ECU - No systemic problems
• Servo gasket oil leaks - Deterioration of fluoro-silicone seal by Mobil 291, hard-time
seal, new Viton seal material - 2Q02
• VBV system - Reliability improvements available - SB 75-007
• T12 sensor - Durability improvements - SB 73-080 Rosemount sensor:
SB 73-085 Auxitrol sensor, Auxitrol quality escape
• IDG fuel hose - Retrofitting with improved metal design
• Starter valve - SAV freezing - dual actuator SB 80-007; slow closure - valve
corrosion, monitoring situation
• HPTCC fuel leak - Orange peal condition on piston - replace piston at shop visit
99.89
99.91
99.93
99.95
99.97
99.99
Mar-00
May-00
Jul-00
Sep-00
Nov-00
Jan-01
Mar-01
May-01
Jul-01
Sep-01
Nov-01
Jan-02
Mar-02
Basic
Total
99.96
99.98
CFM56 Operators Conference – May 21 - 22, 2002 CFM Proprietary Data Unauthorized Disclosure Prohibited 8
CFM56-5B Shop Visits
12 Month Rolling Average - Through March 2002
Issue Program Plan/Status
• S-5 booster blade - Insp. SB 72-391 & shop SBs 72-397, 72-418, 72-420
• HPT blade T/E cracks - Current blade significantly reduces T/E root cracks
• DAC combustor chamber - Retrofit of DAC IIC with DAC II PIP - SB 72-181
• DAC S-1 LPT blade - Retrofit of re-contoured in progress, redesign blade 1 Q 02
• #4 bearing - Retrofit of quality escape
• RDS failure - Root cause dentifed on-wing insp. SB 72-407 & shop
SB 72-409 issued
• #3 bearing - Windsted ball issue, potential hard particle contamination
0
5
10
15
20
25
HPT blades
S-1 LPT blade (DAC)
Nr4 bearing retro
DAC 2C comb retro
S-5 booster blade
Nr3 bearing failure
Maintenance
Radial drive shaft
Oil system
HPT Disk Life limit...
FOD
Vibration
number of visits
Program Available
0.010
0.020
0.030
0.040
0.050
0.060
Mar-00
May-00
Jul-00
Sep-00
Nov-00
Jan-01
Mar-01
May-01
Jul-01
Sep-01
Nov-01
Jan-02
Mar-02
rate /1000 EFH
Basic
Total
0.036

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CFM56-5B_Program_Overview

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