CFM56-7 Scorecard

航空

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CFM56-7 Scorecard

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979199501

CFM56-7 Starter Reliability

航空

CFMI PROPRIETARY INFORMATION
ATO Rate
Goal 0.010
Current rate 0.012
ATO Rate
Goal 0.010
Current rate 0.012
Dispatch Reliability
Goal 99.95
Current 99.94
Fleet Statistics
• 12 month rolling average
thru Jan 31
• Air Algerie (4)
• Air Berlin (14)
• Air China (8)
• Air Europa (8)
• Air Pacific (3)
• Alaska (13)
• American (50)
• ARAMCO (3)
• Axon (2)
• Azzura (2)
• Braathens (9)
• Britannia (5)
• BWIA (4)
• Continental (93)
• COPA (6)
• China Airlines (11)
• China Southwest (3)
• China Yunnan (4)
• Delta (38)
• El Al (5)
• Euralair (4)
• Futura (5)
• Germania (14)
• Hainan (7)
• Hapag-Lloyd (20)
• Jet Airways (14)
• KLM (13)
• Korean (8)
• Lauda (4)
• LAPA (8)
• Maersk (8)
• Midway (5)
• Novair (3)
• Pegasus (3)
• RAM (9)
• Ryanair (12)
• Sabre (4)
• Sahara (3)
• SAS (49)
• Shanghai (5)
• Shenzen (3)
• South African (6)
• Southwest (91)
• Sterling (5)
• Sunexpress (4)
• Transavia (10)
• THY (23)
• Tunis (7)
• Varig (5)
• Xiamen (6)
• BBJ (48)
• Others (19)
In-Service and Flight Line Issues
Current month
Previous month
Fleet Experience
Hours: 6,089,214
Cycles: 3,145,614
Engines: 1,555
Aircraft 726
Issue Status
T
• Starter
• HPSOV Switch
• No. 4 bearing
• DAC durability
• Oil/Fuel Delta P Switch
• Fan Blade/Booster Flange/Platform
• LPT Blade (DAC)
• N1 Vibration
• EEC
• Acoustic Panel
• Ignition System
• Ps3 Line “B” Nut Connections
Y
CFM56-7 Scorecard
G
G
Y
G
R
G
Y
Total IFSD Rate
Goal 0.003
Current 0.003
Total ATO Rate
Goal 0.015
Current 0.014
Total SV Rate
Goal 0.100
Current 0.028
Total UER rate
Goal 0.040
Current 0.015
G
Y
Leading Indicators
Issue
HPT Blades
G
Y
CFMI PROPRIETARY INFORMATION
Age Distribution - Hours
0
50
100
150
200
250
300
350
0
50
100
150
200
250
300
350
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000
Number of Engines
ETSN Distribution
CFMI PROPRIETARY INFORMATION
Age Distribution - Cycles
0
50
100
150
200
250
300
350
400
450
500
0
50
100
150
200
250
300
350
400
450
500
1000 2000 3000 4000 5000 6000 7000 8000 9000
Number of Engines
ECSN Distribution
CFMI PROPRIETARY INFORMATION
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
199712
199802
199804
199806
199808
199810
199812
199902
199904
199906
199908
199910
199912
200002
200004
200006
200008
200010
200012
IFSD per 1K hours
120 Minute ETOPS Criteria
Basic 12 Month Rolling Average
Total 12 Month Rolling Average
180 Minute ETOPS Criteria
CFMI PROPRIETARY INFORMATION
IFSD Causes - Total Last 12 Months
Cause Quantity Corrective Action
#4 Bearing 3 MCD Inspection - SB 72-180
New outer race material - 4th Qtr 01
Maintenance error 3 N/A
Ps3 Line 2 Short term plan to triple torque in Prod
Long term plan is to introduce lock wire in Prod
Starter 1 Improved Gear Design - October 99
S/Bs 80-004, 80-005 issued
HPT blade 1 No Root Cause Established
Oil Temperature Sensor 1 Over-torque root cause: redesign insert
for improved durability
Oil Temperature Indication 1 No Root Cause Established
Fuel Filter Rotation 1 Boeing issued fleet inspection recommendation
Incorrect o-ring installed prior to delivery. CFMI
has standardized Viton as o-ring for all CFM56
CFMI PROPRIETARY INFORMATION
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
199712
199802
199804
199806
199808
199810
199812
199902
199904
199906
199908
199910
199912
200002
200004
200006
200008
200010
200012
ATOper dep.
Basic 12 mo Rolling
Total 12 mo Rolling
CFMI PROPRIETARY INFORMATION
Aborted Takeoff Causes - Last 12 months
Cause Quantity Corrective Action
Data for basic rate:
MSV position fault 2 EEC/HMU replaced - Root caused not
established
HPC IGV Lever Arm 1 Field inspected engines vertically side
cased at Shop. Assy aids incorporated
in production.
Fuel Filter DP 1 Introduced FFDP with potting in
connector housing , SB 73-042
issued
HPT Blade 1 HPT blade failure - Under investigation
Fuel Pump 1 Failure to attain T/O power - under
investigation
Data for total rate:
Bird strike 3 N/A
Eng Cont Light 2 No Fault Codes reported
Maintenance 1 N/A
Operation 1 Runway excursion
CFMI PROPRIETARY INFORMATION
Shop Visit Rate
CFM56-7 Total Shop Visit Rate
0.000
0.010
0.020
0.030
0.040
0.050
0.060
0.070
0.080
199712
199802
199804
199806
199808
199810
199812
199902
199904
199906
199908
199910
199912
200002
200004
200006
200008
200010
200012
Shop Visits per 1K hours
12 Month Rolling Average
CFMI PROPRIETARY INFORMATION
Shop Visit Causes - Total engine Last 12 months
Cause Quantity Corrective Action
LPT Blade 60 DAC unique. Control actions in place.
Maintenance 11 N/A
HPC Blade 8 Clearances adjusted, top case and blending repairs in place
FOD/Other 6 N/A
#4 Bearing 5 MCD Inspection - SB 72-180, New outer race material 4th Qtr 01
Core vibration 2 Top case core balance procedure developed.. Rotor stack improvements
incorp’d into production.
Volcanic ash 2 N/A
HPT Blade separation 2 In-investigation
HPC IGV bridged 1 One time inspection of engines vertically top cased at shop. Assy aids connector mis-Assy
incorporated in production. Affected field population inspected
TEO sensor 1 Over-torque root cause: Redesign inserts for additional robustness. TEO
system logic to be revised in next S/W revisionto preclude invalid oil pressure indication.
Oil Leak 1 Aft sump oil supply leak - Assy error
VBV Pad disbonndment 1 N/A
Combustor distress 1 Under investigation
Metal in HPT 1 HPT air manifold spalsh plate --- CFM56-7 S/B 72-167
Air manifold
FWD sump 1 Under Investigation
Oil leak
CFMI PROPRIETARY INFORMATION
CFM56-7 Dispatch Reliability
99.70
99.75
99.80
99.85
99.90
99.95
100.00
199712
199802
199804
199806
199808
199810
199812
199902
199904
199906
199908
199910
199912
200002
200004
200006
200008
200010
200012
Successful Departures
12 Month Rolling Average
CFMI PROPRIETARY INFORMATION
Delay and Cancellation Top Causes
(basic engine last 12 months)
Cause Quantity Corrective Action
DAC LPT Blade Program 101 Control action to BSI vibration shifts.
Corrective actions being developed.
HMU:
- HPSOV 48 SB 73-037R2 issued, Allows A/L to R/R sw
- FMV 22 Phase II resolver incorp’d in prod/rwk P07
Fuel delta pressure switch 50 Potted switch improvement S/B 73-042
Boeing proposing 1 flight allowance to DDPG MMEL
PALL offering discount on switch upgrade
Ignition System 29 Ignition hardware shows no anomolies
(not confirmed) Power switching relay planned for Aircraft incorp.
HPTACC Valve 25 Improved LVDT S/B 75-002. TCC thermocouple
deletion 2nd Qtr 01
Oil delta P switch 23 Manufacturing improvements incorporated
EEC 21 PSS modification. Improved ATP in place.
Program improvements being monitored.
N1 Vibration 17 Vibration Maint. Action published - CESM 007
issued
Starter 12 Gear and oil catcher upgrade S/B s issued
N2 Speed Sensor 7 SB 72-259 issued.
CFMI PROPRIETARY INFORMATION
CFM56-7B Revenue Service Status
Entry into service December 1997
Operators/aircraft in service 98/726
Cumulative engine hours/cycles 6,089,214/
3,145,614
Daily utilization hours/cycles 9.5/4.9
Average flight leg 1.93
High time engines: hours/cycles 12,500 / 8,333
Total SVR (per 1,000 EFH) .024
Total IFSD rate (per 1,000 EFH) .003
Dispatch reliability 99.94
Data as of January 2001
Meeting or Exceeding Reliability Goals