CFM56-7 Scorecard Data through April 2002

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航空

CFMI PROPRIETARY INFORMATION
Data through April 2002
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: 12,662,532
Cycles: 6,589,450
Engines: 2,333
Aircraft 1,096
Issue Status
• Oil/Fuel Delta P Switch
• Fan Disk
• Platform Aft Pin
• N1 Vibration - Flight Line
• EEC
• HPT Blades
• HMU - FMV
• MSV position faults
• EEC Ram Corruption
• VBV Guide Pad Delamination
CFM56-7 Scorecard
Total IFSD Rate
Goal 0.003
Current 0.003
Total ATO Rate
Goal 0.020
Current 0.029
Total SV Rate
Goal 0.100
Current 0.026
Total UER rate
Goal 0.040
Current 0.014
Leading Indicators
Booster Abradable
Vane Corrosion
LPT2 Nozzle Cracking
AGB axial link (spherical bearing)
Y
Y
Y
Y
R
G
G
Y
Y
Y
CFMI PROPRIETARY INFORMATION
Data through April 2002
• 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 (3)
• Delta (68)
• Easyjet (10)
• Excel (7)
• El Al (5)
• Euralair (6)
• Futura (7)
• Germania (10)
• GOL Transportes (14)
• 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
CFMI PROPRIETARY INFORMATION
Data through April 2002
Age Distribution - Hours
0
50
100
150
200
250
300
0
50
100
150
200
250
300
Number of Engines
ETSN Distribution
CFMI PROPRIETARY INFORMATION
Data through April 2002
Age Distribution - Cycles
0
50
100
150
200
250
300
350
0
50
100
150
200
250
300
350
Number of Engines
ECSN Distribution
CFMI PROPRIETARY INFORMATION
Data through April 2002
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
CFMI PROPRIETARY INFORMATION
IFSD Causes - Total Last 12 MonDtahtasthrough April 2002
Cause Quantity Corrective Action
Oil Temperature Sensor 3 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 Root cause not found; Closed
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 - EEC RA
Corruption - S/W version 7.B.O to introduce accommodation
Control Alternator 1 Control alternator cover crack - oil loss (Could not be duplicated in
lab testing - 1 occurrence in 13,000 alternators.
AGB Hand Cranking Brg 1 Under investigation, awaiting findings
Data for total rate:
Lightening strike 1 Engine stalled due to lightening induced airflow disruption
Pilot cut fuel to engine.
FOD - Bird Strike 1 No Active Program
DMS Detector 1 DMS detector not completely engaged: Spool valve o-ring
damaged
Maintenance 1 Hand cranking pad not installed - Oil loss
CFMI PROPRIETARY INFORMATION
Data through April 2002
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
ATOper 1000 departures.
Basic 12 mo Rolling
Total 12 mo Rolling
CFMI PROPRIETARY INFORMATION
Data through April 2002
Aborted Takeoff Causes - Last 12 months
Cause Quantity Corrective Action
Data for basic rate:
MSV position fault 8 Dual current software approach S/W 7.B.N July 02
Eng Control light (-2) 3 Fleet highlights published, maintenance hand book
(No faults recorded) developed to aid mtc with FMC-CDU interrogation
TBV Position fault 3 EHSV design improvements incorp’d 4th Qtr 02; S/W
Accommodation being considered
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 Corrective action for 11 out of 12 failure modes defined
Rotor winding improvements 4th Qtr 02
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
Fan Blade Platform 1 Fan blade platform pin torque check SB to issue July 2002;
Repetitive re-torque under-consideration
Data for total rate:
Bird strike (1) 4 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 (1) 4 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
CFMI PROPRIETARY INFORMATION
Data through April 2002
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
CFMI PROPRIETARY INFORMATION
Data through April 2002
Shop Visit Top Causes - Total engine Last 12 months
Cause Quantity Corrective Action
LPT Blade 46 DAC unique. Control actions in place. New blade 3rd 02
Proactive No 4 brg removal 8 Bearings from suspect lot of 47
Maintenance 6 N/A
FOD/Other 7 N/A
HPT Blade
Blade Evaluation 5 Sampling program to evaluate HPT blade shank cracks
Trailing edge cracks (2) 7 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 (1) 3 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 3 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 EEC software improvements 3 Qtr 02 (7.B.N). Exploring mechanical
fastening since failure in non-suspect population occurred
AGB hand cranking pad (1) 4 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) 4 Fan blade platform pin torque check SB to issue July 2002; Repetitive
re-torque under-consideration
CFMI PROPRIETARY INFORMATION
Data through April 2002
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
CFMI PROPRIETARY INFORMATION
Data through April 2002
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
CFMI PROPRIETARY INFORMATION
Delay and Cancellation Top CauseDasta through April 2002
(basic engine last 12 months)
Cause Quantity Corrective Action
HMU: 1st QTR MTBUR up to 14,000 hours
- HPSOV 67 Field program underway - No switch faults
- FMV 42 Corrective action for 11 out of 12 failure modes defined
Rotor winding improvements 4th Qtr 02
- TBV 27 EHSV design improvements incorp’d 4th Qtr 02; S/W
Accommodation being considered
- MSV 12 Dual current software approach (3Q’02)
Ignition System 43 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
Starter 37 P09 introduction July 02 - Carbon Seal (in-service leakage
allowance in work); P10 - turbine stack improvements Sept 02
EEC 29 PSS modification SB 73-065. Improved ATP in place.
Program improvements being monitored
Fuel delta pressure switch 27 Potted switch improvement S/B 73-042
1 flight allowance added to DDPG MMEL
PALL offering discount on switch upgrade
Software accommodation under consideration
Oil delta P switch 22 Under Investigation
N1 Vibration 16 Vibration Maint. Action published - CESM 007
issued
Engine Control light 14 Fleet highlights published, maintenance hand book developed
(No fault code) to aid mtc with 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
CFMI PROPRIETARY INFORMATION
Data through April 2002
CFM56-7B Revenue Service Status
Entry into service December 1997
Operators/aircraft in service 115/1096
Cumulative engine hours/cycles 12,662,532/
6,589,450
Daily utilization hours/cycles 9.5/4.9
Average flight leg 1.88
High time and cycle engines: hours/cycles 17,687 / 11,020
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 Scorecard Data through April 2002

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CFM56-7 Scorecard Data through April 2002