Maintenance Caused IFSD

航空

游客，如果您要查看本帖隐藏内容请回复

航空

Maintenance Caused IFSD
Presented by
Bill Benham
Feb. 2x, 2006
CFM International Proprietary Information: The information in this document is CFM Proprietary Information and is disclosed in confidence. It is the property of CFM
International and its parent companies, General Electric Company and Snecma Moteurs, and shall not be used, disclosed to others or reproduced without the express
written consent of CFM. If consent is given for reproduction in whole or in part, this notice shall appear in any such reproduction in whole or in part. The information
contained in this document may also be controlled by the U.S. and French export control laws. Unauthorized export or re-export is prohibited.
Review of Maintenance Related IFSD
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
ALL CFM56-7 IFSD Causes Since EIS
0
5
10
15
20
25
30
Number of IFSD
Maintenance
# 4 Bearing
AGB
HMU
#3 Bearing
Starter
HPT Blade
A/C Systems
TEO Sensor
Aft Sump Leak
EEC
FOD
Lightning Strike
Altenator
Oil Filter Bypass
Fuel Imbalance
PS3 Line
RDS
TGB
#3 A/O Seal
F/O Hx
Spinning FF
Damaged Fuel Line
MFP
#2 Bearing
Oil Line No 1 Brg
Oil Temp Indication
PMA gasket
T25 Sensor
VSV Act
Cause
1998-2004 2005
 SEE NEXT SLIDE
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
CFM56-7 Maintenance Caused IFSD Since EIS
0
1
2
3
4
5
6
Oil Leaks
Hand Cranking
Pad Cover
Fuel Leaks
Spinning Fuel
Filter
MCD
Installation
No BSI After
Hot Start
Loose CTAI
Valve
Damage to
VSV ring
OFB - Prev
Starter Failure
Oil Not
Serviced
Improper T/S
1998-2004 2005
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
Top CFM56-7 Maintenance IFSD Drivers
• Oil Leaks (6)
– Four Under Torqued Connections
– Two Following IDG Replacement
• Hand Cranking Pad Cover (5)
– Loose or Not Installed HCP Cover Following BSI
• Fuel Leaks (4)
– Two Gasket Damage
– On Over Torque
– One Under Torque
• Spinning Fuel Filter (4)
– All Had Pre CFM56-7 SB 73-0078 Filters Installed
• MCD Installation (3)
– One DMS
– Two MCD
– One MCD Under Investigation
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
CFM Fleet Highlites Article (FHA)
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
December 2001 Fleet Highlites Article
CFM56-7B -- EEC Alternate Mode Light Versus Engine Control Light (01-12-7321-04)
CFM has received event reports suggesting that there may be some confusion over the
difference between the cockpit ENGINE CONTROL light and the EEC Alternate Mode (EECALTN)
light. This article is intended to clarify the distinction between these two lights, both in
terms of dispatch ramifications and the conditions under which these lights can illuminate. It
is hoped that a better understanding of these distinctions will improve the troubleshooting,
and reporting, of events related to the illumination of these lights.
The figure below describes the dispatch limitations of the ENGINE CONTROL light and the
EEC-ALTN light. Both lights are located in the flight compartment on the P5 Aft Overhead
Panel.
When ENGINE CONTROL light 1 or 2 is illuminated, the airplane is in a no-dispatch
configuration and there is no MMEL relief for this condition. The ENGINE CONTROL light
can be illuminated only when the airplane is on the ground.
When EEC-ALTN light 1 or 2 is illuminated, both EECs must be placed into the alternate
mode. Refer to the page 2-73-11.0 of the 737 Dispatch Deviations Procedures Guide
(DDPG), dated June 1, 2001 for relief from the EEC-ALTN light. The EEC-ALTN light can be
illuminated when the airplane is in flight or on the ground.
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
December 2001 Fleet Highlites Article - Figure
Next-Generation 737 P5 Aft Overhead Panel
Engine-Control Light
(Engine 1)
Engine Control Light
(Engine 2)
EEC-ALTN Light
(Engine 2)
EEC-ALTN Light
(Engine 1)
When either engine-control
light is illuminated the airplane
is in a no-dispatch condition.
(No MMEL relief)
Anytime either EEC-ALTN light is
illuminated, both EECs must be
placed into alternate mode.
(MMEL relief 2-73-11.0 - 01-JUN-01)
ENGINE
CONTROL
ENGINE
CONTROL
ON ON
ALTN ALTN
REVERSER REVERSER
1
2 ENGINE
REVERSER
ENGINE
CONTROL
1
ENGINE
EEC
REVERSER
ENGINE
CONTROL
2
ALTN
ON
ALTN
ON
(FRONT VIEW)
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
Dispatch Deviations Procedures Guide – Section 2
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
Received January 30, 2006
DESCRIPTION:
The datum airplane, on flight XYZ from Point-A performed a Return To
Ramp (RTR) on 20 January 2006 due to the # 2 engine control light
illuminated. Maintenance message 75-30832, T3 out of range. The
airplane was on the runway center line at the time of the fault.
Troubleshooting was carried out in accordance with ref /B/. The T3 sensor
plug was cleaned and reset. The fault remained intermittent. The airplane
was released for further service per MEL. Final corrective action was
replacement of the ref /A/ T3 sensor. Subsequent workshop testing of ref
/A/ has revealed no fault with the sensor. The airplane continues to operate
without further fault.
There Is No MEL Relief For The Engine Control Light
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
FIM/AMM
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
Example Over Temp During Start (AMM 71-00-00)
Possible Change:
(c) If Steps 3 (a) and 3(b) have been completed without negative findings then A maximum…
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page
Maintenance Communication Process
• Leverage Best Practices From the CF34 Program
• Use The Web Based Critical Issue Tool
– The initial trial will be presented to AAL, COA, DAL, SWA
– Contents:
• IFSD Chart (EIS)
• Maintenance IFSD Chart
• One Page Reminder of Critical Maintenance Practice
– Re-publishing of an old FHA
– Reminder to install HCP following a BSI
– Pictures or Diagrams
• Details of the Process are Still Being Worked
– This will not be a one-time event, but an on going process
• Will be Worked Through the ATPM and FSE for Each Airline
• Be Available to All CFM FSE (INC zone) in March 2006
CFM PROPRIETARY INFORMATION – Subject the Restrictions on the Cover or First Page

junbok

谢谢楼组！

kinran

bocome

Maintenance Caused IFSD

yafeng5921

感谢楼主分享

wsinglejoke

666666666666666666666

titanium

好东西，看看