ground based software (gbs) citation mustang fadec= full authority digital engine control •...
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This guide is designed to assist maintenance and avionics technicians in using the Pratt & Whitney Ground Based Software or GBS to troubleshoot the PW615F-A engine used on
the Cessna Citation Mustang.
The GBS system is sometimes referred to as DPHM which stands for Diagnostics, Prognostics and Health Management. In this document it will be referred to as GBS.
For further information concerning the purchase or subscription of the GBS equipment see the latest revision of P&WC Service Information Letter S.I.L. PW600-002.
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Caution
This document is supplemental information only, and not technical approved data. It does not replace the Cessna Citation Mustang Maintenance Manual or the Pratt & Whitney Canada PW615F-A Line Maintenance Manual.
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Abbreviations
• CDMS= Citation Diagnostics Maintenance System (onboard diagnostics) • DPHM= Diagnostics, Prognostics and Health Management • EEC= Electronic Engine Control • FADEC= Full Authority Digital Engine Control • GBS= Ground Based Software • TLA= Throttle Lever Angle
GBS kit P/N 3072685 consists of the following:
1) PWC69317 Download Cable Assembly 2) PWC90191 RS232-USB Adapter and Cable 3) CD containing the drivers for the RS232-USB adapter 4) CD containing the following software:
a. GBS Transfer Module b. GBS Diagnostic Module (GBSLite) c. Interactive Engine Technical Manual (IETM)
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Make sure that the maintenance switch is in the true position before connecting to the aircraft.
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Connect the cable- pull the carpet up at the back of the drop aisle in the aft cabin.
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Connect the cable to the laptop computer through the serial port. If the computer does not have a serial port, then use the adapter to connect to the USB port. The driver from the CD must be installed before using the adapter.
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Choose Function
EEC Analysis
Trim / Upload
Real-Time Display
Download Data
Sending Data
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Use this screen to review data as needed. Select the Close button to return to the Express Screen.
It is permissible to adjust the values in the white box as necessary for an EEC change.
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Notes on using the Trim / Upload Screen
• Obtain the N1 trim from the respective engine data plate. • Obtain the ITT trim from the respective engine data plate. • Obtain the engine serial number from the respective engine
data plate. Only enter the last 4 numbers. • Use the TLA trim to rig the throttles by using an offset.
Maximum is 5 degrees. • Please see TLA Rigging document for specifics.
Make certain that the serial number is transferred to the upper right window. Click OK.
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You should see it writing data. If you receive an error, power the aircraft down for 15 econds and try again. s
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t will write the data to the hard drive. Then this screen will appear, and data may be I
reviewed. REFERENCE ONLY
Select the Close button to return to the Express Screen. Repeat for the remaining engine.
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Notes on Sending Data
• Send all data to:
Tony Hershberger Team Mustang Cessna tmhersh
Aircraft Company [email protected]
• If the computer used to download the faults does not have
e-mail capability, then go to the section on
Alternative Method
his will attach the GDC file directly to an e-mail. Type T
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his will attach the GEC file directly to an e-mail. Type T
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ending Fault DownloadsS
• After the downloads are complete, close the GBSLite program. • Access the hard drive on the laptop and go to this address:
C:\GBS-PWC\Bin\gbstm\dcu\PW615F\DCU_DATA
• The file will have an extension of .gDc and will have an arrow in front of it.
ote: Your computer might have a different letter assigned to it. Modify as necessary. A omplete file will be approximately 152 KB in size.
Sending Real Time Disp
Nc
lay Recordings • After the recordings are taken, close the GBSLite program. • Access the hard driv
C:\GBS-PW • The file will have an extension of .gEc
Note: Your computer might have a different letter assigned to it. Modify as necessary. A complete file will be of varying size dependent on the length of the recording. Take these files and place on a flash drive to send through e-mail on another computer.
e on the laptop and go to this address: C\Bin\gbstm\eec\pw615F\eec_data