PRATT & WHITNEY CANADA NUMERICAL INDEX OF SERVICE INFORMATION LETTERS(40)

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PT6B-020  - J. Stothers/ M. Di Giovanni  Apr 15/2003  P3 Filter Cover -Maintenance Precautions  All PT6B-37A Engines 
PT6B-021  1  J. Stothers/ M. DiGiovanni  Nov 13/2003  Review of Critical Part Life Limits -Compressor Rear Hub P/N 3018111  All PT6B-36 Engines 
PT6B-022  - P. DiRico/ J. Stothers  Aug 22/2003  Fee Applicable to TBO Extension Recommendation  All PT6B Engines 
PT6B-023  - J. Stothers  Sep 14/2004  Engine Control Stability  PT6B-37A Engines 

PRATT & WHITNEY CANADA
NUMERICAL INDEX OF SERVICE INFORMATION LETTERS
S.I.L. No.  Rev. No.  Originator  Date Issued  Expiry Date  Subject  Engine Model Applicability 
PT6B-024  - J. Stothers L.M. Trottier  Mar 28/2005  PT6B-37A Engine Ground Base Software Transfer Module (GBStm) Upgrade  PT6B-37A Engines 
PT6B-025 EXPIRED  - K. Blackie  May 20/2005  May 20/2006  Interactive Electronic Technical Manuals (IETM) on CD-ROM  PT6B-36 and PT6B-37A Engines 
PT6B-027  3  P. Duhamel  Jul 13/2010  Diagnostics, Prognostics and Health Management (DPHM) Service -CANCELLED  PT6B-37A Engines 
PT6B-028  - R. Pobjoy  Aug 22/2008  Time Between Overhaul (TBO) Increase to 4000 Hours  PT6B-36A, PT6B-36B Engines 
PT6B-029  - J. Stothers  Jan 25/2010  Rotor (Nr) Droop Caused by FCU Contamination from Compressor Wash Fliud  PT6B-37A Engines 
PT6B-030  - J. Stothers A. Boutet  Apr 28/2010  Inspection for Screw Torque on Fuel Control Unit (FCU) Pr Regulator  PT6B-37A Engines 
PT6B-031  - J. Stothers A. Boutet  Sep 15/2010  PT6B-37A Power Assurance Margin Tracking  PT6B-37A Engines 

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PT6B SIL’s
PRATT & WHITNEY CANADA
NUMERICAL INDEX OF SERVICE INFORMATION LETTERS
SECTION 8 -PT6T/ST6T SIL’s
S.I.L. No.  Rev. No.  Originator  Date Issued  Expiry Date  Subject  Engine Model Applicability 
PT6T-001 EXPIRED  1  R. Ortuso  Mar 24/1995  Mar 24/1996  Third Stage Compressor Stator Airfoil Fracture  Pt6T-3B/-3BE PT6T-6B Engines 
PT6T-002  - R. Ortuso  Oct 20/1994  Oct 24/1995  Notice of Correction to  All PT6T-3/-3B/ 
EXPIRED  P&WC Service Bulletin No. 5001 Revision 18 and Service Bulletin 5002 Revision 16  -3BE, PT6T-3D PT6T-6/-6B Engines 
PT6T-003  - R. Ortuso  Mar 15/1995  Mar 15/1996  Exhaust Duct -No. 3  All PT6T-3/-3B 
EXPIRED  Bearing Cover Pre SB-5222 and Pre-SB 11005 (Replaces SIL 5044 and 11035)  PT6T-6 ST6T-75/-76 Engines 
PT6T-004  - R. Ortuso  Jun 12/1995  Jun 12/1996  Slow Acceleration Due  All PT6T-3D 
　
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