PRATT & WHITNEY CANADA
NUMERICAL INDEX OF SERVICE INFORMATION LETTERS
S.I.L. No. Rev. No. Originator Date Issued Expiry Date Subject Engine Model Applicability
PT6A-180 0 G. Mulas Dec 14/2010 Dec 31/2011 Value Overhaul Program PT6A-11, PT6A-11AG, PT6A-15AG, PT6A-112 Engines
PT6A-181 0 G. Mulas Dec 14/2010 Dec 31/2011 Value Overhaul Program PT6A-21, PT6A-27, PT6A-28, PT6A-34, PT6A-34AG, PT6A-36, PT6A-135, PT6A-114, PT6A-114A Engines
PT6A-182 1 G. Mulas Jan 11/2011 Dec 31/2011 PT6A Hot Section Refresh Kits PT6A-11, PT6A-11AG, PT6A-15AG, PT6A-112, PT6A-121, PT6A-21, PT6A-25A, PT6A-28, PT6A-110, PT6A-25, PT6A-27 Engines
PT6A-183 1 G. Mulas Jan 11/2011 Dec 31/2011 PT6A Hot Section Refresh Kits PT6A-114, PT6A-114A, PT6A-34, PT6A-34AG, PT6A-36 Engines
PT6A-184 0 G. Mulas Mar 15/2011 Fuel Filter Part Number not listed in Illustrated Parts Catalogue (IPC) PT6A-68 Series Engines
PT6A-185 2 G. Mulas Aug 03/2011 Aug 03/2012 2011 PT6A Customer Days All PT6A Engines
PT6A-186 0 G. Mulas Apr 14/2011 Uncommanded on Ground Power Reduction PT6A-42A PT6A-42A Engines
PT6A-188 0 G. Mulas Aug 05/2011 Engine Performance Checking Curves All PT6A Engines
PT6A-14032 1 CANCELLED
PT6A-14034 1 CANCELLED
Page 6-20
PT6A SIL’s
PRATT & WHITNEY CANADA
NUMERICAL INDEX OF SERVICE INFORMATION LETTERS
SECTION 7 -PT6B SIL’s
S.I.L. No. Rev. No. Originator Date Issued Expiry Date Subject Engine Model Applicability
PT6B-001 EXPIRED 1 R. Ortuso Dec 07/1994 Dec 07/1995 Engine Starting (Replaces SIL 11032 R4) All PT6B-36A Engines
PT6B-002 - R. Ortuso Mar 15/1995 Mar 15/1996 Exhaust Duct -No. 3 PT6B-36/-36A
EXPIRED Bearing Pre-SB 5222 Engines
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