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-013 4 G. Mulas Mar 09/2005 Recommended Minimum Service Bulletin List PT6A-67D Engines
PT6A-014 EXPIRED - H. Pepin-Plante Aug 08/1995 Aug 08/1996 Compressor Turbine Vane Ring (Replaces SIL Gen-20118) PT6A-60 Series Engines
PT6A-015 - V. Mastrocola Nov 20/1995 Special Instruction 45-91 Replacement of External Scavenge Pump Drive Shaft PT6A-114/ -114A Engines
PT6A-016 EXPIRED - R. Day Dec 05/1995 Dec 05/1996 Duplex Fuel Nozzle Fixture Tip Modi.cation PT6A Engines
PT6A-017 EXPIRED - V. Mastrocola Nov 30/1995 Nov 30/1996 Fretting on Primary Fuel Tube at the Center Firewall Section NOTE: DUE TO A DUPLICATION IN ASSIGNING THE SIL NUMBER SIL PT6A-017 REPLACES PT6A-014 OF THE SAME SUBJECT PT6A-64, PT6A-66, PT6A-67/ -67A, PT6A-67AF, PT6A-67B, PT6A-67R, PT6A-67AG, PT6A-67D Engines
PT6A-018 EXPIRED 3 P. Del Grande Dec 12/2000 Dec 12/2001 Recommended Service Bulletin List PT6A-65R, PT6A-65AR Engines
PT6A-019 EXPIRED 3 V. Mastrocola Feb 05/1998 Feb 05/1999 Combustion Chamber Dome Bulging PT6A-15AG, PT6A-25C, PT6A-34AG, PT6A-114A, PT6A-135A Engines
PT6A-020 - V. Mastrocola Feb 23/1996 ″A″ Flange Bolts Orientation PT6A-67D Engines
PT6A-021 EXPIRED 1 V. Mastrocola Apr 17/1996 Apr 17/1997 Quicker than Normal Propeller Rundown Time PT6A-25C Engines
PT6A-022 EXPIRED 1 V. Mastrocla Nov 06/1996 Nov 06/1997 Correct Removal/Installation Procedures of Front P3 Tube Assembly PT6A Engines
PT6A-023 EXPIRED 2 P. Del Grande Dec 12/2000 Dec 12/2001 Recommended Service Bulletin List PT6A-67AF Engines
PT6A-024 EXPIRED - V. Mastrocola May 23/1996 May 23/1997 Modi.cation to the Compressor Turbine Disk Service Life PT6A-67AF Engines
