TY - BOOK AU - Pratt & Whitney TI - Service Bulletin : : turboprop engine model PT6A U1 - 629.1343 N2 - V.1 : Introduction ; Chapter 5 Time Limits / Maintenance Checks ; Chapter 28 Fuel ; Chapter 29 Hydraulic Power ; Chapter 25 Equipment / Furnishings ; Chapter 26 Fire Protection ; Chapter 27 Flight Controls ; Chapter 24 Electrical Power ; Chapter 20 Standard practices airframe ; Chapter 21 Environmental Systems ; Chapter 22 Auto Flight ; Chapter 23 Communications ER -