with revision to September 10, 2009. The manual is 554 pages long.
PA-31 P SERIAL NUMBER INFORMATION The serial numbers of the aircraft covered by this Parts Catalog are as follows: (1) Serial numbers of the 1970 PA-31P Pressurized Navajo Models are 31P-3 to 31P-30 inclusive. (2) Serial numbers of the 1971 PA-31P Pressurized Navajo Models are 31P-31 to 31 P-66 inclusive. (3) Serial numbers of the 1972 PA-31P Pressurized Navajo Models are 31P-67 to 31 P-109 inclusive. (4) Serial numbers of the 1973 PA-31P Pressurized Navajo Models are 31P-7300110 to 31P-7300172 inclusive. (5) Serial numbers of the 1974 PA-31P Pressurized Navajo Models are 31P-7400173 to 31P-7400230 inclusive. (6) Serial numbers of the 1975 PA-31P Pressurized Navajo Models are 31P-7530001 to 31P-7530028 inclusive. (7) Serial numbers of the 1976 PA-31P Pressurized Navajo Models are 31P-7630001 to 31P-7630019 inclusive. (8) Serial numbers of the 1977 PA-31P Pressurized Navajo Models are 31P-7730001 to 31P-7730012 inclusive.