Models PA-18S and PA-19S, 2 PCSM (Normal Category only), Approved May 9, 1950:
Model PA-18S "125", 2 PCSM (Normal Category only) Approved October 25, 1950:
Model PA-18S "135", 2 PCSM (Normal Category only), Approved May 15, 1952:
Model PA-18AS "125", 2 PCSM (Normal Category only), Approved July 1, 1953:
Model PA-18AS "135", 2 PCSM (Normal Category only), Approved July 1, 1953:
PA-18S "105" (Special), same as PA-18S with the exceptions as listed in NOTE 3.
Flaps extended (with Item 601) 80 mph
Model PA-18 "150", 2 PCLM (Normal and Utility Categories), Approved October 1, 1954; Model PA-18A "150", 2 PCLM (Normal and Utility Categories), Approved October 1, 1954.
Flaps extended 85 mph
Models PA-18S and PA-19S, 2 PCSM (Normal Category only), Approved May 9, 1950:
Model PA-18S "125", 2 PCSM (Normal Category only) Approved October 25, 1950:
Model PA-18S "135", 2 PCSM (Normal Category only), Approved May 15, 1952:
Model PA-18AS "125", 2 PCSM (Normal Category only), Approved July 1, 1953:
Model PA-18AS "135", 2 PCSM (Normal Category only), Approved July 1, 1953:
PA-18S "105" (Special), same as PA-18S with the exceptions as listed in NOTE 3.Flaps extended (with Item 601) 80 mphModel PA-18 "150", 2 PCLM (Normal and Utility Categories), Approved October 1, 1954;
Model PA-18A "150", 2 PCLM (Normal and Utility Categories), Approved October 1, 1954.Flaps extended 85 mph Model PA-18S "150" and PA-18AS "150", 2 PCSM (Normal Category only), Approved
October 1, 1954.
Flaps extended (with Item 601) 80 mph