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01.10.2026
EASA STC for Air Tractor AT-502( ) with 4-blade AV-804
MT-Propeller Entwicklung GmbH received the EASA STC No. 10090953 for the installation of the 4-bladed AVIA Propeller AV-804-1-E-C-F-R(P)/CFR275-446 on the Air Tractor AT-502( )
Models: AT-402, -402A, -402B, AT-502, -502A, -502B, -503A powered by the propeller turbines.
Pratt & Whitney PT6A-( ) for
AT-402: PT6A-15AG, -27, -34, -34AG
AT-402A: PT6A-11AG, -11, -20, -20A, -20B, -21
AT-402B: PT6A-15AG, -27, -34, -34AG
AT-502: PT6A-15AG, -27, -34, -34AG, -34B, -36
AT-502A: PT6A-140AG
AT-502B: PT6A-15AG, -27, -34, -34AG, -34B, -36
AT-503A: PT6A-34, -34AG
The FAA STC is in progress.
The 4-bladed AVIA Propellers on the AT-502 series provide equal or better performance data compared with the Legacy STC 4-blade propeller, increase of Static Thrust up to 430 lbs for PT6A-34AG engine and up to 200 lbs for PT6A-140AG engine compared to the existing Legacy 4-blade propeller STC, RPM reduction from 2200 RPM to 2080 RPM for applicable engines for reduced noise and higher efficiency...
Models: AT-402, -402A, -402B, AT-502, -502A, -502B, -503A powered by the propeller turbines.
Pratt & Whitney PT6A-( ) for
AT-402: PT6A-15AG, -27, -34, -34AG
AT-402A: PT6A-11AG, -11, -20, -20A, -20B, -21
AT-402B: PT6A-15AG, -27, -34, -34AG
AT-502: PT6A-15AG, -27, -34, -34AG, -34B, -36
AT-502A: PT6A-140AG
AT-502B: PT6A-15AG, -27, -34, -34AG, -34B, -36
AT-503A: PT6A-34, -34AG
The FAA STC is in progress.
The 4-bladed AVIA Propellers on the AT-502 series provide equal or better performance data compared with the Legacy STC 4-blade propeller, increase of Static Thrust up to 430 lbs for PT6A-34AG engine and up to 200 lbs for PT6A-140AG engine compared to the existing Legacy 4-blade propeller STC, RPM reduction from 2200 RPM to 2080 RPM for applicable engines for reduced noise and higher efficiency...
