Service Letters
Air Tractor AT-802 & AT802A, 10000A
Rev: A
06/03/2026
DeHavilland DHC-2, DHC-3, DHC-6 Pilatus PC-6 Textron Aviation 208, 208B Air Tractor AT-802, AT-802A, 6000A, 6100A, 8000A, 8750A, 10000A, 13000A
Rev: A
02/11/2026
Air Tractor AT-802A, AT-802, 10000A
10213A and later
Rev: B
06/01/2026
Air Tractor AT-802A, AT-802, Textron Aviation 208, Pilatus PC-6/B2-H4, DeHavilland DHC-2, DHC-3, DHC-6, 6000A, 6100A, 8000A, 10000A, 13000A
Rev: A
04/15/2026
DeHavilland DHC-6-200 & DHC-6-300, 13000A, 13000S
Rev: A
03/13/2026
Textron Aviation 180, 182, 185, 206 Maule M-7-260, M-7-260C, MT-7-260, M-7-235, M-7-235B, M-7-235C, MT-7-235, M-6-235, M-7-420A, M-7-420AC, MX-7-235, MT-7-420, 3000A, 3000S, 3450A, 3450S
3000 Floats: S/N 30312 and prior and 3450 Floats: S/N 34324 and prior
Rev: A
03/13/2026
Air Tractor AT-802 and AT-802A, 10000A
Rev: C
07/27/2026
DeHavilland DHC-6, 13000S, 13000A
Rev: A
01/26/2026
AT-802, AT-802A, 10000A
S/N 10001A - 10314A, 10333A - 10342A: Spherical bearing pivot block, 3-piece nose fork, fixed centering spring, S/N 10315A - 10332A, 10343A - 10408A: Tapered bearing pivot block, 3-piece nose fork, fixed centering spring, S/N 10409A and later: Tapered bearing pivot block, single-piece nose fork, adjustable centering spring
Rev: E
04/27/2026
Cessna 180, 182, 185, 206, M-6-235, M-7-260, M-7-260C, MT-7-260, M-7-235, M-7-235B, M-7-235C, MT-7-235, M-7-420A, M-7-420AC, MX-7-235, MT-7-420, 3000A, 3450A
N/A
Rev: B
01/15/2026
2100, 2350
See Effectivity Table
Rev: A
05/19/2025
Air Tractor AT-802A & AT-802, 10000A
N/A
Rev: B
04/29/2025
