Service Letters
SL# 272
2 AMP CIRCUIT BREAKER REPLACEMENT ON FIRE BOSS
Air Tractor AT-802A & AT-802, 10000A
N/A
Rev: B
4/29/2025
SL# 210
10000A Water Scoop Harness Upgrade
Air Tractor AT-802, AT-802A, 10000A
N/A
Rev: A
4/18/2025
SL# 266
MVP-50T Installs on Fire Boss
Air Tractor AT-802 & AT-802A, 10000A, Landplane
Rev: D
4/11/2025
SL# 262
3000/3450 MAIN GEAR ACTUATOR REPLACEMENT
Textron Aviation 180, 182, 185, 206 Maule 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, 3000A, 3450A With Aluminum Main Gear Only
30315A and later, 34317A and later
Rev: B
10/29/2024
SL# 259
BAGGAGE LOCKER CONVERSION FOR FOAM RETARDANT TANK
Air Tractor AT-802 & AT802A, 10000A
10269A and later
Rev: A
1/11/2024
SL# 264
Beaver 5600 lbs GWI Rear Strut Fitting Shim
DeHavilland DHC-2 MK 1 with 5600 lbs Gross Weight Increase on EDO 4930 Floats Only
Rev: C
12/10/2024
SL# 260
CANOE PADDLE / BRACKET UPDATE
2100A, 2100S, 2350A, 2350S, 3000A, 3000S, 3450A, 3450S, 6100A, 6100S, 8000A, 8000S, 8750A, 8750S
Rev: A
1/18/2024
SL# 261
WIRE TERMINAL BLOCK REPLACEMENT
Textron Aviation 208, 208B, Air Tractor AT-802 & AT-802A, DeHavilland DHC-6, 8750A, 10000A, & 13000A
Rev: C
4/3/2025
SL# 258
AT-802 & AT-802A on 10000A Floats – Fire Boss Ferry Fuel System
Air Tractor AT-802 & AT-802A, 10000A
Rev: A
12/7/2023
SL# 257
13000 Straight Float Keel Wear Strip
DeHavilland DHC-6, 13000S
Rev: B
5/23/2024
SL# 256
208/208B on 8000/8750 Floats – Add Protective Sleeve to Water Rudder Steering Cable Spring
Cessna 208, 208B, 8000, 8750
Rev: A
8/29/2023
SL# 251
Attach Points for 13000S Floats Beaching Gear Installation
13000S, DeHavilland DHC-6
13301S & 13302S and later
Rev: B
5/23/2024
SL# 252
Extended Baggage Sight-Gauge Hole and Reservoir-Fill Access Panel Modification
Cessna 208, Cessna 208B, Extended Baggage, 8750A, 8000A
Rev: B
2/22/2024
SL# 253
Horizontal Stabilizer Spar Cracking At Finlets
10000A, AT-802, AT-802A
Rev: E
3/5/2025
SL# 250
Fill Level Display Crack Prevention and Repair
Air Tractor AT-802 & AT-802A, 10000A
Rev: B
1/19/2023
SL# 236
Cessna 208 & 208B Executive Interior Internal Seat Components Replacement
Cessna 208 & 208B, 8000A, 8000S, 8750A, 8750S, & Landplane
Rev: D
5/4/2023
SL# 232
Executive Interior Internal Seat Components Replacement
DeHavilland DHC-6-200, DHC-6-300, & DHC-6-400, 13000A, 13000S, & Landplane
Rev: D
5/12/2023
SL# 248
Water Deflection Panel (Bulkhead #17) Reinforcement
Air Tractor AT-802, AT-802A, 10000A Floats
10283A & 10284A and prior
Rev: C
10/25/2022
SL# 246
E-Dump System, Water Rudder Retract Cable Interference
10000A, AT-802, AT-802A
Rev: B
4/14/2022
SL# 237
Cessna 185 Hydraulic Pump Replacement on 3730A, 3900A, and 4000A Floats
Cessna 185 Series, 3730A, 3900A, 4000A
Rev: A
9/22/2021
