Float Service Letters

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Floats Service Letter Listing

Select Float Model to View Only Service Letters for that Model:
Select an Aircraft Model to View Only Applicable Service Kits:
 
No. Description A/C or Float Model Rev Date
1 Hydraulic Motor Circuit Breaker 6000A - Beaver MKI, MKIII    04/26/1983 
2 Main Gear Up-Stop Adjustment 6000A - Beaver MKI, MKIII     4/26/1983  
3 Nose Gear Trolley-Roller Interference 6000A - Beaver MKI, MKIII    4/26/1983 
4 Hydraulic System Pressure Relief Valve 3730, C185, C206, 6000A - Beaver MKI, MKIII      
5 Center of Gravity Limits C206 per STC SA18GL    11/29/1983 
6 5A3-399 Bushing Insert in Aft End of Main Gear Slide Tube 6000A - Beaver MKI, MKIII     8/15/1984  
7 Main Gear Oleo Shock Strut 6000A & 8000A Floats    12/26/1984 
8 Link-Nose Gear Truck to Ram 6000A - Beaver MKI, MKIII     11/25/1985 
9 Installation of diode for protection of hyd. pressure switch 3730 - C185, C206, 6000A - Beaver MKI, MKIII     
10 Install placard, “Flammable Liquids Prohibited” 3730, C206, 6000A - Beaver MKI, MKIII     
11 Installation of new electric hyd. pump motor 3730 - C185, C206, 6000A - Beaver MKI, MKIII, 8000A - Caravan    06/09/1987 
12 Water Rudder Repair 8000, 8750, 10000, 7000, 6000, 6100  01/02/2015 
13 Hydraulic pump motor All    08/04/1987 
14 Pump out tube – plastic All    08/13/1987 
15 Hyd. oil contamination in the landing gear hydraulics All    02/19/1988 
16 Pilot and Co-Pilot seat stop relocation Beaver MKI, MKIII    10/19/1988 
17 Installation of “Seat Locked” warning placard Beaver MKI, MKIII  08/60/2006 
18 Wipare STC SA1311GL (8000 lb. gross weight increase) C208 Caravan with 8000 floats    10/26/1988 
19 Proper engagement of the seat locking mechanism Beaver MKI, MKIII    10/27/1988 
20 Inspection of fuselage lateral support beam 8000, Caravan    01/15/1990 
21 Installation of AN hardware 4000's on C206 a/c STC SA1483GL     
22 Install front brace wire fitting C208 Caravan with 8000 floats     
23 Elevator trim circuit breaker, C208 Caravan with 8000A installed C208 Caravan with King autopilot & 8000A floats installed    09/23/1991 
24 Intentionally left blank      
25 Reinforcement of Model 4000 float hull bulkheads C206 or C185 with 4000 floats    05/01/1992 
26 Retract cylinder-main gear-3730 3730A - C185, C206  09/16/2016 
27 Reinforcement of glareshield and V-brace 4000 - C206    07/21/1992 
28 Nose and main gear ram update 4000, 6000, 8000    10/10/1992 
29 Install tinnermans – access covers 4000,6000,8000 floats    03/23/1993 
30 Install 675 SHP PT6A-114A -C208 Cessna 208 Caravan    06/06/1993 
31 Firewall Modification Cessna 208 Caravan    01/26/1994 
32 Install cover – wheel well 4000 Amphibs    03/01/1994 
33 Conversion of Model 6000 to Model 6100 Beaver MKI, MKIII  1/20/2020 
34 Nose gear shimmy info 6000/6100 Amphibs    12/05/1996 
35 Conversion of Model 8000 hull (Cessna 208) to Model 8000 (DHC – 3) hull 8000 floats    01/24/1996 
36 Rear strut – aft attachment – Twin Otter DHC-6 Twin Otter Model 300 with 13000 floats    12/04/1996 
37 Install oil filter for float hydraulic system DHC-6 Twin Otter Model 300 with 13000 floats  OBS  4/15/2019 
38 Revisions or additions to 2100 TSO float 2100 TSO floats    10/13/1997 
39 Conversion of 3730 float to 3800 float Cessna 185, 206    10/23/1997 
40 Install Model 2100 float – PA-18 Piper PA-18 with 2100 floats    11/04/1997 
41 Install nose wheel plunger 2100/2350 floats    07/27/1998 
42 Firewall Modification – Plate Caravan 208/ with 8000 floats    04/26/1999 
43 New Wheel and Brake Assembly 3000, 3450, 6000, 8000, 13000 Amphibious Floats    12/21/2017 
44 Firewall Modification – Fitting Lower Firewall Caravan 208/ with 8000 Floats    03/24/2000 
45 Modification – Main Landing Gear 3450 Floats  OBS  4/15/2019 
46 Modification – Main Landing Gear 3000 Floats  OBS  4/15/2019 
47 Installation of Hinged Access Covers to Float Top Deck 13000 Floats  07/15/2010 
48 Superseded by SL #112 – Addition of Hydraulic Accumulator Wipline 2100, 2350, 3000 and 3450 series amphibious floats  OBS  5/21/2019 
49 Placard-Floatplane Airspeed Limitations PA-18 Floatplane    09/04/2001 
50 Inspection of aircraft skin rivet head interference, on float cross wire pulls. C206    11/06/2000 
51 Modification-Foam filled float Boosters 2100 & 2350 Floats  07/13/2005 
52 Modification – Main Landing Gear 2100 & 2350 Floats    04/25/2002 
53 Installation – Chinese Baggage placards 8000 Floats    06/03/2002 
54 Installation – Shock Strut – Metering Tube 8000 Floats    06/17/2002 
55 Main Landing Gear Shock Strut Replacement 2100A, 2350A Floats    02/18/2003 
56 Main Landing Gear Shock Strut Replacement 3000A, 3450A Floats  OBS  4/15/2019 
57 Axle – Nose Gear Trolley – Replacement 2100A, 2350A, 3000A, 3450A    10/01/2003 
58 208 Seaplane Float Spreader Bars – Heavy Duty 8000 Floats    10/01/2002 
59 Removal of Main Gear Tunnel for Seaplane Floats 13000S Floats  11/4/2019 
60 Installation of Pressure Switch Diode 3730 A Floats    06/16/2003 
61 Main Gear Roller Inspection / Torque Arm Replacement 3000, 3450 A Floats    08/28/2003 
62 Nose Wheel Shimmy WIPLINE 2100/2350 SERIES AMPHIBIOUS FLOATS  OBS  4/15/2019 
63 Addition of vent ball stop AT-802A Fire Boss    04/06/2004 
64 PA-18 Wide Body Cub modification for 2000lb gross weight, landplane and floatplane. PA-18 Wide Body Cub    05/24/2004 
65 #7 Bulkhead 3000 - 3450    02/03/2005 
66 Nose wheel shimmy Wipline 2100, 2350, 3000 and 3450 series amphibious floats    09/09/2004 
67 Model 2100 and 2350 weight revision. Model 2100 and 2350 floats  OBS  4/15/2019 
68 Model 3000 and 3450 weight correction. Model 3000 and 3450 floats  OBS  4/15/2019 
69 Replacement of main gear drag link bearings 2100/2350, 3000/3450  07/20/2005 
70 Installation — NAS bolts – Aux Fin – Stabilizer A/C with 10000 floats:    12/27/2004 
71 AT-802 Inspection for Cracks AT-802 aircraft with Wipaire 10000 Floats  04/06/2006 
72 802 Air Tractor Float Longeron and Float Bracket Repair AT-802 aircraft with Wipaire 10000 Floats  04/06/2006 
73 Aviat A-1 operation at A-1A Gross Weight through Aviat Service Bulletin 13 Aviat Husky A-1 on 2100 floats    03/01/2005 
74 Removal of Horizontal Panel and Trunion on Seaplane Floats for Weight Reduction 13000 floats  11/4/2019 
75 Model 2100 and 2350 weight correction Model 2100 and 2350 floats - OBSOLETE  OBS  06/27/2005 
76 AT-802 Fireboss Finlet Inspection & Repair AT-802 w/ Fireboss conversion    10/05/2005 
77 Updates for the Husky Long Flap Installation Husky A-1B with 110" Flaps and 2100 Floats  01/27/2006 
78 AT-802 Fire Boss brake line lengthening 10000 Amphibious Floats    04/06/2006 
79 AT-802 Fire Boss Gear Position Switch Brackets 10000 Amphibious Floats  6/21/2019 
80 AT-802 Fire Boss Slide Tube Corrosion 10000 Amphibious Floats    04/06/2006 
81 AT-802 Adding Larger Water Rudder Stop on Aft Bulkhead 10000 Amphibious Floats  10/17/2019 
82 AT-802 Fire Boss Forward Upper Brace Supports 10000 Amphibious Floats    05/31/2006 
83 AT-802 Fire Boss Shock Strut T-Seal Change 10000 Amphibious Floats    06/30/2006 
84 Intentionally left blank      
85 Baggage Door Lip and Sealing 2100, 2350, 3000, 3450, 6000, 8000 Floats    06/30/2006 
86 Cessna 206H Drain Hole Grommets All 206 STC Applicable Float Sizes    07/20/2006 
87 Inspection Cover Upgrade All 2100, 2350, 3000, 3450 Amphib and Seaplane Floats    08/30/2006 
88 Cessna 172 Heavier Drag Wire Brace Cessna 172,172XP - 2100, 2350 Floats    09/05/2006 
89 Installation Fuselage Frame Tubing Repair and Installation Revised Kicker Strut Air Tractor AT-802A - 10000 Float  09/25/2008 
90 Installation of Additional Filters for the Scoop Hydraulic Solenoid Valve Air Tractor AT-802A - 10000 Float    01/25/2007 
91 Installation of Modified Main Wheel Seals Air Tractor AT-802A, de Havilland DHC-6- 10000 Float, 1300 Float    01/25/2007 
92 Air Tractor Float Brackett Welding Repair, S/N 217 and Similar Air Tractor AT-802A - 10000 Float  03/31/2007 
92 Air Tractor Float Brackett Welding Repair, S/N 217 and Similar – OBSOLETE Air Tractor AT-802A - 10000 Float  OBS  7/11/2019 
93 AT-802 Asymmetric Scoop Position Indicator Upgrade Air Tractor AT-802A - 10000 Float  9/26/2019 
94 Fire Boss Foam Tank Securing Air Tractor AT-802A - 10000 Float  08/03/2010 
95 Slide Tube End Machining Repair Cessna 208 Caravan - 8000 Amphibious Floats    06/01/2007 
96 Caravan Under-Wing Mounted Hobbs Meter Switch Cessna 208 Caravan    08/14/2007 
97 Nose and Main Gear Actuator Replacement 2100, 2350, 3000, 3450 Amphibious Floats  3/20/2020 
98 Main Gear Ram Inspection and Improvement All Amphibious 6100, 8000, 10000, 13000 Floats  02/01/2012 
99 T-Seal Upgrades for Main Gear Ram and Nose Actuator 6100, 8000, 10000, 13000 Amphib floats  02/24/2012 
100 Retrofit step-struts for a grease hole 3450, 8000, 9000 13000 Amphib. and Seaplane floats  06/25/2008 
101 Wipline 10000 Floats Baggage Floor Repair Wipline 10000 Floats  11/26/2008 
102 Wipaire Gear Advisory System Placard All  11/19/2018 
103 Fire Boss spin-on hydraulic filter revision 10000 Amphibious Fire Boss  04/15/2009 
106 8000 Water Rudder Pivot Shaft and Springs Inspection Single Otter, 8000 Amphibious or Seaplane Floats  05/30/2010 
107 Turbo Beaver AFMS change. 6100 Floats  06/15/2010 
108 Kodiak Top Arm Modification, 7000 Main Gear Quest Kodiak on 7000 Amphibious Floats  10/15/2010 
109 Heavy seas strut package option Quest Kodiak on 7000 Floats  09/09/2010 
110 Forward Strut Attach Bulkhead Fatigue Crack 10000 Amphibious Floats  11/03/2010 
111 8000 Float Water Rudder Lock Enhancement Cessna 208 Caravan 8000 Amphibious or Straight Floats  01/25/2012 
112 Optional Hydraulic Power-Pack Timer Relay Installation 2100, 2350, 3000, and 3450 Amphibian Floats  9/26/2019 
114 Grease seal vent hole addition for main landing gear bearings Amphibious float models 3000A, 3450A, 6000A, and 8000A  02/21/2011 
119 Reposition elevator down spring attachment tab. Quest Kodiak on 7000S or 7000A  03/30/2011 
120 Bushing repair for forward, lower center fuselage bow tie mounting plate 13000  04/12/2011 
121 Fuselage modification, Sta. 228, empennage/tail wheel attach bulkhead fastener replacement to facilitate inspection for AD 99-15-07 compliance Viking DHC-2 MK I Boss Beaver 6100, Ski Plane, Wheel Plane  08/03/2011 
122 Fuselage modification, “Jo-Bolt” installation for 5600 lb GW Beaver Viking DHC-2 Mk. I "Beaver" with Wipaire 5600 lb gwi, 6100, wheel plane and ski plane  08/03/2011 
123 Quest Kodiak modified axle beam bushing. Quest Kodiak 100, Wipline 7000 Floats  08/30/2011 
125 Bow Bulkheads, Lower Flange Reinforcement 8000    09/26/2011 
126 Stern Bulkheads, Lower Flange Reinforcement Fire Boss Air Tractor 802 & 802A with Wipline 10000 Floats  12/07/2011 
127 8000 Nose Gear End Cap Cracks 7000A, 8000A  12/11/2012 
128 Main Landing Gear Gravel Deflector Installation 7000A, 8750A, Quest Kodiak, Cessna Caravan  05/07/2013 
129 Cessna 208 Drain Hole Scuppers C208 on 8000 Amphib and Straight Floats  03/29/2012 
130 Alternate Wheel Bearing Grease for Float Landing Gear All Makes and Models  03/29/2012 
131 Husky Model A-1B/A-1C 2250 Lb Increased Gross Weight Wipline 2100 Floats for Husky A-1B, A-1C-180, A-1C-200  IR  06/29/2012 
132 Large Water Rudder Installation Wipline 6000 and Wipline 6100 floats  06/22/2012 
133 Structural Reinforcement, Exhaust Deflector Installation Quest Kodiak 7000  04/25/2012 
134 Twin Otter/13000 Lower Bow Strut Fitting Life Limit Viking DHC-6 Twin Otter on Wipline 13000 floats  08/27/2012 
135 Large Water Rudder Installation Quest Kodiak 100 on Wipline 7000 Floats  08/01/2012 
136 3000/3450 Nose Box – Finger Tab Installation 3000 Amphibian and 3450 Amphibian  07/08/2013 
137 Installation of Angle Reinforcement on Model 7000 Aft Bulkhead Quest Kodiak 100, Wipline 7000 Floats  11/19/2013 
138 10000 and 13000 Nose Gear End Cap Cracks 10000A and 13000A  10/22/2019 
139 Main Landing Gear (MLG) Threaded Coupler 2100, 2350  03/15/2013 
140 Main Landing Gear (MLG) Threaded Coupler 3000, 3450  03/15/2013 
143 Main Landing Gear Proximity Switch 2100A, 2350A  10/17/2019 
144 Superseded by SL #182 – Drag Strut Attachment, Washer Replacement 10000 Amphibious Floats  OBS  5/21/2019 
145 Drag Strut Attachment, Top Deck Repair 10000A  8/11/2020 
146 13000 Bulkhead #6 Crack Repair 13000  04/03/2015 
147 Quest Kodiak Hydraulic Pump Electrical Wire Routing Correction Quest Kodiak 7000  04/24/2013 
148 3000/3450 Gear Snubber Addition and Actuator Part Modification 3000A, 3450A  09/10/2013 
149 Air Tractor Long Finlet Support Strut AT802A w/ PT6A-67F (1600 HP) AT802 (2-Place)With Wipline 10000 Floats  07/29/2016 
151 Replacement Grove Wheel 2100A, 2350A, 3000A, 3450A  3/18/2019 
152 Main Gear Oleo Cylinder Piston Movement 7000, 8750  04/01/2014 
153 Float Pump Out Tube Inspection All  10/24/2013 
154 Main Gear Oleo and Top Arm Replacement 8750A, 7000A  06/24/2014 
155 Front Strut Fittings Replacement 7000  12/19/2014  
156 Plugged Bulkhead Sealant Removal 7000A, 8750A, 8750S  03/19/2014 
157 10000 Bulkheads 8-12, Lower Flange Reinforcement 10000A  5/21/2019 
158 Superseded by SL #166 – Air Tractor Short Finlet Inspection and Support 10000A  12/30/2014 
159 13000 Scuff Plate Installation 13000  01/16/2015 
160 Anode Installation on Floats 13000S, 13000A, 10000A, 8750A, 8750S, 8000A, 8000S, 7000A, 7000S  4/15/2019 
161 3450 Snubber Mount Repair 3000A, 3450A  06/15/2015 
162 Main Gear Actuator Replacement 7000A, 8750A  08/24/2015  
163 8750 terminal strip corrosion 8750A  10/11/2016 
164 8750 Power Pack O-ring Replacement 8750A  10/26/2015 
165 Air Tractor Airspeed Placards 10000A  04/15/2016  
166 Air Tractor Short Finlet Support Strut Removal 10000A  12/04/2015 
167 10000 Probe Jack End Plug Loosening 10000A  04/27/2016 
168 10000A and 13000A Main Gear Drag Brace Tube Repair 10000A, 13000A  03/22/2017 
169 8750 Pylon Nutplate Corrosion 8750A  9/5/2019 
170 Air Tractor Empennage Cracks AT-802, AT-802A, 10000A Floats  10/24/2016 
171 8750A Main Gear Oil Bath Wheel System Cessna 208, Cessna 208B, 8750A Floats  6/11/2020 
172 8750A Bulkhead 9 Cracking Cessna 208, Cessna 208B, 8750A Floats  11/30/2017 
173 10000 Bulkhead 7, 10, and 12 Stiffener Addition Fire Boss, 10000A  9/18/2018 
174 3000A/3450A Main Landing Gear Shaft Replacement 3000A, 3450A, Cessna 180 (through K model), 185 through E model), A185E, A185F, 182 (P through T model), 206H, T206H, T/U206 (through G model) Maule M6-235, M7-235, M7-260, M7-420, MT7- 235, MT7-260, MT7-420, MX7-235  10/22/2019 
175 10000A Forward Strut Spacer Installation Fire Boss, 10000A  01/05/2017 
176 AT-802A Electric Water Rudder Retract Fire Boss, 10000A  10/26/2018 
177 8750 Pylon Stiffeners Cessna 208, Cessna 208B, 8750A Floats  07/14/2017 
178 8000 Baggage Compartment Tie-Down 8000S, 8000A - de Havilland DHC-3 Otter, Cessna 208 Series  12/5/2019 
179 Fire Boss Water Rudder Pulley Clamp Replacement Fire Boss, 10000A  6/20/2018 
180 8000A Main Gear Assembly Custom Washer Installation Cessna 208, Cessna 208B, 8000A Floats  6/30/2020 
181 7000A Bulkhead 16 Gusset Bracket Replacement 7000A, Quest Kodiak  11/27/2018 
182 Fire Boss Strut Attach Hardware Replacement Fire Boss, 10000A  5/2/2018 
184 8750 Baggage Foam Reduction 8750A, 8750S  6/3/2019 
185 10000 Nutplate Installation Fire Boss, 10000A  10/22/2019 
187 10000 Anchor Channel Installation Fire Boss, 10000A  2/14/2019 
188 208B 9,187 lb Gross Weight Increase 8750  8/22/2019 
189 8750 Amphibious Carry Through Strap Doubler Installation Cessna 208, Cessna 208B, 8750A Floats  7/9/2020 
190 8750 Series Bonded Stiffener Corrosion Cessna 208, Cessna 208B, 8750A Floats, 8750S Floats  3/20/2020 
191 Fire Boss Water Scoop Switch Replacement Fire Boss, 10000A  9/26/2019 
192 8750 Side Skin Step Doubler Corrosion Repair Cessna 208, Cessna 208B, 8750A Floats, 8750S Floats  3/20/2020 
193 10000 FORWARD ATTACH POINT DOUBLER INSTALLATION Air Tractor AT-802, AT-802A  11/7/2019 
194 10000A Retrofit 13-Gallon Foam Tank Installation 10000A, AT-802, AT-802A  3/20/2020 
195 8750 Mid Tie Down Cleat Installation 8750A, 8750S  3/14/2019 
196 10000 Bilge Pump Replacement Fire Boss, 10000A  10/22/2019 
197 8750 PYLON CRACKING REPAIR Cessna 208, Cessna 208B, 8750A Floats, 8750S Floats  3/25/2020 
198 Gear Advisory (AGAS) Retrofit All amphibious floats  7/9/2020 
199 Main Pylon Attach Point Fuselage Bracket Fire Boss, 10000A  10/22/2019 
200 8750 BRAKE LINE REROUTE Cessna 208, Cessna 208B, 8750A Floats  1/28/2020 
202 8750 Pylon Hydraulic Routing Cessna 208, Cessna 208B, 8750A Floats, 8750S Floats  10/17/2019 
203 6100 Riveted Float Splash Guard DHC-2, 6100A  7/9/2020 
204 8750 Anchor Mount Installation C208, C208B  1/28/2020 
205 10000A Hopper Fill Control System Replacement Air Tractor AT-802, AT-802A  7/9/2020 
206 8750S Forward Spreader Bar Lift Support Replacement Cessna 208, Cessna 208B, 8750S Floats  5/7/2020 
207 10000A Hydraulic Pump Replacement 10000A, AT-802, AT-802A  5/7/2020 
208 13000A Hydraulic Pump Replacement 13000A, DeHavilland DHC-6  5/7/2020 
211 3000/3450 Series Bonded Stiffener Corrosion Cessna 180, 182,185, 206, and Maule M-6-235, M-7-235, -B, -C, M-7-260, -C, M-7-420A, -AC, MT-7- 235, MT-7-260, MX-7-235, 3000 Floats, 3450 Floats  6/30/2020 
212 2100/2350 Series Bonded Stiffener Corrosion Piper PA-12, PA-18, PA-19, American Champion 8GCBC, Aviat Husky A-1, A-1A, A-1B, A-1C-180, A-1C-200, Textron Aviation 170A, 170B, 172 Series, 175 Series, 2100 Floats, 2350 Floats  7/24/2020 
213 Fire Boss Finlet Attach Bolts Reinstall 10000A, AT-802, AT-802A  7/29/2020 
217 Cessna 208B Exhaust Duct & Engine Cowling Repair Cessna 208, Cessna 208B, 8750S Floats  9/23/2020