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Float Service Letters

 
 
No. Description A/C or Float Model Serial numbers
1 Hyd. motor circuit breakers 6000A - Beaver MK I, III 60001-60006,60011,60012
2 Main gear up-stop adjustment 6000A - Beaver MK I, III 60001-60006, 60011-60014
3 Nose gear trolley-roller interconnect 6000A - Beaver MK I, III 60001-60012, 60015,60016
4 Hyd. system pressure relief valve 3730, C185, C206, 6000A - Beaver MK I, III 0-37614, 0-60030
5 Center of gravity limits C206 per STC SA18GL Thru 37614 or inst. prior to 11-29-83
6 5A3-399 bush insert in aft end of main gear slide tube 6000A - Beaver MK I, III 60001-60038
7 Main gear oleo shock strut 6000A - Beaver MK I, III 60001-60044
8 Link-nose gear truck to ram 6000A - Beaver MK I, III 60001-60054
9 Installation of diode for protection of hyd. pressure switch 3730 - C185, C206, 6000A - Beaver MK I, III 37636 & down 60050 & down
10 Install placard, "Flammable Liquids Prohibited" 3730, C206, 6000A - Beaver MK I, III 37636 & down, 60050 & down
11 Installation of new electric hyd. pump motor 3730 - C185, C206, 6000A - Beaver MK I, III, 8000A - Caravan 37652 & down, 60078 & down, 80006 & down
12 Water rudder, rivet shear 8000A - Caravan 80001 - 80006
13 Hydraulic pump motor All All amphib floats with electric hyd. pump mounted in floats or on firewall
14 Pump out tube - plastic All All floats with nylon plastic pump out tubes
15 Hyd. oil contamination in the landing gear hydraulics All All amphibian floats
16 Pilot and Co-Pilot seat stop relocation Beaver MK I, MK III Beaver MK I & MK III with pilot and Co-Pilot seats installed per     STC SA711GL
17 Installation of "Seat Locked" warning placard Beaver MK I, MK III Beaver MK I & MK III with pilot and Co-Pilot seats installed per     STC SA711GL
18 Wipare STC SA1311GL (8000 lb. gross weight increase) C208 Caravan with 8000 floats 2080114 & up
19 Proper engagement of the seat locking mechanism Beaver MK I, MK III Beaver MK I & MK III with pilot and Co-Pilot seats installed per     STC SA711GL
20 Inspection of fuselage lateral support beam 8000, Caravan C208 Caravan with 8000 floats built before 1-1-90
21 Installation of AN hardware 4000's on C206 a/c STC SA1483GL 40003-40026
22 Install front brace wire fitting C208 Caravan with 8000 floats 80001-80026, 80029-80034
23 Elevator trim circuit breaker, C208 Caravan with 8000A installed C208 Caravan with King autopilot & 8000A floats installed
24 Intentionally left blank

25 Reinforcement of Model 4000 float hull bulkheads C206 or C185 with 4000 floats 40001-40016, 40019-40022, 40025-40054, 40057-40060, 40074-75
26 Retract cylinder-main gear-3730 3730A - C185, C206
27 Reinforcement of glareshield and V-brace 4000 - C206 All
28 Nose and main gear ram update 4000, 6000, 8000 40072A & down, 60210A & down, 80048A & down
29 Install tinnermans - access covers 4000,6000,8000 floats All
30 Install 675 SHP PT6A-114A -C208 Cessna 208 Caravan 2080001 & up
31 Firewall Modification Cessna 208 Caravan 2080001 & up
32 Install cover - wheel well 4000 Amphibs All
33 Conversion of Model 6000 to Model 6100 Beaver MK I, MK III All 6000 floats installed on Beaver MK III with 6000 lb G.W.increase
34 Nose gear shimmy info 6000/6100 Amphibs DHC 2  MK I, MK III
35 Conversion of Model 8000 hull (Cessna 208) to Model 8000 (DHC - 3) hull 8000 floats DHC-3  Otter
36 Rear strut - aft attachment - Twin Otter DHC-6 Model 300 with 13000 floats 130001-130022
37 Install oil filter for float hydraulic system Cessna 208 Caravan All
38 Revisions or additions to 2100 TSO float 2100 TSO floats 21001-21030
39 Conversion of 3730 float to 3800 float Cessna 185, 206 N/A
40 Install Model 2100 float - PA-18 Piper PA-18 with 2100 floats N/A
41 Install nose wheel plunger 2100/2350 floats 21001,02,07,08,11-14,17-20,25,26,   31,32,35-52,55-68,71-88           23003,04,09-12
42 Firewall Modification - Plate Caravan 208/ with 8000 floats 20800001 and Up
43 New Wheel and Brake Assembly 3000, 3450, 6000, 8000 Floats N/A
44 Firewall Modification - Fitting Lower Firewall Caravan 208/ with 8000 Floats 20800001 and Up
45 Modification - Main Landing Gear 3450 Floats 34001 - 34032
46 Modification - Main Landing Gear 3000 Floats 30001 - 30046
47 Installation of Hinged Access Covers to Float Top Deck 13000 Floats Optional All 13000 Series Floats
48 Addition of Hydraulic Accumulator Wipline 2100, 2350, 3000 and 3450 series amphibious floats
49 Placard-Floatplane Airspeed Limitations PA-18 Floatplane Float S/N 276 & Down, with 2000 lb Gross Wt Kit 
50 Inspection of aircraft skin rivet head interference, on float cross wire pulls. C206 All model Cessna 206 aircraft on Wipline Model 4000 and 3450     floats.  
51 Modification-Foam filled float Boosters  2100 & 2350 Floats  2100 & 2350 Floats
52 Modification - Main Landing Gear 2100 & 2350 Floats 2100 Floats S/N 21232 &DN 
2350 Floats S/N 21032 &DN
53 Installation - Chinese Baggage placards 8000 Floats 80211A, 80212A, 80213A, 80214A, 80227A, 80228A, 80247A, 80248A
54 Installation - Shock Strut - Metering Tube 8000 Floats  80244 and DN
55 Main Landing Gear Shock Strut Replacement 2100A, 2350A Floats 2100A S/N's 21327A, 21328A, Updated, 21344A  & DN
2350A S/N 23046A &  DN
56 Main Landing Gear Shock Strut Replacement 3000A, 3450A Floats 3000A S/N 30094A & DN
3450A S/N 34084 & DN
57 Axle - Nose Gear Trolley - Replacement 2100A, 2350A, 3000A, 3459A 2100A S/N's:21412 & DN
2100A S/N's:21412 & DN
2100A S/N's:21412 & DN
2100A S/N's:21412 & DN
58 208 Seaplane Float Spreader Bars - Heavy Duty 8000 Floats S/N 80230 & DN
59 Removal of Main Gear Tunnel for Seaplane Floats 13000S Floats  All Seaplane Floats
60 Installation of Pressure Switch Diode 3730 A Floats All
61 Main Gear Roller Inspection / Torque Arm Replacement 3000, 3450 A Floats 30001A to 30082A, 34001A to 34066A, 30001A to 30118A, 34001A to 34128A
62 NOSE WHEEL SHIMMY WIPLINE 2100/2350 SERIES AMPHIBIOUS FLOATS All
63 Addition of vent ball stop AT-802A Fire Boss SN: 154,155,168,169
64 PA-18 Wide Body Cub modification for 2000lb gross weight, landplane and floatplane.
SN's AF18162 & Down - Wide Body Cubs only. Ref. STC SA02187AK
65 #7 Bulkhead 3000 - 3450 All model 3000 S/N 30133 and up.
All model 3450 S/N 34159 and up.
66 Nose wheel shimmy Wipline 2100, 2350, 3000 and 3450 series amphibious floats
67 Model 2100 and 2350 weight revision. Model 2100 and 2350 floats
68 Model 3000 and 3450 weight correction. Model 3000 and 3450 floats
69 Replacement of main gear drag link bearings 2100/2350, 3000/3450 2100A: S/N 21001 thru -----
2350A: S/N 23001 thru -----
3000A: S/N 30001 thru -----
3450A: S/N 34001 thru -----
70 Installation -- NAS bolts - Aux Fin - Stabilizer A/C with 10000 floats: A/C S/N's: 802-0029, 0154, 0155, 0168, 0169, 0173, 0179
71 AT-802 Inspection for Cracks AT-802 aircraft with Wipaire 10000 Floats
72 802 Air Tractor Float Longeron and Float Bracket Repair AT-802 aircraft with Wipaire 10000 Floats
73 Aviat A-1 operation at A-1A Gross Weight through Aviat Service Bulletin 13 2100 floats
74 Removal of Horizontal Panel and Trunion on Seaplane Floats for Weight Reduction 13000 floats
75 Model 2100 and 2350 weight correction Model 2100 and 2350 floats
76 AT-802 Fireboss Finlet Inspection & Repair AT-802 w/ Fireboss conversion all serial numbers
77 Updates for the Husky Long Flap Installation 2100 Floats A/C S/N's: 2285, 2288, 2289, 2291 & Up
78 AT-802 Fire Boss brake line lengthening 10000 Amphibious Floats AT-802 S/N 10001-10052
79 AT-802 Fire Boss Gear Position Switch Brackets 10000 Amphibious Floats All AT-802 aircraft
80 AT-802 Fire Boss Slide Tube Corrosion 10000 Amphibious Floats All AT-802 aircraft
81 AT-802 Adding Larger Water Rudder Stop on Aft Bulkhead 10000 Amphibious Floats AT-802 S/N 10001-10052A
82 AT-802 Fire Boss Forward Upper Brace Supports 10000 Amphibious Floats All AT-802 aircraft
83 AT-802 Fire Boss Shock Strut ‘T’-Seal Change 10000 Amphibious Floats All AT-802 aircraft
84 Intentionally left blank

85 Baggage Door Lip and Sealing 2100, 2350, 3000, 3450, 6000, 8000 Floats All
86 Cessna 206H Drain Hole Grommets
All STC Applicable Float Sizes Cessna 206H
(other models optional only)
87 Inspection Cover Upgrade
All 2100, 2350, 3000, 3450 Amphib and Seaplane Floats
88 Cessna 172 Heavier Drag Wire Brace
Cessna 172,172XP - 2100, 2350 Floats
89 Installation Fuselage Frame Tubing Repair and Installation Revised Kicker Strut
Air Tractor AT-802A - 10000 Float
90 Installation of Additional Filters for the Scoop Hydraulic Solenoid Valve
Air Tractor AT-802A - 10000 Float
91 Installation of Modified Main Wheel Seals
Air Tractor AT-802A, DeHavilland DHC-6- 10000 Float, 1300 Float
92 Air Tractor Float Brackett Welding Repair, S/N 217 and Similar
Air Tractor AT-802A - 10000 Float
93 AiT-802 Asymmetric Scoop Position Indicator Upgrade Air Tractor AT-802A - 10000 Float
94 Fire Boss Foam Tank Securring Air Tractor AT-802A - 10000 Float
95 Slide Tube End Machining Repair Cessna 208 Caravan - 8000 Amphibious Floats 8000 Amphibious Floats - 80323 & 80324
96 Caravan Under-Wing Mounted Hobbs Meter Switch Cessna 208 Caravan Amphibious or Seaplane Floats
97 Nose and Main Gear Actuator Replacement 2100,2350,3000,3450 Amphibious Floats  
99 T-Seal Upgrades for Main Gear Ram and Nose Actuator 6100, 8000, 10000, 13000 Amphib floats  
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1700 Henry Avenue, So. St. Paul, MN 55075
Phone: 651-451-1205    E-mail: websales@wipaire.com