Knots 2U LTD
Named as the FAA publishes it on its approvals.
Holds 85 approved modifications, most of them for the Piper PA-28 Cherokee, Warrior, Archer and Arrow. Holds 782 approvals to make replacement parts. FAA spelling: Knots 2U Ltd.
Approved modifications 85 · newest first
Piper PA-28 Cherokee, Warrior, Archer and Arrow 22Piper PA-39 Twin Comanche C/R 18Piper PA-30 Twin Comanche 18Piper PA-32 Cherokee Six, Lance and Saratoga 17Piper PA-24 Comanche 12Cessna 182 Skylane 10Cessna P206 Super Skylane 9Cessna A185 Skywagon 9Cessna 210 Centurion 9Cessna 185 Skywagon 9Cessna 180 Skywagon 9Cessna 172 Skyhawk 9
2021-05-24SA1228CE · Installation of wing tip extension. · PA-28-140, PA-28-150, PA-28-160
2021-05-24SA2490SW · Installation of wing tip extension and dorsal fin. · PA-28R-180, PA-28R-200
2021-05-24SA00076WI · Manufacture and installation of replacement wing tips · PA-32-300, PA-32R-300, PA-32RT-300T
2021-05-24SA1373CE · Install third window. (PA-28-180 S/N 28-1 THRU 28-4377, PA-28-235 S/N 28-10003 THRU 28-11039) · PA-28-235, PA-28-140, PA-28-150
2021-05-24SA1227CE · Installation of dorsal fin. · PA-28R-200, PA-28R-180, PA-28-180
2017-08-11SA10594SC · Modification of the Monroe Automotive Equipment Co. (MAECO) Shimmy Dampener. · PA-24, PA-24-250, PA-24-260
2015-10-09SA5130NM · Fabrication of Model RMD-003536-B auxiliary landing lights · A36, F33A, V35B
2015-10-09SA961NW · Installation of forward facing white lights (100 watt), clear plastic wing tip covers, and associated systems · SA226-AT, SA226-T, SA226-TC
2015-10-09SA4337NM · Installation of landing/recognition lights inside the modified wing tip leading edge · 185, 185A, 185B
2015-10-09SA3685NM · Installation of fiberglass wing tips; each tip having a 100 watt recognition light and a clear plastic lens. · 210-5 (205), 210-5A (205A), 210
2015-10-09SA01786SE · Fabrication and installation of wing tips · PA-28-140, PA-28-150, PA-28-160
2015-10-09SA411NW · Installation of forward facing white lights, position lights, clear plastic covers, and associated systems. · 1121A, 1121B
2015-10-09SA01787SE · Fabrication and installation of wing tips · PA-28-151, PA-28-161, PA-28-181
2015-10-09SA00648SE · Fabrication of R.M.D. Aircraft Lighting, Inc., wing-tip and landing light Kit No. 00190-C. · 185, 185A, 185B
2015-10-09SA665NW · Installation of forward facing white lights (100 watts) clear plastic wing tip tank nose cone, and associated systems · PA-31T, PA-31T1, PA-42
2015-10-09SA00070SE · Fabrication of Model RD-0050 replacement wing-tip position light lens covers. · 36, A36, F33A
2015-10-09SA5903NM · Fabrication of Model RMD-000035-B replacement wing tips with supplemental landing and recognition lights. · 35-33, 35-A33, A35
2015-10-09SA574NW · Installation of forward facing white lights, (100 Watts) and clear plastic wing tip tank nose cone and associated systems · 310G, 310H, 310I
2015-10-09SA01107SE · RMD Aircraft Lighting high intensity discharge wingtip light · 185, 185A, 185B
2010-03-29SA1217GL · Installation of wing root fairings · PA-32-260, PA-32-300, PA-32-301
2010-03-29SA1521GL · Installation of Flap, Aileron, Flap/Fuselage, and Stabilator Gap Seals. · PA-32-301, PA-32-301FT, PA-32-301T
2010-03-29SA2356NM · Installation of Knots 2U, Ltd Landing/Recognition Lights Kit · PA-28-151, PA-28-161, PA-28-181
2010-03-29SA1195GL · Installation of Flap Hinge Fairings seals · PA-32-260, PA-32-300, PA-32-301
2009-03-20SA01834CH (1 OF 2) · Installation of the High Intensity Discharge Light Assembly Kit. · 172, 172A, 172B
2009-03-19SA01834CH (2 OF 2) · Installation of the High Intensity Discharge Light Assembly Kit. · PA-28-150, PA-28-151, PA-28-160
2008-08-19SA2381NM · Installation of Knots 2U, Ltd Wheel and Body Fairings · 172, 172A, 172B
2008-08-14SA1401NW · Installation of fiberglass wing tips with recognition lights. · PA-28-140, PA-28-150, PA-28-160
2008-07-25SA02411CH · Installation of the Aero Vent Cabin Ventilation System. · 172, 172A, 172B
2007-06-25SA02446CH · Installation of the Courtesy Light Kit. · 172, 172A, 172B
2007-03-14SA01834CH · Installation of the High Intensity Discharge Light Assembly Kit. · 172, 172A, 172B
2006-11-20SA957GL · Installation of flap and aileron gap seals. · G35, A35, 35R
2006-11-20SA421GL · Installation of aileron and flap gap seals. · F33, 35-A33, H35
2006-08-10SA02497CH · Installation of the Knots 2U Flight Lite System · 182, 182A, 182B
2004-08-16SA02022CH · Installation of Pneumatic Luggage Door Strut Kit. · PA-28-140, PA-28-150, PA-28-151
2003-07-15SA2382NM · Installation of Aileron and Flap Gap Seals. · 172I, 172S, 172R
2001-11-16SA01571CH · Installation of modified nose cone. · PA-30, PA-39
1999-09-07SA1153SW · Square wing tips with dual navigation lights. · PA-24-260, PA-24, PA-24-250
1999-06-28SA640GL · Installation of Aileron, Flap, and Stabilator Gap Seals. · PA-28-201T, PA-28-181, PA-28-161
1999-01-21SA516GL · Installation of aileron, flap, flap to fuselage, rudder gap seals, wing root fairings, dorsal fin, and engine... · PA-39, PA-30
1999-01-21SA526GL · Installation of aileron, flap, flap to fuselage, and rudder gap seals, wing root fairings, and dorsal fin. · PA-24
1998-08-05SA1012GL · Modify the Piper standard nose and main landing gear wheel fairings. (PA-28-151 ALL S/N'S, PA-28-161 S/N'S UP THRU... · PA-28-160, PA-28-151, PA-28-150
1998-07-08SA00899CH · Installation of pneumatic luggage door strut on those models with an extended luggage door. · S35, K35, 35-C33A
1998-07-08SA00911CH · Installation of rudder fin cap/strobe fairing. · 35-33, 35-C33, 35-A33
1997-12-15SA2648CE · Installation of flap actuated gear warning system. · PA-24-260, PA-24-400, PA-24
1997-08-05SA609GL · Installation of aileron, flap, and stabilator gap seals. · PA-32R-300, PA-32RT-300, PA-32S-300
1997-08-05SA00726CH · Replace lower cabin door sill. · PA-30, PA-39
1997-07-21SA1716GL · Installation of Gear Lobe fairings. · PA-44-180, PA-44-180T
1997-07-21SA1714GL · Installation of Gear Lobe Fairings. · PA-32R-301T, PA-32R-301(HP), PA-32R-301(SP)
1997-07-21SA1571GL · Installation of rudder fin cap fairing, with or without a strobe. · PA-28-180, PA-28-151, PA-28S-160
1997-07-15SA1216GL · Install wing root fairings. · PA-28RT-201, PA-28R-201T, PA-28R-201
1997-07-15SA1713GL · Installation of gear lobe fairings. · PA-28R-201T, PA-28R-200, PA-28R-180
1997-07-15SA1572GL · Installation of rudder fin cap fairing, with or without a strobe. · PA-32-301, PA-32R-301(HP), PA-32-301T
1997-07-15SA603GL · Installation of aileron, flap, and stabilator gap seals. · PA-28-160, PA-28-235, PA-28-140
1997-07-15SA1194GL · Install fairings over flap hinges. · PA-28R-201, PA-28R-180, PA-28-181
1997-07-14SA1238GL · Install wing root fairings. · PA-34-220T (III), PA-34-200T, PA-34-200
1997-07-14SA1715GL · Installation of Gear Lobe fairings. · PA-34-220T (IV), PA-34-220T (III), PA-34-200T
1997-07-14SA1225GL · Install fairings over flap hinges. · PA-34-200, PA-34-220T (IV), PA-34-200T
1997-07-14SA729GL · Installation of Aileron and Flap Gap Seals. · PA-34-200T, PA-34-200, PA-34-220T (IV)
1997-05-07SA928GL · Install molded plastic fairings P/N's LI, LO, or LO-F, LC, RI, RO, or RO-F, RC, enclosing all wing flap hinges. · PA-28-180, PA-28R-201, PA-28-236
1997-05-07SA307CH · Replace existing baggage door hold up bracket with an air strut bracket. PA-24-260 MSN #24-4247, and 24-4300 and up · PA-24-260
The first 60 of 85.
Replacement parts approved 782 parts manufacturer approvals, 782 current · Burlington, WI
A parts manufacturer approval lets a company make a replacement part for someone else's aircraft or engine and sell it as an approved part. This company's approvals are mostly for airframe structure (327), other and general (155), landing gear (134).
Piper PA-28 Cherokee, Warrior, Archer and Arrow 172Piper PA-32 Cherokee Six, Lance and Saratoga 116Cessna 182 Skylane 99Cessna 180 Skywagon 72Cessna 172 Skyhawk 72Piper PA-34 Seneca 52Cessna 150 43Piper PA-24 Comanche 41Cessna U206 Stationair 36Cessna T182 Turbo Skylane 34Cessna R172 Hawk XP 33Beechcraft A36 Bonanza 33
2019-08-07Knob K571-132 · replaces 571-132, 66980-00, 66980-000 · PA-24-260, PA-24-400, PA-28-140
2019-03-05Fairing, Rudder Bottom K0531104 · replaces 0531104 · 172 S/N 28000 thru 46754, 175 S/N 55001 thru 56238
2019-03-05Box Assy, Air Filter Upper K35464-000 · replaces 35464-000, 35464-00 · PA-28-151, PA-28-161
2019-03-05Box Assy, Air Filter Lower K35463-000 · replaces 35463-000, 35463-00 · PA-28-151, PA-28-161
2018-08-07Self Sealing Screw Assy ADS-7551-111 · replaces Modification Part · PA-24, PA-24-250, PA -24-260
2018-07-22Stinger K1212010-19 · replaces 1212010-1-791 · 182L S/N 18258686 thru 18259305, 182M thru S/N...
2018-07-22Fairing Assy, RH Brake K0741641-18 · replaces 0741641-14, 0741641-2, 0741641-10 · 182P S/N 18263476 & Up, 182Q, 182R
2018-07-22Fairing Assy, RH Brake K0741641-18 · replaces 0741641-18 · 182S
2018-07-22Stinger K1212010-19 · replaces 1212010-11-791 · 182P S/N 18261531 & Up, 182Q, 182R
2018-07-22Stinger K1212010-19 · replaces 0712635-1 · 182E, 182F, 182G
2018-07-22Fairing Assy, LH Brake K0741641-19 · replaces 0741641-19 · 182S
2018-07-22Stinger K1212010-19 · replaces 1212010-15 · R182, TR182.
2018-07-22Stinger K1212010-19 · replaces 1212010-5-791 · 182M S/N 18259745 thru 18260055, 182N, 182P...
2018-07-22Stinger K1212010-19 · replaces 1212010-21 · 182T S/N 18282046 thru 18282368. T182T S/N...
2018-07-22Stinger K1212010-19 · replaces 1212010-19 · 182S S/N 18280001 thru 18280944, 182T S/N...
2018-07-22Stinger K1212010-19 · replaces 1212010-15-791 · 182T S/N 18282369 & Up, T182T S/N T18209101 & Up.
2018-07-22Fairing Assy, LH Brake K0741641-19 · replaces 0741641-15, 0741641-1, 0741641-11 · 182P S/N 18263476 & Up, 182Q, 182R
2018-07-18Self Sealing Screw Assy ADS-7551-111 · replaces Modification Part · PA-24, PA-24-250, PA -24-260
2018-06-04Fairing, Elevator Tab Right K445000-2 · replaces 445000-2 · 112B, 112TC, 112TCA
2018-06-04Firing, Elevator Tab Left K445000-1 · replaces 445000-1 · 112B, 112TC, 112TCA
2017-11-12Skin, Nose Cap K0552010-17 · replaces 0552010-17 · Cessna) (172B, 172C, 172D
2017-07-09Seal (Storm Window) Seal (Storm Window) ADS1200-19 ADS1200-19 · replaces Aircraft Door Seals, LLC P/N ADS1200-19... · 35-33, 35-A33, 35-B33
2017-07-09Aft Cargo Door Seal ADS1200-305 (Cargo) · replaces Aircraft Door Seals, LLC P/N ADS1200-305 (Cargo) · PA-32-260, PA-32-300, PA-32-301
2017-07-09Seal (Fwd Entry Door) ETA500-1 · replaces Aircraft Door Seals, LLC P/N ETA500-1 · PA-28-140, PA-28-150, PA- 28-151
2017-07-09Front edge Seal (Front Entry door Between Hinges) ADS1200-11 · replaces Aircraft Door Seals, LLC P/N ADS1200-11 · 35-33, 35-A33, 35-B33
2017-07-09Storm Window Seal ADS1200-302 · replaces Aircraft Door Seals, LLC P/N ADS1200-302 · PA-28-140, PA-28-150, PA-28-151
2017-07-09Seal (Baggage Door) 500-1002 · replaces Aircraft Door Seals, LLC P/N 500-1002 · M20, M20A, M20BM20C
2017-07-09Seal (Aft Baggage Door) ADS1200-402-23 · replaces Aircraft Door Seals, LLC P/N ADS1200-402-23 · 177, 177RG
2017-07-09Seal (Front Entry Door0 ADS1200-401-23 · replaces Aircraft Door Seals, LLC P/N ADS1200-401-23 · 177, 177RG
2017-07-09Center Lower Seal (Aft Utility Door) ADS1200-3-6 · replaces Aircraft Door Seals, LLC P/N ADS1200-3-6 · 36, A36, A36TC
2017-07-09Seal (Storm Window) ADS1200-17 · replaces Aircraft Door Seals, LLC P/N ADS1200-17 · 35-33, 35-A33, 35-B33
2017-07-09Door Seal (Front Entry Door) 500-1001 · replaces Aircraft Door Seals, LLC P/N 500-1001 · M20, M20A, M20BM20C
2017-07-09Fwd Bottom Seal (Aft Utility Door) ADS1200-3-9 · replaces Aircraft Door Seals, LLC P/N ADS1200-3-9 · 36, A36, A36TC
2017-07-09Aft Baggage Seal ADS1200-303-2 (Fwd) · replaces Aircraft Door Seals, LLC P/N ADS1200-303-2 · PA-28-150, PA-28-151, PA- 28-160
2017-07-09Window Seal (Emergency Exit Window) ADS1200-5 · replaces Aircraft Door Seals, LLC P/N ADS1200-5 · 35-33, 35-A33, 35-B33
2017-07-09Seal (Front Entry Door) Seal (Front Entry Door) ADS1200-401 ADS1200-401 · replaces Aircraft Door Seals, LLC P/N ADS1200-401... · 175, 172A, 175A
2017-07-09Aft Edge Seal (Aft Utility Door) ADS1200-3-2 · replaces Aircraft Door Seals, LLC P/N ADS1200-3-2 · 36, A36, A36TC
2017-07-09Seal (Front Entry Door) ADS1200-401 · replaces Aircraft Door Seals, LLC P/N ADS1200-401 · 120, 140, 140A
2017-07-09Front Door Seal ADS1200-301-23 · replaces Aircraft Door Seals, LLC P/N ADS1200-301-23 · PA-28-140, PA-28-150, PA- 28-151
2017-07-09Aft Baggage Seal ETA500-3 · replaces Aircraft Door Seals, LLC P/N ETA500-3 · PA-28-150, PA-28-151, PA- 28-160
2017-07-09Seal ETA500-3 · replaces Aircraft Door Seals, LLC P/N ETA500-3 · PA-32-260, PA-32-300, PA-32-301
2017-07-09Seal (Main Entry Door Window) 900-900 · replaces Aircraft Doors Seals, LLC P/N 900-900 · 120, 140, 140A
2017-07-09Seal (Aft Baggage Door) ADS 1200-402 · replaces Aircraft Door Seals, LLC P/N 1200-402 · 172C, 172D, 172E
2017-07-09Window Seal (Emergency Exit Window) ADS1200-6 · replaces Aircraft Door Seals, LLC P/N ADS1200-6 · 36, A36, A36TC
2017-07-09Seal (Nose Baggage Door) ADS1200-21 · replaces Aircraft Door Seals, LLC P/N ADS1200-21 · B95A, D95A, E95
2017-07-09Aft Baggage Seal ADS1200-303-1 (Hinge) · replaces Aircraft Door Seals, LLC P/N ADS1200-303-1 (Hinge) · PA-28-150, PA-28-151, PA- 28-160
2017-07-09Seal (Fwd Baggage Compartment Door) 500-700 · replaces Aircraft Door Seals, LLC P/N 500-700 · 207, T207, 207A
2017-07-09Baggage Door Seal (Aft Baggage Door) 500-603 · replaces Aircraft Door Seals, LLC P/N 500-603 · 175, 172A, 175A
2017-07-09Latch Plate Seal (Aft Utility Door) ADS1200-3-5 · replaces Aircraft Door Seals, LLC P/N ADS1200-3-5 · 36, A36, A36TC
2017-07-09Hinge Seal ADS1200-57 (Hinge) · replaces Aircraft Door Seals, LLC P/N ADS1200-57 (Hinge) · PA-32-260, PA-32-300, PA-32-301
2017-07-09Front Door Seal ADS1200-301-1 · replaces Aircraft Door Seals, LLC P/N ADS1200-301-1 · PA-28-140, PA-28-150, PA- 28-160
2017-07-09Seal (Vent Window) VWS-101 · replaces Aircraft Door Seals, LLC P/N VWS-101 · M20, M20A, M20B
2017-07-09Aft Baggage Seal ADS1200-303-3 · replaces Aircraft Door Seals, LLC P/N ADS1200-303-3 · PA-28-150, PA-28-151, PA- 28-160
2017-07-09Top Aft Seal (Aft Utility Door) ADS1200-3-1 · replaces ADS1200-3-1 · 36, A36, A36TC
2017-07-09Seal (Aft Entry and Cargo Door) 500-602 · replaces Aircraft Door Seals, LLC P/N 500-602 · 205, 206, P206
2017-07-09Door Seal (Front Entry Door) ADS1200-201 · replaces Aircraft Door Seals, LLC P/N ADS1200-201 · M20, M20A, M20BM20C
2017-07-09Seal (Cabin Baggage Door) ADS1200-9 · replaces Aircraft Door Seals, LLC P/N ADS1200-9 · 35-33, 35-A33, 35-B33
2017-07-09Fwd Top Seal (Aft Utility Door) ADS1200-3-7 · replaces Aircraft Door Seals, LLC P/N ADS1200-3-7 · 36, A36, A36TC
2017-07-09Aft Entry Door Seal ADS1200-304 (Entry) · replaces Aircraft Door Seals, LLC P/N ADS1200-304 (Entry) · PA-32-260, PA-32-300, PA-32-301
2017-07-09Main Seal, (Front Entry Door ADS1200-7 · replaces Aircraft Door Seals, LLC P/N ADS1200-7 · 35-33, 35-A33, 35-B33
2017-07-09Seal (Aft Entry Cargo Door) 500-602-3 · replaces Aircraft Door Seals, LLC P/N 500-602-3 · 205, 206, P206
2017-07-09Aft Baggage Seal ADS1200-303-4 · replaces Aircraft Door Seals, LLC P/N ADS1200-303-4 · PA-28-150, PA-28-151, PA- 28-160
2017-07-09Front Door Hinge Seal Block (Front Entry Door) ADS1200-15 · replaces Aircraft Door Seals, LLC P/N ADS1200-15 · 35-33, 35-A33, 35-B33
2017-07-09Aft Bottom Seal (Aft Utility Door) ADS1200-3-3 · replaces Aircraft Door Seals, LLC P/N ADS1200-3-3 · 36, A36, A36TC
2017-07-09Center Upper Seal (Aft Utility Door) ADS1200-3-4 · replaces Aircraft Door Seals, LLC P/N ADS1200-3-4 · 36, A36, A36TC
2017-07-09Fwd Edge Seal (Aft Utility Door) ADS1200-3-8 · replaces Aircraft Doors Seals, LLC P/N ADS1200-3-8 · 36, A36, A36TC
2017-07-09Seal (Front Entry Door) Seal (Front Entry Door) 500-600 500-600 · replaces Aircraft Door Seals, LLC P/N 500-600 Aircraft... · 120, 140, 140A
2016-08-09Stabilator Tip STM28321R · replaces STM28321R · PA-28-140, PA-28-150, PA-28-151
2016-08-09Stabilator Tip STM28321L · replaces STM28321L · PA-28-140, PA-28-150, PA-28-151
2015-12-03Vortex Generator D3-2R · replaces D3-2R · PA-28-140, PA-28-150, PA-28-151
2015-12-03Vortex Generator D3-2L · replaces D3-2L · PA-28-140, PA-28-150, PA-28-151
2015-12-03Vortex Generator D3-1 · replaces D3-1 · PA-28-140, PA-28-150, PA-28-151
2015-12-02Fiberglass Wing Tips 11051-1 · replaces 11051-1 · PA-28-140, PA-28-150, PA-28-160
2015-12-02Wing Tips 11052-1 · replaces 11052-1 · B50, C50, D50
2015-12-02Fiberglass Wing Tips 11050-1 · replaces 11050-1 · PA-24, PA-24-250, PA-24-260
2015-12-02Wing Tips 11004 · replaces 11004 · formerly Cessna Aircraft Company) (150, 150A, 150B
2015-10-08Tip - Rudder 33448-000K · replaces 33448-000 · PA-23-250 S/N 27-7305135 & Up
2015-10-08Fin Tip GF44300-3 · replaces 44300-3 · 112 S/N 126 thru 499, 112B S/N 500 & Up, 112TC...
2015-10-08Tip - Rudder 33448-000K · replaces 33448-00 · PA-23-250 S/N 27-7305135 & Up
2015-10-08Tip, Rudder GF44233-11 · replaces 44233-11 · 112 S/N 126 thru 499, 112B S/N 500 & Up, 112TC...
The first 80 of 782. All part makers.
Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.