Oil Cooler
234 failure reports named the oil cooler in the last ten years, 806 since 1995, most often on the Boeing 737; the condition most often found was "leaking". 218 FAA approvals let 25 companies make a replacement oil cooler, Lori INC holding the most (34). The reports call it "oil cooler", "oil cooler flap", "oil cooler inlet".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 20 |
| 1996 | 22 |
| 1997 | 49 |
| 1998 | 53 |
| 1999 | 30 |
| 2000 | 11 |
| 2001 | 44 |
| 2002 | 42 |
| 2003 | 56 |
| 2004 | 32 |
| 2005 | 14 |
| 2006 | 24 |
| 2007 | 11 |
| 2008 | 18 |
| 2009 | 20 |
| 2010 | 25 |
| 2011 | 17 |
| 2012 | 23 |
| 2013 | 24 |
| 2014 | 16 |
| 2015 | 21 |
| 2016 | 31 |
| 2017 | 22 |
| 2018 | 18 |
| 2019 | 34 |
| 2020 | 19 |
| 2021 | 39 |
| 2022 | 19 |
| 2023 | 14 |
| 2024 | 18 |
| 2025 | 13 |
| 2026 | 7 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Engine | 189 |
| Electrical power | 42 |
| Heating, ice protection and utility systems | 2 |
| Rotorcraft systems | 1 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
leaking141failed17cracked12faulty10malfunctioned8contaminated7faulted7odor6damaged4inoperative3
Conditions found, as a table
| reports | |
|---|---|
| leaking | 141 |
| failed | 17 |
| cracked | 12 |
| faulty | 10 |
| malfunctioned | 8 |
| contaminated | 7 |
| faulted | 7 |
| odor | 6 |
| damaged | 4 |
| inoperative | 3 |
Engines most often reporting it
Approved replacement parts 218 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a oil cooler and sell it as an approved part for the models named. These are the companies holding such approvals for a oil cooler:
Lori INC 34Honeywell International INC. Honeywell Aerospace 28Honeywell International US LLC 27Aero-Classics Heat Transfer Products INC 22Airforms LLC 21Honeywell International INC. 20Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) 19Stoots Aviation LLC 7Machen INC 5Hartzell Propeller LLC 4Ram Aircraft Limited Partnership 3Turboplus Aircraft Systems INC 2Triumph Thermal Systems INC 2Timken Alcor Aerospace Technologies INC 2Steve'S Aircraft 2Rubbert Aircraft Services 2Parker Hannifin CORP 2Northeast Aero Compressor Corporation 2K-Aero INC 2Honeywell International INC 2Goodrich De-Icing and Specialty Systems 2Goodrich Corporation 2Geneva Aviation 2Cub Crafters INC 2Cascade Aircraft Conversions LLC 2
For these models most: Bell 212 (18), Bell 206 JetRanger and LongRanger (13), Embraer EMB-120 (12), Cessna 172 Skyhawk (9), Piper PA-18 Super Cub (7), Mooney M-20 (6), Fairchild SA227 (6), Dehavilland DHC-6 (6), Cessna U206 Stationair (6), Cessna P206 Super Skylane (6), Bell 412 (6), Sikorsky S-61 (5).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Sterling Helicopter | OIL COOLER TACH RMHA-000029-140 | Modification Part | Bell Textron Canada Limited 407 | 2025-12-22 | current |
| Airforms LLC | Upper Oil Cooler Bare Assy AF1255005-1 | 1250888-1 | Textron Aviation Inc. T207, T207A, T210K | 2025-12-18 | current |
| Airforms LLC | Upper Oil Cooler Bare Assy AF1255005-1 | 1255005-1 | Textron Aviation Inc. TU206A, TU206B, TU206C | 2025-12-18 | current |
| Airforms LLC | LH Rear Oil Cooler Baffle Assy AF14143-001 | 14143-001 | Cirrus Design Corporation SR22 | 2025-11-18 | current |
| Airforms LLC | LH Rear Lower Oil Cooler Baffle Assy AF15489-001 | 15489-001 | Cirrus Design Corporation SR22 | 2025-10-14 | current |
| Airforms LLC | Upper Oil Cooler Baffle Assy AF89738-002 | 89738-002 | Piper Aircraft Inc. PA-46-350P | 2025-09-22 | current |
| Hartzell Propeller LLC | Oil Cooler Preheat Kit OC | Modification Article | Lycoming Division... O-290 | 2025-09-12 | current |
| Hartzell Propeller LLC | Oil Cooler Preheat Kit OC | Modification Article | Continental Motors Inc. A-80 | 2025-09-12 | current |
| Hartzell Propeller LLC | Oil Cooler Preheat Kit OC | Modification Article | Lycoming Engines O-320, IO-320, LIO-320 | 2025-09-12 | current |
| Hartzell Propeller LLC | Oil Cooler Preheat Kit OC | Modification Article | Continental... A-65, A-75, C75 | 2025-09-12 | current |
| Boyd Niagara LLC | Oil Cooler Assembly 20003A | 20003A | Piper Aircraft Inc. PA-18, PA-18S, PA-18 “105” (Special) | 2024-12-30 | current |
| Boyd Niagara LLC | Oil Cooler Assembly 20003A | 20003A | Piper Aircraft Inc. PA-18, PA-18S, PA-18 “105” (Special) | 2024-12-30 | current |
| Airforms LLC | Oil Cooler Plate Assembly AF87403-02 | 87403-02 | Piper Aircraft Inc. PA-28R-201T, PA-28RT-201T | 2024-12-18 | current |
| Airforms LLC | RH Rear Oil Cooler Baffle Assy AF0555271-1 | 0555271-1 | Textron Aviation Inc. R172K, FR172K | 2024-10-29 | current |
| Airforms LLC | Upper Oil Cooler Baffle Assy AF1255036-1 | 1255036-1 | Textron Aviation Inc. TU206F, TU206G, T210L | 2024-08-15 | current |
| Airforms LLC | Oil Cooler Bar Assy AF1250965-1 | 1250965-1 | Textron Aviation Inc. TU206F, TU206G, T210L | 2024-08-15 | current |
| Airforms LLC | Upper Oil Cooler Baffle Assy AF1255036-3 | 1255036-3 | Textron Aviation Inc. T210N | 2024-08-15 | current |
| Stoots Aviation LLC | Oil Cooler Bracket 170180-2 | Modification Article | Textron Aviation Inc. 170A, 170B, 172 | 2024-05-16 | current |
| Stoots Aviation LLC | Oil Cooler Bracket 170180-3 | Modification Article | Textron Aviation Inc. 170A, 170B, 172 | 2024-05-16 | current |
| Stoots Aviation LLC | Oil Cooler Shroud 170180-6 | Modification Article | Textron Aviation Inc. 170A, 170B, 172 | 2024-05-16 | current |
| Honeywell International INC. | Oil Cooler L8602050 | L8602050 | Harbin Hafei... Y12I IV, Y12E | 2023-04-13 | current |
| Honeywell International INC. | Oil Cooler 13E41-5 | 600-75122-7 | MHI RJ Aviation ULC CL-600-2B19 (Regional Jet Series 100) | 2023-03-28 | current |
| Honeywell International INC. | Oil Cooler Bypass Valve 1043V0300 | 1A6573 Rev. C 8-14-86 | Pratt & Whitney Division PW2037, PW2037M, PW2040 | 2023-03-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L8538100 | Bell Helicopter Part Number 209-062-501-5 | Bell Textron Inc. 212 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L8538100 | Harrison P/N 8538100 | Bell Textron Inc. 212 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L8537653 | 8537651 | Bell Textron Inc. 212 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L639151 | 639151 | Continental... IO-470-L, IO-470-F | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L639151 | 639151 | Continental IO-520-A, IO-520-F | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L639151 | 639151 | Textron Aviation Inc 185A, 185B, 185C | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assy L8537831 | 8537831 | Ontic Engineering... SA226-TC, SA226-AT, SA226-T | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assy L8543909 | 206-360-501-101 | Bell 206L-1, 206L-3 (SN 51001 to 51155) | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L639151 | 639151 | Interceptor 200D | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L8540012 | 8540012 | Viking Air Limited DHC-6-1, DHC-6-100, DHC-6-200 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assy L8546922 | 8546922 | Ontic Engineering... SA227-AT, SA227-TT | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L8540252 | 8540252 | Viking Air Limited SD3-30, SD3-60 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assy L8538233 | 8538233 | Centerpointe Aerospace Inc S-58 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L8535233 | 8535233 | Embraer S.A. EMB-110P1, EMB-110P2 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assy L8533850 | 8533850 | Textron Aviation Inc. 65 (L-23F), A65, 65-80 | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assy L8540554 | 8540554 | Bell Textron Canada Limited 206L | 2023-02-23 | current |
| Honeywell International INC. | Oil Cooler Assembly L8537651 | 8537651 | Bell Textron Inc. 212 | 2023-02-23 | current |
| Honeywell International US LLC | Oil Cooler Assembly L639151 | 639151 | Textron Aviation Inc 185A, 185B, 185C | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L639151 | 639151 | Continental IO-520-A, IO-520-F | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L639151 | 639151 | Continental... IO-470-L, IO-470-F | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L639151 | 639151 | Interceptor 200D | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assy L8546922 | 8546922 | M7 Aerospace LLC SA227 AT, SA227 TT | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L8537653 | 8537651 | Bell 212 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assy L8533850 | 8533850 | Textron Aviation 65 (L-23F), A65, 65-80 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assy L8543909 | 206-360-501-101 | Bell 206L-1, 206L-3 (SN 51001 to 51155) | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assy L8538233 | 8538233 | Centerpointe Aerospace Inc S-58 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L8538100 | Harrison P/N 8538100 | Bell 212 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L8538100 | Bell Helicopter Part Number 209-062-501-5 | Bell 212 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L8540012 | 8540012 | Viking Air Limited DHC-6-1, DHC-6-100, DHC-6-200 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L8537651 | 8537651 | Bell 212 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L8535233 | 8535233 | Yaborã EMB-110P1, EMB-110P2 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assembly L8540252 | 8540252 | Viking Air Limited SD3-30, SD3-60 | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assy L8537831 | 8537831 | M7 Aerospace LLC SA226 TC, SA226 AT, SA226 T | 2023-02-21 | current |
| Honeywell International US LLC | Oil Cooler Assy L8540554 | 8540554 | Bell 206L | 2023-02-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000590 | Viking Air LimitedC6SC1141-3 | Viking Air Limited DHC-6-400 | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000618 | Stewart Warner 10717C | Bombardier DHC-3 When modified IAW: Texas... | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000960 | Continental 654572Niagara 10278A | Teledyne Continental Motors IO-520-B, IO-520-BA, IO-520-BB | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000950 | M7 Aerospace LLC27-62056-001, 27-19255-005,... | M7 Aerospace LLC SA226-T, SA226-AT | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000934 | Continental 646880Niagara 20591A | Teledyne Continental Motors IO-360-A, IO-360-AB, IO-360-C | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000618 | Honeywell / Lori L8538233 | Bombardier DHC-3 When modified IAW: Vazar, Inc.... | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000997 | 27-19255-001Harrison P/N: 8546922 | Fairchild Aircraft SA227-AC (C-26A), SA227-PC, SA227-BC (C-26A) | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000925 | Continental 627392Niagara 20585A | Teledyne Continental Motors O-470-A, O-470-B, O-470-E | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000590 | Honeywell/Lori L8540012 | Bombarbier DHC-6-100, DHC-6-200, DHC-6-300 | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000950 | Harrison 8537831Niagara 20012A | Beech A36A36TC modified IAW STC3523NM | 2022-10-21 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000950 | Harrison 8537831Niagara 20012A | Fairchild Aircraft SA226-TC | 2022-10-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160282-5 | 160282-5 | Yaborã EMB-120 | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160282-6 S/1 | 160282-6 S/1 | Yaborã EMB 120 | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 152050-5-1 | 152050-5-1 | Boeing DC-9-81 (MD-81), DC-9-82 (MD-82),... | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160282-4 | 160282-4 | Yaborã EMB 120 | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 158210-16 | 9037M23P11 | General Electric Company CF6-50C, CF6-50E | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160052-1 | 160052-1 | BAE Systems... BAe 146-100A, BAE 146-200A, BAE 146-300A | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 157790-6 | 157790-6 | Boeing 747-100 Series, 747-200B Series,... | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 152050-5-1 | 152050-5-1 | Boeing DC-9-31, DC-9-32, DC-9-32 (VC-9C) | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160282-3 | 160282-3 | Yaborã EMB 120 | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160282-2 | 160282-2 | Yaborã EMB 120 | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160282-1 | 160282-1 | Yaborã EMB 120 | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 152050-5-1 | 152050-5-1 | Boeing DC-9-51 | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 160516-2 | 160516-2 | Rolls-Royce RB211 Trent 875-17, RB211 Trent... | 2021-04-21 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8537653 | 209-062-501-001 | Bell 212, 412 | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler Assy L8535233 | 8535233 | Embraer EMB-110P1, EMB-110P2 | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8528061 | 8528061 | Sikorsky S-61A, S-61D, S-61E | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler Assy L8535233 | 8535233 | Pilatus PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2 | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 28E99-8 | 28E99-8 | De Havilland... DHC-8-100 Series DHC-8-200 Series... | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8537653 | 8537653 | Bell 212, 412 | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8528061 | S6135-6401-1 | Sikorsky S-61A, S-61D, S-61E | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler Assy L8543909 | Bell Helicopter Textron 206-360-501-101 | Bell 206L-1 206L-3 (SN 51001 to 51155) | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8537651 | 8537651 | Bell 212, 412 | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8537651 | 209-062-501-002 | Bell 212, 412 | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler 28E99-7 | 28E99-7 | De Havilland... DHC-8-100 Series DHC-8-200 Series... | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8538100 | 8538100 | Bell 212, 412 | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler Assy L8543909 | Harrison Division 8543909 | Bell 206L-1 206L-3 (SN 51001 to 51155) | 2020-07-26 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8538100 | 209-062-501-005 | Bell 212, 412 | 2020-07-26 | current |
| Turboplus Aircraft Systems INC | Oil Cooler Mtg. Bracket Assy. 18006 | Modification Parts | Piper Aircraft, Inc. PA32RT-300T, (Turbo Lance II), PA-32R-301T | 2018-11-13 | current |
| Turboplus Aircraft Systems INC | Oil Cooler Plenum Assy 18007 | Modification Parts | Piper Aircraft, Inc. PA32RT-300T, (Turbo Lance II), PA-32R-301T | 2018-11-13 | current |
| Rubbert Aircraft Services | Oil Cooler 10 Element RR-1114.1 | Modification Part | Piper Aircraft Inc. PA-12, PA-12S, PA-14 | 2017-07-24 | current |
| Rubbert Aircraft Services | Oil Cooler 10 Element RR-1114.2 | Modification Part | Piper Aircraft Inc. PA-12, PA-12S, PA-14 | 2017-07-24 | current |
| Meggitt (Troy) INC | Oil Cooler, MGB 10888A | 3G6320V03652 | Leonardo Elicotteri S.p.A. AW139/AB139 | 2017-01-18 | current |
| Extex Engineered Products INC | Oil Cooler 37D400479P101AL | 37D400479P101 | General Electric CT58-100-2, 110-1, 110-2 | 2016-09-07 | current |
| Aerospace Composites Solutions, INC. | Oil Cooler Inlet Assy 201321-502-001 | 201321-502-001 | Cessna Caravan 208B, Caravan 208 | 2015-11-22 | current |
| Airforms LLC | Oil Cooler Baffle, Assy AF1255000-1 | 1255000-1 | Cessna Aircraft Company 210K, 210L | 2015-08-02 | current |
| Airforms LLC | Oil Cooler Baffle Assembly AF1255026-1 | 1255026-1 | Cessna Aircraft Company 210L, 210M, 210N | 2015-07-13 | current |
| Airforms LLC | Oil Cooler Baffle Assembly AF1255025-1 | 1255025-1 | Cessna Aircraft Company 210L, 210M, 210N | 2015-07-13 | current |
| Airforms LLC | Oil Cooler Baffle Assembly AF1255020-1 | 1255020-1 | Cessna Aircraft Company 210L, 210M, 210N | 2015-07-13 | current |
| Airforms LLC | Oil Cooler Baffle Assy AF1255020-1 | 1255020-1 | Cessna Aircraft Company U206G | 2015-02-01 | current |
| Airforms LLC | Oil Cooler Baffle Assy AF1255000-1 | 1255000-1 | Cessna Aircraft Company Cessna 206. U206, P206 w/9.5 INCH... | 2015-02-01 | current |
| Airforms LLC | Oil Cooler Baffle Assy AF1255026-1 | 1255026-1 | Cessna Aircraft Company U206G | 2015-02-01 | current |
| Aerometals | Oil Cooler Tube Assy MDL-AMC-013 | Modification Part | MDHI Hughes) (369D, 369E, 369FF | 2015-01-21 | current |
| Airforms LLC | Oil Cooler Baffle AF0755001-24 | 0755001-24 | Cessna 182 w/ 7.625 INCH congealing type oil cooler | 2015-01-04 | current |
| Airforms LLC | Oil Cooler Baffle AF0755050-15 | N/A | Cessna 185 w/ 7.875 INCH non-congealing... | 2015-01-04 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000925 | Continental , 627392 , Niagara 20585A | Teledyne Continental Motors O-470-A, B, E | 2014-02-06 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000618 | Honeywell / Lori L8538233 | Bombardier DHC-3 When modified IAW Vazar, Inc.... | 2014-02-06 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000960 | Continental 654572 , Niagara 10278A | Teledyne Continental Motors IO-520-B, BA, BB | 2014-02-06 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000934 | Continental , 646880 , Niagara 20591A | Teledyne Continental Motors IO-360-A, AB, C | 2014-02-06 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000997 | 27-19255-001 , Harrison 8546922 | Fairchild Aircraft SA227-AC, (C-26A), SA227-PC | 2014-02-06 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000590 | Honeywell/Lori , L8540012 | Bombarbier DHC-6-100, DHC-6-200, DHC-6-300 | 2014-02-06 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000618 | Stewart Warner 10717C | Bombardier DHC-3 When modified IAW Texas... | 2014-02-06 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000950 | Harrison 8537831 , Niagara 20012A , M7... | Fairchild Aircraft SA226-TC) M7 Aerospace LLC (SA226-T,... | 2014-02-06 | current |
| Cub Crafters INC | Oil Cooler Doubler 101306-02 | Modification Part | Piper Aircraft, Inc. PA-18, PA -18S, PA-18 105 (Special) | 2013-09-23 | current |
| Honeywell International INC. Honeywell Aerospace | Oil Cooler L8602050 | L8602050 | HAIC Y12IV, Y12E | 2013-07-01 | current |
| Kelly Aerospace Thermal Systems, LLC | Oil Cooler Door KATS-11-008 | Modification Part | Cessna Aircraft Company LC41-550FG, LC42-550FG | 2012-09-26 | current |
| Aviation Products Systems INC | Rear Oil Cooler Baffle Assembly APS180-534 | Modification Part | Piper PA-18-150 Series, PA-18A-150 Series,... | 2012-05-29 | current |
| Stoots Aviation LLC | Oil Cooler Baffling Parts Doubler ST-316 | Modification Parts | Cessna 175, 175A, 175B | 2012-01-26 | current |
| Stoots Aviation LLC | Oil Cooler Shroud 170180-4 | Modification Parts | Cessna 170A, 170B, 172 | 2012-01-25 | current |
| Stoots Aviation LLC | Oil Cooler Bracket 170180-3 | Modification Parts | Cessna 170A, 170B, 172 | 2012-01-25 | current |
| Stoots Aviation LLC | Oil Cooler Baffling Parts Doubler ST-316 | Modification Parts | Cessna 175, 175A, 175B | 2012-01-25 | current |
| Aerospace Welding Minneapolis, INC. | Oil Cooler Return Hose Support Bracket 200803-504-056 | Modification Part | Cessna Caravan 208B | 2011-06-29 | current |
| Aerospace Welding Minneapolis, INC. | Oil Cooler/Cowling Support Assembly 200803-504-002 | Modification Part | Cessna Caravan 208B | 2011-06-29 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000997 | 8546922, Harrison 8546922 | Fairchild Aircraft SA227 CC, DC | 2011-01-31 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000997 | 8546922, Harrison 8546922 | Fairchild Aircraft SA227 CC, DC | 2011-01-31 | current |
| Aero-Classics Heat Transfer Products INC | Oil Cooler 8000997 | 27-19255-001 Harrison 8546922 | Fairchild Aircraft SA227-AC (C-26A), SA227-PC, SA227-BC (C-26A) | 2010-06-03 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10941J | 35C2495-05 | Pratt & Whitney Canada PW617F-E | 2008-12-28 | current |
| Airforms LLC | Oil Cooler Assy. AF1250900-1 | 1250900-1 | Cessna P206 Serial No. P206-0420 thru P20600647 | 2008-02-21 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10941J | 35C2495-05 | Pratt & Whitney Canada PW615F-A | 2007-10-18 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10941J | 35C2495-05 | Pratt & Whitney Canada PW610F-A | 2007-10-18 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10941H | 35C2495-04 | Pratt & Whitney Canada PW610F-A | 2007-10-18 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10920D | 3902319-02 | Pratt & Whitney Canada PW980A | 2007-10-18 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10941H | 35C2495-04 | Pratt & Whitney Canada PW615F-A | 2007-10-18 | current |
| Steve'S Aircraft | Oil Cooler Diverter Assembly - Short Stud SA7-00 | Modification Part | Cessna 120, 140, 172 | 2007-07-15 | current |
| Steve'S Aircraft | Oil Cooler Diverter Assembly - Long Stud SA7-00-A | Modification Part | Cessna 120, 140, 172 | 2007-07-15 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10941D | Pratt & Whitney Canada P/N: 35C2495-03 | Pratt & Whitney Canada PW610F-A) (PW615F-A | 2007-03-22 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler, Air Cooled 10941D | Pratt & Whitney Canada P/N: 35C2495-03 | Pratt & Whitney Canada PW610F-A) (PW615F-A | 2006-11-14 | current |
| Airforms LLC | Oil Cooler Assy AF1250900-1 | 1250900-1 | Cessna P206 Serial No. P206-0420 thru P20600647 | 2006-09-20 | current |
| Cascade Aircraft Conversions LLC | Oil Cooler Installation TH3100 | TH3100 | Thrush Aircraft S-2R, S-2R-R3S, -R1340 | 2006-06-27 | current |
| Cascade Aircraft Conversions LLC | Oil Cooler, Support Strap 3140 | Modification Part | Air Tractor AT-300, -301, -302 | 2006-06-19 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler 8432R | Mooney P/N 620016, P/N 620052 | Mooney Aircraft M20E, M20F, M20J | 2005-07-26 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler 8473A | Douglas P/N 5779866 | McDonnell Douglas DC-8 All Series | 2005-07-26 | current |
| Meggitt (Troy) INC (Formerly Stewart Warner South Wind CORP) | Oil Cooler 8406R | Mooney P/N 620036 | Mooney Aircraft M20, M20A, M20B | 2005-07-26 | current |
The first 150 of 237.
Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.