Disc
16 failure reports named the disc in the last ten years, 105 since 1995, most often on the Airbus A321; the condition most often found was "cracked". 78 FAA approvals let 25 companies make a replacement disc, Hrd Aerosystems INC holding the most (20). The reports call it "disc", "disc set", "disc assy", "t3 disc".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 5 |
| 1996 | 8 |
| 1997 | 10 |
| 1998 | 18 |
| 1999 | 8 |
| 2003 | 3 |
| 2004 | 4 |
| 2005 | 5 |
| 2006 | 6 |
| 2007 | 3 |
| 2008 | 4 |
| 2009 | 2 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 3 |
| 2013 | 2 |
| 2015 | 2 |
| 2016 | 1 |
| 2018 | 4 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 1 |
Which system the reports file it under last ten years
Engine9Cabin, seats and restraints2Emergency equipment1Flight controls1Fuel system1Landing gear1Airframe structure1
Reports by system, as a table
| reports | |
|---|---|
| Engine | 9 |
| Cabin, seats and restraints | 2 |
| Emergency equipment | 1 |
| Flight controls | 1 |
| Fuel system | 1 |
| Landing gear | 1 |
| Airframe structure | 1 |
Models most often reporting it last ten years
Airbus A3213Boeing 7473Airbus A3302Boeing 7172Boeing 7371Boeing 7671Cessna 680 Citation Sovereign and Latitude1Pilatus PC-121Sikorsky S-641
Models most reported, as a table
| reports | |
|---|---|
| Airbus A321 | 3 |
| Boeing 747 | 3 |
| Airbus A330 | 2 |
| Boeing 717 | 2 |
| Boeing 737 | 1 |
| Boeing 767 | 1 |
| Cessna 680 Citation Sovereign and Latitude | 1 |
| Pilatus PC-12 | 1 |
| Sikorsky S-64 | 1 |
How it failed the condition found, last ten years
cracked6damaged2leaking2defective1disconnected1eroded1failed1missing1vibration1
Conditions found, as a table
| reports | |
|---|---|
| cracked | 6 |
| damaged | 2 |
| leaking | 2 |
| defective | 1 |
| disconnected | 1 |
| eroded | 1 |
| failed | 1 |
| missing | 1 |
| vibration | 1 |
Engines most often reporting it
Approved replacement parts 78 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a disc and sell it as an approved part for the models named. These are the companies holding such approvals for a disc:
Hrd Aerosystems INC 20Overland Aviation Services CO 6Jet Parts Engineering INC 5Aviatron INC 5Aviation Materials Management INC 4Aviation Engineering Consultants INC (Aeci) 4Rapco INC 3Rapco Fleet Support INC 3R & D Dynamics Corporation 3Panasonic Avionics Corporation 3Pacific Sky Supply INC 3Rotair Industries INC 2Ontic Engineering & Manufacturing INC 2Aviation Materials Management, INC. 2Aviation Materials Management, INC 2Air Technology Engines INC 2Wencor LLC (Formerly Dixie Aerospace LLC) 1Univair Aircraft CORP 1Thales Avionics In-Flight Systems 1Pemac Aviation Supply INC 1Meggitt Safety Systems INC 1L3 Communications Integrated Systems 1Hutchinson Aerospace & Industry INC 1Aviation Products Systems INC 1Ametek Ameron, LLC D/B/A Mass Systems 1
For these models most: Boeing 737 (15), Boeing 727 (10), Boeing 757 (8), Boeing 747 (7), Airbus A320 (7), Pilatus PC-12 (6), Lockheed 382 (5), Airbus A321 (5), Airbus A319 (5), Bombardier CL-600 Challenger and CRJ (4), Mcdonnell Douglas MD-10 (3), Boeing 777 (3).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aviation Products Systems INC | Disc APS159-01200 | 159-01200 when installed with APS Stator... | Textron Aviation Inc. 99, 99A, A99A | 2025-05-22 | current |
| Av8 Pma, LLC. | Disc NPMA-8UN427-19 | 25-8UN427-19 | Textron Aviation Inc. BAe.125 Series 800A, BAe.125 Series... | 2024-01-29 | current |
| Aviatron INC | Disc, Stiffener AVUS3451-46A | 3451-46A | Airbus A318 Model -111, A318 Model -112,... | 2023-03-15 | current |
| Rapco INC | Disc, Rotor RA159-07400 | 159-07400 | Pilatus Aircraft PC-12 (with STC SA01376CH... | 2022-03-16 | current |
| Rapco Fleet Support INC | Disc, Stator RFS232-03500 | 232-03500 | Pilatus Aircraft PC-12 (with STC SA01376CH... | 2022-03-16 | current |
| Rapco Fleet Support INC | Disc, Rotor RFS159-07400 | 159-07400 | Pilatus Aircraft PC-12 (with STC SA01376CH... | 2022-03-16 | current |
| Rapco INC | Disc, Stator RA232-03500 | 232-03500 | Pilatus Aircraft PC-12 (with STC SA01376CH... | 2022-03-16 | current |
| Ametek Ameron LLC D/B/A Mass Systems | DISC, SAFETY M10003742 | 10003742 | Airbus A300B4-605R | 2022-02-22 | current |
| R & D Dynamics Corporation | Disc - Thrust RD2206781-1 | 2206781-1 | Airbus A300 A300, Model B2-1A. A300, Model... | 2020-12-01 | current |
| Rapco INC | Disc, Rotor RA159-07400 | Parker Hannifin Corp. 159-07400, when... | Pilatus Aircraft, Ltd. PC-12 (with STC SA01376CH... | 2020-05-18 | current |
| Rapco Fleet Support INC | Disc, Rotor RFS159-07400 | Parker Hannifin Corp. 159-07400, when... | Pilatus Aircraft, Ltd. PC-12 (with STC SA01376CH... | 2020-04-26 | current |
| Ametek Ameron, LLC D/B/A Mass Systems | Disc, Safety M10008435 | 10008435 | Airbus A310, A310-322, A310-324 | 2020-01-08 | current |
| Aviatron INC | Disc, Stiffener AVUS3451-46A | 3451-46A | Airbus A318 Series, A318 Model -111, A318 Model -112 | 2019-09-22 | current |
| Aviatron INC | Disc, Stiffener AVUS3451-46A | 3451-46A | Airbus A318 Series, A318 Model -111, A318 Model -112 | 2018-03-13 | current |
| Jet Parts Engineering INC | Disc, Stop 2955162JP-1 | 2955162-1 | Airbus A330-201, A330-202, A330-203 | 2017-12-06 | current |
| Jet Parts Engineering INC | Disc, Spacer 2955135JP-1 | 2955135-1 | Airbus A330-201, A330-202, A330-203 | 2017-12-06 | current |
| Aviatron INC | Disc, Stiffener AVUS3451-46A | 3451-46A | Airbus A318 Series, A318 Model -111, A318 Model -112 | 2017-06-28 | current |
| Hutchinson Aerospace & Industry INC | DISC, FLEXIBLE ENGINE MOUNT MB100892 | MB100892 | Viking Air Ltd DHC-2 Mk. I, DHC-3 | 2017-05-24 | current |
| Aviatron INC | Disc, Stiffener AVUS3451-46A | 3451-46A | Airbus A318 Series, A318 Model -111, A318 Model -112 | 2016-07-20 | current |
| Hrd Aerosystems INC | Disc P811708 | Walter Kidde 811708, A811708 | Boeing 737-100, -200, -300 | 2016-03-13 | current |
| Hrd Aerosystems INC | Disc P802414 | Walter Kidde 802414, A802414 | Boeing 727, 727C, 727-100 | 2016-03-13 | current |
| Hrd Aerosystems INC | Disc P806011 | Walter Kidde 806011, A806011 | Boeing 727, 727C, 727-100 | 2016-03-13 | current |
| Hrd Aerosystems INC | Disc P800507 | Walter Kidde 800507, A800507 | Lockheed 382, 382B, 382F | 2016-03-13 | current |
| Panasonic Avionics Corporation | DISC/SVU CABLE RD-AM6310-BZ | RD-AM6310-BZ | Boeing 777-200 | 2015-04-19 | current |
| Panasonic Avionics Corporation | DISC/SVU CABLE RD-AM6210-96 | RD-AM6210-96 | Boeing 777-200 | 2015-04-19 | current |
| Panasonic Avionics Corporation | DISC/SVU CABLE RD-AM6310-60 | RD-AM6310-60 | Boeing 777-200 | 2015-04-19 | current |
| Aviation Materials Management, INC | Disc 287N6203-22 | 287N6203-22 | Boeing 757-200 Series, 757-300 Series | 2015-02-12 | current |
| Aviation Materials Management, INC | Disc 251N2148-1 | 251N2148-1 | Boeing 757-200 Series, 757-200CB Series,... | 2015-02-12 | current |
| Meggitt Safety Systems INC | Disc 13159 | 13159 | Israel Aircraft 1121 | 2015-01-05 | current |
| Aviation Materials Management, INC. | Disc 287N6203-22 | 287N6203-22 | Boeing 757-200 Series, 757-300 Series | 2014-09-04 | current |
| Aviation Materials Management, INC. | Disc 251N2148-1 | 251N2148-1 | Boeing 757-200 Series, 757-200CB Series,... | 2014-09-04 | current |
| Hrd Aerosystems INC | Disc P802414 | Walter Kidde, 802414, A802414 | Boeing 727, 727C, 727-100 | 2014-05-27 | current |
| Hrd Aerosystems INC | Disc P806011 | Walter Kidde, 806011, A806011 | Boeing 727, 727C, 727-100 | 2014-05-27 | current |
| Hrd Aerosystems INC | Disc P800507 | Walter Kidde, 800507, A800507 | Lockheed 382, 382B, 382F | 2014-05-27 | current |
| Hrd Aerosystems INC | Disc P811708 | Walter Kidde, 811708, A811708 | Boeing 737-100, -200, -300 | 2014-05-27 | current |
| Hrd Aerosystems INC | Disc P811708 | Walter Kidde 811708, A811708 | Boeing 737-100, -200, -300 | 2013-11-21 | current |
| Hrd Aerosystems INC | Disc P800507 | Walter Kidde 800507, A800507 | Lockheed 382, 382B, 382F | 2013-11-21 | current |
| Hrd Aerosystems INC | Disc P802414 | Walter Kidde 802414, A802414 | Boeing 727, 727C, 727-100 | 2013-11-21 | current |
| Hrd Aerosystems INC | Disc P806011 | Walter Kidde, 806011, A806011 | Boeing 727, 727C, 727-100 | 2013-11-21 | current |
| Ontic Engineering & Manufacturing INC | Disc, Cooling Shroud 1230579-5 | 1230579-5 | Honeywell 700-4B (DC-10, MD-10), 700-4E (MD-11) | 2013-11-14 | current |
| Ontic Engineering & Manufacturing INC | Disc, Cooling Shroud 1230579-1 | 1230579-1 | Honeywell 700-4B (DC-10, MD-10), 700-4E (MD-11) | 2013-11-14 | current |
| Aviation Materials Management INC | Disc 251N2148-1 | 251N2148-1 | Boeing 757-200 Series, 757-200CB Series,... | 2013-02-26 | current |
| Aviation Materials Management INC | Disc 287N6203-22 | 287N6203-22 | Boeing 757-200 Series, 757-300 Series | 2013-02-26 | current |
| Wencor LLC (Formerly Dixie Aerospace LLC) | Disc, Friction 13696-1WD | Hamilton Sundstrand 13696-1 | Boeing DC-9-11, -14, -15 | 2011-07-05 | current |
| Aviation Materials Management INC | Disc 287N6203-22 | 287N6203-22 | Boeing 757-200 Series, 757-300 Series | 2010-10-05 | current |
| Aviation Materials Management INC | Disc 251N2148-1 | 251N2148-1 | Boeing 757-200 Series, 757-200CB Series,... | 2010-10-05 | current |
| L3 Communications Integrated Systems | DISC D0045D0040A0010 | Modification Part | Hawker Beechcraft B300, with STC SA10688SC-D installed | 2010-08-15 | current |
| R & D Dynamics Corporation | Disc, Seal RD792862-1 | 792862-1 | Bombardier, Inc. CL-600-2A12 CL-600-2B16 CL-600-2B19 | 2007-09-19 | current |
| Thales Avionics In-Flight Systems | DISC, TPL AUDIO, USB 180844-001 | 180844-001 | Airbus A320-111, -211, -212 | 2007-08-21 | current |
| R & D Dynamics Corporation | Disc, Seal RD792862-1 | 792862-1 | Bombardier, Inc. CL-600-2A12, CL-600-2B16, CL-600-2B19 | 2006-07-24 | current |
| Jet Parts Engineering INC | Disc, Wear 806164JP-1 | Hamilton Sundstrand 806164-1 | Boeing Hamilton Sundstrand High Pressure... | 2005-04-17 | current |
| Jet Parts Engineering INC | Disc, Brake 3229582JP-3 | Honeywell P/N 3229582-3 | Bombardier/Canadair CL-600-2B19 | 2005-03-08 | current |
| Hrd Aerosystems INC | Disc P811708 | Walter Kidde 811708, A811708 | Boeing 737-100, -200, -300 | 2005-02-06 | current |
| Hrd Aerosystems INC | Disc P802414 | Walter Kidde 802414, A802414 | Boeing 727, 727C, 727-100 | 2005-02-06 | current |
| Hrd Aerosystems INC | Disc P806011 | Walter Kidde 806011, A806011 | Boeing 727, 727C, 727-100 | 2005-02-06 | current |
| Hrd Aerosystems INC | Disc P800507 | Walter Kidde 800507, A800507 | Lockheed 382, 382B, 382F | 2005-02-06 | current |
| Jet Parts Engineering INC | Disc, Brake 3229582JP-3 | Honeywell 3229582-3 | Bombardier, Inc. CL-600-2B19 | 2005-01-23 | current |
| Hrd Aerosystems INC | Disc P800507 | Walter Kidde 800507 A800507 | Lockheed 382, 382B, 382F | 2004-03-31 | current |
| Hrd Aerosystems INC | Disc P806011 | Walter Kidde 806011 A806011 | Boeing 727, 727C, 727-100 | 2004-03-31 | current |
| Hrd Aerosystems INC | Disc P802414 | Walter Kidde 802414 A802414 | Boeing 727, 727C, 727-100 | 2004-03-31 | current |
| Hrd Aerosystems INC | Disc P811708 | Walter Kidde 811708 A811708 | Boeing 737-100, -200, -300 | 2004-03-31 | current |
| Pacific Sky Supply INC | Disc - Filter 513700P | 513700 | Hamilton Standard Division 54H60-91, -117 | 2004-01-26 | current |
| Aviation Engineering Consultants INC (Aeci) | Disc, Shock AEC-380003-7 | Beechcraft P/N 380003-7 | Raytheon Beechcraft 19, 19A, B19 | 2003-07-09 | current |
| Aviation Engineering Consultants INC (Aeci) | Disc, Shock AEC-380098-1 | Beechcraft P/N 380098-1 | Raytheon Beechcraft A24R, B24R, and C24R... | 2003-07-09 | current |
| Aviation Engineering Consultants INC (Aeci) | Disc, Shock AEC-169-380098-1 | Beechcraft P/N 169-380098-1 | Raytheon Beechcraft A24R, B24R, and C24R... | 2003-07-09 | current |
| Aviation Engineering Consultants INC (Aeci) | Disc, Shock AEC-169-380003-7 | Beechcraft P/N 169-380003-7 | Raytheon Beechcraft 19, 19A, B19 | 2003-07-09 | current |
| Pacific Sky Supply INC | Disc - Bimetallic 546553P | 546553 | Hamilton Standard Division 54H60-91, -117 | 1999-11-17 | current |
| Air Technology Engines INC | Disc, Turbine, Turbine Engine- First Stage A1-100-133-01 | Lycoming 1-100-133-01 | Textron Lycoming T5313B, T5317A, T5317A-1 | 1999-03-14 | current |
| Air Technology Engines INC | Disc, Turbine Rotor-Second Stage Power A1-140-272-04 | Lycoming 1-140-272-04 | Textron Lycoming T5313B, T5317A, T5317A-1 | 1999-03-14 | current |
| Overland Aviation Services CO | Disc OA33400102 | HTL 33400102 | Boeing 747 used on P/N's 60B60001-1, -2, -3 | 1997-09-16 | current |
| Overland Aviation Services CO | Disc OA33440018-2 | HTL 33400102 or Overland Aviation 0A33400102 | Boeing 747 used on P/N's 60B60001-1, -2, -3 | 1997-09-16 | current |
| Overland Aviation Services CO | Disc OA33400200 | HTL 33400200 | Boeing 747 used on P/N's 60B90105-1, -2, -5 | 1997-09-16 | current |
| Overland Aviation Services CO | Disc OA33440018-1 | HTL 33400100 or Overland Aviation OA33400100 | Boeing 747 used on P/N's 60B90105-1, -2, -5 | 1997-09-16 | current |
| Overland Aviation Services CO | Disc OA33400100 | HTL 33400100 | Boeing 747 used on P/N's 60B90105-1, -2, -5 | 1997-09-16 | current |
| Overland Aviation Services CO | Disc OA33440016-1 | HTL 33400200 or Overland Aviation OA33400200 | Boeing 747 used on P/N's 60B90105-1, -2, -5 | 1997-09-16 | current |
| Pemac Aviation Supply INC | Disc, Rupture P33440016-4 | HTL 33440016-4 | Airbus A320-211, -231, A330-301 | 1997-07-21 | current |
| Rotair Industries INC | Disc Assembly R6137-64372-1 | S6137-64372-1 | Sikorsky S61R | 1997-02-27 | current |
| Rotair Industries INC | Disc R6130-80045-7 | S6130-80045-7 | Sikorsky S-61A (TC H2EA) S-61L/N/M/R... | 1996-03-30 | current |
| Univair Aircraft CORP | Disc Dwg No. U14446-000 | Piper 14446-000 | Piper PA-22 | 1995-06-27 | current |
| Pacific Sky Supply INC | Disc - Insulating 560768P | Hamilton Standard 560768 | Hamilton Standard Division 54H60-91 and -117 | 1994-05-31 | current |
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.