Hub
47 failure reports named the hub in the last ten years, 1,090 since 1995, most often on the Boeing 737; the condition most often found was "cracked". 30 FAA approvals let 16 companies make a replacement hub, Dec Technologies INC holding the most (5). The reports call it "hub", "hub assy", "hub set", "front hub".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 76 |
| 1996 | 380 |
| 1997 | 106 |
| 1998 | 64 |
| 1999 | 54 |
| 2000 | 64 |
| 2001 | 33 |
| 2002 | 58 |
| 2003 | 30 |
| 2004 | 43 |
| 2005 | 20 |
| 2006 | 18 |
| 2007 | 13 |
| 2008 | 8 |
| 2009 | 14 |
| 2010 | 16 |
| 2011 | 16 |
| 2012 | 13 |
| 2013 | 3 |
| 2014 | 3 |
| 2015 | 11 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 8 |
| 2019 | 7 |
| 2020 | 1 |
| 2021 | 8 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 6 |
| 2025 | 4 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Propeller | 19 |
| Rotorcraft systems | 10 |
| Airframe structure | 9 |
| Engine | 7 |
| Electrical power | 1 |
| Landing gear | 1 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| cracked | 21 |
| damaged | 6 |
| leaking | 4 |
| worn | 4 |
| gouged | 2 |
| unknown | 2 |
| corroded | 1 |
| debonded | 1 |
| excess play | 1 |
| failed | 1 |
Engines most often reporting it
Approved replacement parts 30 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a hub and sell it as an approved part for the models named. These are the companies holding such approvals for a hub:
For these models most: Boeing 737 (5), Boeing 727 (5), Boeing 707 (5), Md Helicopters Inc 369 (3), Mcdonnell Douglas DC-9 (3), Hughes 369 500 series helicopters (3), Boeing 757 (3), Sikorsky S-61 (2), Mcdonnell Douglas DC-10 (2), Douglas DC-8 (2), Bombardier CL-600 Challenger and CRJ (2), Boeing 747 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Seal Dynamics INC | Hub 452T2201-5SD | 452T2201-5 | The Boeing Company 767-200 Series, 767-300 Series,... | 2025-10-28 | current |
| Rockwell Collins INC | E-Hub 1303214-100 | 1303214-100 | Airbus A330-203 | 2016-06-01 | current |
| Rockwell Collins INC | E-Hub 1303214-100 | 1303214-100 | Airbus A340-313 | 2016-06-01 | current |
| Aerometals | Hub Assy - Tail Rotor MDL-AMC-025 | Modification Part | MDHI Hughes) (369A, 369HM, 369HS | 2015-01-21 | current |
| Ontic Engineering & Manufacturing INC | Hub, Rear 3602283-1 | 3602283-1 | Honeywell 700-4B (DC-10, MD-10), 700-4E (MD-11) | 2013-11-14 | current |
| Pacific Sky Supply INC | Hub, Sun Gear 23057976P | 23057976 | Rolls-Royce 501-D13, -D13A, -D13D | 2012-04-30 | current |
| Aerometals | Hub Assy - Tail Rotor AM369A1725-5 | 369A1725-5 | MD Helicopters, Inc. MDHI) (369A, 369HM, 369HS | 2009-03-03 | current |
| Spirit Aerosystems INC | HUB ASSY 411N2016-26 | 411N2016-26 | Boeing 757-200 SERIES, 757-300 SERIES | 2007-03-02 | current |
| Aerometals | Hub Assy - Tail Rotor AM369A1725-5 | 369A1725-5 | MD Helicopters, Inc. MDHI) (369A, 369HM, 369HS | 2006-12-07 | current |
| Spirit Aerosystems INC | HUB ASSY 411N2016-26 | 411N2016-26 | Boeing 757-200 SERIES, 757-300 SERIES | 2006-01-04 | current |
| Goodrich Corporation | Hub, Roller Lower Deck FK-DC10-642 | AWJ7169-1 | Boeing DC-10-10F, DC-10-30F, DC-10-40F | 2004-10-11 | current |
| Adpma LLC | Hub Assembly PMA80014-105 | Allied-Signal 3500395-5 | Bombardier, Inc. CL-600-2B19 When Allied Signal P/N:... | 2004-04-27 | current |
| Ram Aircraft Limited Partnership | Hub Assembly, Alternator Gear Driven 2193-1 | TCM 640934 | Teledyne Continental IO-520, IO-550, TSIO-550 | 2004-02-12 | current |
| Ram Aircraft Limited Partnership | Hub Assembly, Alternator Gear Driven 2193-2 | TCM 640933 | Teledyne Continental GTSIO-520 series engines with gear... | 2004-02-12 | current |
| Adpma LLC | Hub Assembly PMA80014-105 | Allied-Signal 3500395-5 | Bombardier, Inc. CL-600-2B19 | 2003-04-17 | current |
| Rockwell Collins INC | E-hub 1303214-100 | 1303214-100 | Airbus A340-313 | 2000-09-19 | current |
| Tara Technology Corporation, C/O G&N Rubicon Gear INC | Hub, Internal Gear 3500779-1TTC | AC3500779-1 | Boeing 707-100B Long Body, -100B Short Body, -300B | 2000-01-31 | current |
| Aero Certification Services LLC, C/O Sungear INC | Hub, Internal Gear 3500779-1AC | Aero Certification Services AC3500779-1 | Boeing 707-100B Long Body, 707-100B Short... | 1999-01-14 | current |
| Aero Certification Services LLC, C/O Sungear INC | Hub, Internal Gear AC3500779-1 | AlliedSignal 3500779-1 | Boeing 707-100B Long Body, -100B Short Body... | 1998-03-26 | current |
| Rotair Industries INC | Hub R6110-33003-0, Dwg.... | Sikorsky P/N S6110-33003-0 | Sikorsky S61A/D/R | 1998-01-20 | current |
| Rotair Industries INC | Hub R6110-33003-0, Dwg.... | Sikorsky P/N S6110-33003-0 | Sikorsky S61L/N/NM | 1998-01-20 | current |
| Dec Technologies INC | Hub, Internal Gear DEC31-098-501 | Airesearch 3501123-1 | Boeing 747 and 767, CF6-6, -45 | 1997-10-22 | current |
| Dec Technologies INC | Hub, Internal Gear DEC31-097-501 | Garrett 3502745-3 | CFM International CFM56-5-A1, -5A3 and -5A1/F | 1997-10-22 | current |
| Dec Technologies INC | Hub, Internal Gear DEC31-083-501 | Garrett 3502214-1 | Boeing 737 | 1997-10-22 | current |
| Dec Technologies INC | Hub, Internal Gear DEC31-099-501 | Airesearch 3501758-1 | Boeing 747, 757 and 767 | 1997-10-22 | current |
| Aero Certification Services LLC, C/O Gerhardt Gear CO | Hub, Internal Gear AC3500779-1 | AlliedSignal 3500779-1 | Boeing 707, 720, 727 | 1997-08-24 | current |
| Encotech INC | Hub 4763561EI-4 | McDonnell Douglas 4763573-501 | McDonnell Douglas DC-8, DC-9, DC-10 | 1997-04-07 | current |
| Dec Technologies INC | Hub, Internal Gear DEC31-021-501 | Airesearch 3500779-1 | Boeing 707, 727 and 737, DC-9 and MD-80 | 1996-10-29 | current |
| Pacific Sky Supply INC | Hub - Sun Gear 6793516P | Allison 6793516 | Allison Engine 501-D13, 501-D13A, 501-D13D | 1994-07-27 | current |
| Rotair Industries INC | Hub, Main Rotor R1510-23001-4 | Sikorsky S1510-23001-4 | Sikorsky Silver Bay Logging CH-54A Siller... | 1992-12-31 | 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.