Stiffener
3,942 failure reports named the stiffener in the last ten years, 8,734 since 1995, most often on the Boeing 737; the condition most often found was "cracked". 740 FAA approvals let 25 companies make a replacement stiffener, Spirit Aerosystems INC holding the most (220). The reports call it "stiffener", "t-stiffener".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 155 |
| 1996 | 160 |
| 1997 | 147 |
| 1998 | 195 |
| 1999 | 154 |
| 2000 | 238 |
| 2001 | 262 |
| 2002 | 176 |
| 2003 | 141 |
| 2004 | 150 |
| 2005 | 170 |
| 2006 | 222 |
| 2007 | 209 |
| 2008 | 256 |
| 2009 | 257 |
| 2010 | 279 |
| 2011 | 311 |
| 2012 | 286 |
| 2013 | 321 |
| 2014 | 371 |
| 2015 | 332 |
| 2016 | 290 |
| 2017 | 337 |
| 2018 | 406 |
| 2019 | 497 |
| 2020 | 553 |
| 2021 | 489 |
| 2022 | 369 |
| 2023 | 267 |
| 2024 | 260 |
| 2025 | 245 |
| 2026 | 229 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Airframe structure | 3,845 |
| Engine | 83 |
| Fuel system | 7 |
| Landing gear | 4 |
| Cabin, seats and restraints | 3 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
cracked3,155corroded449damaged96chafed47none32sheared28gouged17broken15bent10elongated10
Conditions found, as a table
| reports | |
|---|---|
| cracked | 3,155 |
| corroded | 449 |
| damaged | 96 |
| chafed | 47 |
| none | 32 |
| sheared | 28 |
| gouged | 17 |
| broken | 15 |
| bent | 10 |
| elongated | 10 |
Engines most often reporting it
Approved replacement parts 740 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a stiffener and sell it as an approved part for the models named. These are the companies holding such approvals for a stiffener:
Spirit Aerosystems INC 220Goodrich Aerostructures (Formerly Rohr INC) 136Rohr INC (See Goodrich Aerostructures) 81Amsafe Bridport 50Cascade Aviation Services INC 34Trw Aeronautical Systems, Lucas Aerospace 21Duncan Aviation INC 21Lucas Aerospace Cargo System 16Eagle Air Engineering INC 15Aws (USA) INC 15Gemini Engineering 14Airborne Maintenance & Engineering Services 11Adaptive Aerospace CORP 11Triumph Interiors LLC (Formerly Aid International) 10Gulfstream Aerospace LP 10Galaxy Aerospace CO LP 10Aviation Enterprises 10Peco Manufacturing INC 9L3 Communications Integrated Systems 8International Aero Interiors 8Magee Plastics Company 7Peco Manufacturing CO. INC 6Peco INC 6Goodrich Landing Gear 6Rockwell Collins INC 5
For these models most: Boeing 747 (173), Boeing 737 (142), Boeing 757 (108), Boeing 767 (47), Boeing 777 (34), Israel Aircraft Industries 1124 (20), Boeing 707 (19), Cessna 560 Citation V, Ultra, Encore and Excel (12), Boeing 727 (12), Cessna T337 (10), Cessna P337 (10), Cessna 337 Skymaster (10).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aircorps Aviation, LLC | Stiffener F9XW2318110A0013 | F9XW2318110A0013 | Dassault Aviation FALCON 900EX | 2026-04-27 | current |
| Airbus Helicopters, INC. | STIFFENER, FWD L231U 0341 303 | Modification Part | Airbus Helicopters... EC135P3, EC135T3 | 2026-03-10 | current |
| Airbus Helicopters, INC. | STIFFENER, AFT L231U 0341 304 | Modification Part | Airbus Helicopters... EC135P3, EC135T3 | 2026-03-10 | current |
| Aircorps Aviation, LLC | LH Outer Stiffener FKXC239320422 | FKXC239320422 | Dassault Aviation FALCON 7X | 2025-08-11 | current |
| Aircorps Aviation, LLC | RH Outer Stiffener FKXC239320425 | FKXC239320425 | Dassault Aviation FALCON 7X | 2025-08-11 | current |
| Aircorps Aviation, LLC | LH Inner Stiffener FKXC239320423 | FKXC239320423 | Dassault Aviation FALCON 7X | 2025-08-11 | current |
| Aircorps Aviation, LLC | RH Inner Stiffener FKXC239320424 | FKXC239320424 | Dassault Aviation FALCON 7X | 2025-08-11 | current |
| Aar Component Services - Hot Springs, LLC | Stiffener A-411U1234-3 | 411U1234--3 | The Boeing Company 747-200 Series | 2025-05-21 | current |
| Wipaire INC | Stiffener, Cover, Battery Box 1012780 | Modification Article | Air Tractor AT-602, AT-802, AT-802A | 2024-10-30 | current |
| Airbus Helicopters, INC. | Stiffener 160U03-0001-24 | Modification Part | Airbus Helicopters H160-B | 2024-10-09 | current |
| Aar Component Services - Hot Springs, LLC | Stiffener A-411T1218-2 | 411T1218-6 | The Boeing Company 767-200 Series, 767-300 Series,... | 2024-04-23 | current |
| Amsafe Bridport | STIFFENER FRONT 416T2189-61 | 416T2189-61 | BOEING 767-200 SERIES, 767-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416U6037-38 | 416U6037-38 | BOEING 747-400 SERIES, 747-400D SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-30 | 65B52726-30 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-83 | 65B52726-83 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416U6037-20 | 416U6037-20 | BOEING 747-200B SERIES, 747-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416U6037-5 | 416U6037-5 | BOEING 747-200B SERIES, 747-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-135 | 65B52726-135 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-85 | 65B52726-85 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER ASSY 416T2189-65 | 416T2189-65 | BOEING 767-200 SERIES, 767-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416U6037-19 | 416U6037-19 | BOEING 747-200B SERIES, 747-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER- 416U6044-1 | 416U6044-1 | BOEING 747-400 SERIES, 747-400D SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-74 | 65B52726-74 | BOEING 747-100 SERIES, 747-200B SERIES, 747SR SERIES | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416U6037-6 | 416U6037-6 | BOEING 747-200B SERIES, 747-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-84 | 65B52726-84 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416U6037-28 | 416U6037-28 | BOEING 747-200B SERIES, 747-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416T2189-62 | 416T2189-62 | BOEING 767-200 SERIES, 767-300 SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-105 | 65B52726-105 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-36 | 65B52726-36 | BOEING 747-100 SERIES, 747-200B SERIES | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416T2189-87 | 416T2189-87 | BOEING 767-300 SERIES | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER- 416U6044-2 | 416U6044-2 | BOEING 747-400 SERIES, 747-400D SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-137 | 65B52726-137 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-39 | 65B52726-39 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 65B52726-82 | 65B52726-82 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 69B55908-1 | 69B55908-1 | BOEING 747-100 SERIES, 747-200B SERIES,... | 2022-09-27 | current |
| Amsafe Bridport | STIFFENER 416U6037-24 | 416U6037-24 | BOEING 747-200B SERIES, 747-300 SERIES,... | 2022-09-27 | current |
| Airborne Maintenance & Engineering Services | STIFFENER, MWS 3 & 4 A19-97-031-05 | A19-97-031-05 | Airbus A319-133, A321-200 Series | 2022-08-25 | current |
| Airforms LLC | LH FWD STIFFENER AF99225-00 | 99225-00 | Piper Aircraft PA-28-140 | 2022-07-26 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-00116-23 | 007-00116-23 | Boeing 737-300/400/700 | 2022-07-11 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-00116-25 | 007-00116-25 | Boeing 737-300/400/700 | 2022-07-11 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-00116-21 | 007-00116-21 | Boeing 737-300/400/700 | 2022-07-11 | current |
| Mag Aerospace | STIFFENER UPPER 2017015-016-103 | Modification Part | Textron Aviation Inc 208B | 2022-06-01 | current |
| Mag Aerospace | STIFFENER LEFT 2017015-016-101 | Modification Part | Textron Aviation Inc 208B | 2022-06-01 | current |
| Mag Aerospace | STIFFENER ASSY UPPER RIGHT 2017015-016-255 | Modification Part | Textron Aviation Inc 208B | 2022-06-01 | current |
| Mag Aerospace | STIFFENER UPPER RIGHT 2017015-016-205 | Modification Part | Textron Aviation Inc 208B | 2022-06-01 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-10001-21 | 007-10001-21 | Boeing 737-300 | 2022-05-12 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-10001-3 | 007-10001-3 | Boeing 737-300 | 2022-05-12 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-10001-17 | 007-10001-17 | Boeing 737-300 | 2022-05-12 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-06002-71 | 007-06002-71 | Boeing 737-300/400 | 2022-05-12 | current |
| Airborne Maintenance & Engineering Services | Stiffener 007-04522-3 | 007-04522-3 | Boeing 737-700 | 2022-04-25 | current |
| Aviation Technical Services | STIFFENER 69-50746U27 | 69-50746U27 | The Boeing company 767-200 Series, 767-300 Series,... | 2021-12-10 | current |
| Aviation Technical Services | Stiffener - Rear Spar, Wing Center Section 111A1308U16ATSMRO | 111A1308U16 | Boeing 737-600 Series, 737-700 Series,... | 2021-06-25 | current |
| Airborne Maintenance & Engineering Services | STIFFENER, MWS 3 & 4 A19-97-031-05 | A19-97-031-05 | Airbus A319-100, A321-200 | 2021-03-03 | current |
| R & D Dynamics Corporation | Stiffener - Thrust BRG RD204869-1 | 204869-1 | Airbus A300 A300, Model B2-1A. A300, Model... | 2020-12-01 | current |
| Rsg Products INC | Stiffener 04BL224200009-01 | 04BL224200009-01 | Bell 412EP | 2020-10-07 | current |
| Soundair Aviation Services | Stiffener SP5610-X1-1510N | 141A4811-3 | Boeing 727-200 Series, 737-700 Series,... | 2020-04-29 | current |
| Soundair Aviation Services | Stiffener SP5610-X1-1410N | 141A4811-4 | Boeing 727-200 Series, 737-600 Series,... | 2020-04-29 | current |
| Duncan Aviation INC | Stiffener SWP-046367 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-06-18 | current |
| Duncan Aviation INC | Stiffener SWP-045415 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | FWD Stiffener SWP-045890 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | Stiffener SWP-045369 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | Stiffener SWP-045349 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | Stiffener SWP-045406 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | Stiffener SWP-045284 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | Stiffener SWP-045473 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | Stiffener SWP-045350 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | Stiffener SWP-045477 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Duncan Aviation INC | AFT Stiffener SWP-045892 | Modification Part | Textron Aviation, Inc. 560XL (S/N 560-6001 and on) | 2019-05-09 | current |
| Aeronautical Engineers INC | Stiffener VA-RCB-3389-1 | Modification | Boeing B737-800 SERIES when the following... | 2019-02-13 | current |
| Aeronautical Engineers INC | Stiffener VA-RCB-3389-2 | Modification | Boeing B737-800 SERIES when the following... | 2019-02-13 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Stiffener - Skid Instl - Tail Boom 214-020-216-116 | 214-020-216-116 | Bell 214ST | 2018-10-15 | current |
| Aviation Technical Services | Stiffener 111A1308U15ATSMRO | 111A1308U15 | The Boeing Company 737-600 Series, 737-700 Series,... | 2018-08-02 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Stiffener 214-020-216-115 | 214-020-216-115 | BELL 214ST) (214ST | 2018-07-10 | current |
| Srs Aviation LLC | Stiffener 45-135031-65SRS | 45-135031-65 | Beechcraft 36, A36, G36 | 2017-08-27 | current |
| Srs Aviation LLC | Stiffener 45-135031-67SRS | 45-135031-67 | Beechcraft 36, A36, G36 | 2017-08-27 | current |
| Aviation Technical Services (Ats) | STIFFENER 721546-128-301 | Modification part | Airbus A319-112 | 2017-03-27 | current |
| Blr Aerospace LLC | LH Stiffener 205-D-1002-1 | Modification Part | Tamarack Helicopters, Inc. UH-1F, With STC SR00929SE Installed... | 2016-12-07 | current |
| Blr Aerospace LLC | RH Stiffener 205-D-1002-2 | Modification Part | Tamarack Helicopters, Inc. UH-1F, With STC SR00929SE Installed... | 2016-12-07 | current |
| Duncan Aviation INC | Stiffener SWP-0000032262 | Modification Part | Cessna Aircraft Company 525C | 2016-09-27 | current |
| Duncan Aviation INC | Stiffener SWP-0000032398 | Modification Part | Cessna Aircraft Company 525C | 2016-09-27 | current |
| Duncan Aviation INC | Stiffener SWP-0000032397 | Modification Part | Cessna Aircraft Company 525C | 2016-09-27 | current |
| Duncan Aviation INC | Stiffener SWP-0000032263 | Modification Part | Cessna Aircraft Company 525C | 2016-09-27 | current |
| Fliegen Works INC | Aft Stiffener 35A-59035-19 | 35A-59035-19 | Cessna 170A, 170B, 172 | 2016-09-27 | current |
| Magee Plastics Company | Stiffener Assembly 121-11629-7 | 411N1121-103 | Boeing 737-300 Series, 737-400 Series,... | 2016-06-30 | current |
| Magee Plastics Company | Stiffener Assembly 121-11629-11 | 411N1121-105 | Boeing 737-300 Series, 737-400 Series,... | 2016-06-30 | current |
| Magee Plastics Company | Stiffener Assembly 121-11629-9 | 411N1121-115 | Boeing 737-300 Series, 737-400 Series,... | 2016-06-30 | current |
| Magee Plastics Company | Stiffener Assembly 121-11629-1 | 411N1121-15 411N1121-101 | Boeing 737-300 Series, 737-400 Series,... | 2016-06-30 | current |
| Magee Plastics Company | Stiffener Assembly 121-11629-2 | 411N1121-13 411N1121-106 | Boeing 737-300 Series, 737-400 Series,... | 2016-06-30 | current |
| Magee Plastics Company | Stiffener Assembly 121-11629-12 | 411N1121-107 | Boeing 737-300 Series, 737-400 Series,... | 2016-06-30 | current |
| Magee Plastics Company | Stiffener Assembly 121-11629-3 | 411N1121-18 411N1121-109 | Boeing 737-300 Series, 737-400 Series,... | 2016-06-30 | current |
| Rockwell Collins INC | Stiffener 655-5148-006 | 655-5148-006 | Boeing 747-400 Series | 2016-06-01 | current |
| Rockwell Collins INC | Stiffener 655-5148-007 | 655-5148-007 | Boeing 737-600 Series | 2016-06-01 | current |
| Rockwell Collins INC | Stiffener 655-5148-004 | 655-5148-004 | Boeing 737-600 Series | 2016-06-01 | current |
| Rockwell Collins INC | STIFFENER 655-5148-005 | 655-5148-005 | Boeing 737-300, 400 | 2016-06-01 | current |
| Rockwell Collins INC | STIFFENER 655-5148-007 | 655-5148-007 | Boeing 737-300, 400, 757-200 | 2016-06-01 | current |
| Cascade Aviation Services INC | Stiffener 706-12546-7 | 706-12546-7 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 07CAS343503-1 | Modification Part | Bombardier DHC-8-400 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12301-23 | 706-12301-23 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12301-21 | 706-12301-21 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12546-24 | 706-12546-24 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12717-2 | 706-12717-2 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12431-24 | 706-12431-24 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12431-7 | 706-12431-7 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12431-21 | 706-12431-21 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener G80193007-73 | G80193007-73 | Boeing 737-700 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 07CAS343503-3 | Modification Part | Bombardier DHC-8-400 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12431-37 | 706-12431-37 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12431-22 | 706-12431-22 | Boeing 757-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 01CAS029501-161 | Modification Part | Bombardier DHC-8-200 | 2016-05-25 | current |
| Cascade Aviation Services INC | Stiffener 706-12431-23 | 706-12431-23 | Boeing 757-200 | 2016-05-25 | current |
| Adaptive Aerospace CORP | Stiffener 747POC326-031 | 747POC326-031 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener 747POC326-007 | 747POC326-007 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener, LBL 24.75 747POC326-001 | 747POC326-001 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener, LBL 45.50 747POC326-003 | 747POC326-003 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener 747POC326-011 | 747POC326-011 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener 747POC326-009 | 747POC326-009 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener 747POC326-013 | 747POC326-013 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener 747POC326-015 | 747POC326-015 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener, BL 29 747POC326-005 | 747POC326-005 | Boeing 747-100, -200C series | 2015-09-17 | current |
| Adaptive Aerospace CORP | Stiffener 747POC324-001 | 747POC324-001 | Boeing 747-100, -200C Series | 2015-09-08 | current |
| Adaptive Aerospace CORP | Stiffener 747POC324-003 | 747POC324-003 | Boeing 747-100, -200C Series | 2015-09-08 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Stiffener 214-030-504-31 | 214-030-504-31 | Bell 214B | 2015-09-01 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Stiffener 214-030-504-32 | 214-030-504-32 | Bell 214B | 2015-09-01 | current |
| Spirit Aerosystems INC | Stiffener 141A4834-3 | 141A4834-3 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2015-08-23 | current |
| Spirit Aerosystems INC | Stiffener 141A4834-4 | 141A4834-4 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2015-08-23 | current |
| Airborne Maintenance & Engineering Services | Stiffener, MWS 3 & 4 A19-97-031-05 | Modification Part | Airbus A319-133 | 2015-07-28 | current |
| Spirit Aerosystems INC | STIFFENER 116A6102-7 | 116A6102-7 | Boeing 737-700 SERIES, 737-800 SERIES | 2015-07-22 | current |
| Spirit Aerosystems INC | Stiffener, Tee 65-47952-70 | 65-47952-70 | Boeing 737-200 Series, 737-200C Series,... | 2015-07-21 | current |
| Spirit Aerosystems INC | STIFFENER 116A6102Y6 | 116A6102Y6 | The Boeing Company 737-600 Series, 737-700 Series,... | 2015-07-21 | current |
| Spirit Aerosystems INC | STIFFENER 116A6102Y5 | 116A6102Y5 | The Boeing Company 737-600 Series, 737-700 Series,... | 2015-07-21 | current |
| Spirit Aerosystems INC | STIFFENER 116A3412U4 | 116A3412U4 | The Boeing Company 737-600 Series, 737-700 Series,... | 2015-07-21 | current |
| Spirit Aerosystems INC | Stiffener 65B25633-119 | 65B25633-119 | Boeing 747-400 Series, 747-200D Series | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B15069-697 | 65B15069-697 | Boeing Series, 747-400 Series, 747-400D Series | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B15696-126 | 65B15696-126 | Boeing 747-200B Series, 747-200C Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B24601-55 | 65B24601-55 | Boeing 747-200B Series, 747-200C Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B12246-100 | 65B12246-100 | Boeing 747-100 Series, 747-100B Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B15454-16 | 65B15454-16 | Boeing 747-200B Series, 747-200C Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B12246-197 | 65B12246-197 | Boeing Series, 747-400 Series, 747-400D Series | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B15696-88 | 65B15696-88 | Boeing 747-200B Series, 747-300 Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B12246-226 | 65B12246-226 | Boeing Series, 747-400 Series, 747-400D Series | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B15454-15 | 65B15454-15 | Boeing 747-200B Series, 747-200C Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B24601-54 | 65B24601-54 | Boeing 747-200B Series, 747-200C Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B15696-125 | 65B15696-125 | Boeing 747-200B Series, 747-200C Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 65B12246-227 | 65B12246-227 | Boeing Series, 747-400 Series, 747-400D Series | 2015-07-16 | current |
| Spirit Aerosystems INC | Stiffener 116A6102-5 | 116A6102-5 | Boeing 737-600 Series, 737-700 Series,... | 2015-07-15 | current |
| Spirit Aerosystems INC | Stiffener 116A6102-6 | 116A6102-6 | Boeing 737-600 Series, 737-700 Series,... | 2015-07-15 | current |
| Spirit Aerosystems INC | Stiffener 116A3412-3 | 116A3412-3 | Boeing 737-600 Series, 737-700 Series,... | 2015-07-15 | current |
| Spirit Aerosystems INC | Stiffener 116A3412-4 | 116A3412-4 | Boeing 737-600 Series, 737-700 Series,... | 2015-07-15 | current |
| Spirit Aerosystems INC | Stiffener 116A3412-2 | 116A3412-2 | Boeing 737-600 Series, 737-700 Series,... | 2015-07-15 | current |
| Spirit Aerosystems INC | Stiffener 116A3412-1 | 116A3412-1 | Boeing 737-600 Series, 737-700 Series,... | 2015-07-15 | current |
The first 150 of 400.
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.