Bulb Seal
3 failure reports named the bulb seal in the last ten years, 3 since 2025, most often on the Boeing 737; the condition most often found was "broken". 107 FAA approvals let 18 companies make a replacement bulb seal, Spirit Aerosystems INC holding the most (31).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 2025 | 1 |
| 2026 | 2 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Airframe structure | 3 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Boeing 737 | 2 |
| Boeing 767 | 1 |
How it failed the condition found, last ten years
broken1missing1torn1
Conditions found, as a table
| reports | |
|---|---|
| broken | 1 |
| missing | 1 |
| torn | 1 |
Approved replacement parts 107 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a bulb seal and sell it as an approved part for the models named. These are the companies holding such approvals for a bulb seal:
Spirit Aerosystems INC 31Gemini Engineering INC 13Kirkhill-Ta CO 12Gemini Engineering 12Safran Cabin INC. 7Quiet Wing Technologies INC 5International Aero Interiors 4Aviation Materials Management INC 4A & B Plastic INC 4Pexco Aerospace INC. 2Kirkhill Aircraft Parts CO. DBA Proponent 2Aviation Technical Services 2Aviation Materials Management, INC. 2Aviation Materials Management, INC 2Adpma LLC 2Triumph Composite Systems INC 1Trelleborg Sealing Solutions 1Anb Aviation Parts LLC 1
For these models most: Boeing 737 (56), Boeing 757 (19), Boeing 747 (13), Boeing 777 (4), Boeing 767 (4), Boeing 707 (4), Mcdonnell Douglas MD-11 (2), Boeing 787 Dreamliner (2), Fairchild SA227 (1), Fairchild SA226 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Pexco Aerospace INC. | BULB SEAL RETAINER BAC1522-204 | BAC1522-204 | The Boeing Company 737-8200 | 2026-06-17 | current |
| Aviation Technical Services | Bulb Seal – Wing INBD Fixed T/E 115A2795-2ATSMRO | 115A2795-2 | The Boeing Company 737-900 Series, 737-900ER Series, 737-9 | 2026-05-01 | current |
| Safran Cabin INC. | Bulb Seal 9581086-1 | 9581086-1 | De Havilland... DHC-8-400 Series | 2025-08-18 | current |
| Safran Cabin INC. | Bulb Seal 9581086-3 | 9581086-3 | De Havilland... DHC-8-400 Series | 2025-08-18 | current |
| Safran Cabin INC. | Bulb Seal 9581086-5 | 9581086-5 | De Havilland... DHC-8-400 Series | 2025-08-18 | current |
| Safran Cabin INC. | BULB SEAL 9581088-1 | 9581088-1 | DE HAVILLAND... DHC-8-400 SERIES | 2025-08-18 | current |
| Safran Cabin INC. | Bulb Seal 9581086-1 | 9581086-1 | De Havilland... DHC-8-400 Series | 2025-08-06 | current |
| Safran Cabin INC. | Bulb Seal 9581086-3 | 9581086-3 | De Havilland... DHC-8-400 Series | 2025-08-06 | current |
| Safran Cabin INC. | Bulb Seal 9581086-5 | 9581086-5 | De Havilland... DHC-8-400 Series | 2025-08-06 | current |
| Aviation Technical Services | Bulb Seal – Wing INBD Fixed T/E 115A2795-2ATSMRO | 115A2795-2 | The Boeing Company 737-700 Series, 737-800 Series, 737-8 | 2024-12-17 | current |
| Kirkhill Aircraft Parts CO. DBA Proponent | BULB SEAL BAC1521-728-1 | BAC1521-728-1 | Boeing 747-300 SERIES | 2020-09-24 | current |
| Kirkhill Aircraft Parts CO. DBA Proponent | BULB SEAL BAC1521-728-4 | BAC1521-728-4 | Boeing 747-300 SERIES, 757-200 SERIES,... | 2020-09-24 | current |
| Trelleborg Sealing Solutions | Bulb Seal BAC1522-65 | BAC1522-65 | The Boeing Company 787-8 | 2019-04-03 | current |
| Anb Aviation Parts LLC | Bulb Seal 27-22058-007ANB | 27-22058-007 | M7/Fairchild SA226, AT, TC | 2018-06-04 | current |
| Pexco Aerospace INC. | Bulb Seal Retainer BAC1522-204 | BAC1522-204 | The Boeing Company 757-200 Series, 757-200CB Series,... | 2016-03-09 | current |
| Spirit Aerosystems INC | BULB SEAL 113A9250-3 | 113A9250-3 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2016-01-18 | current |
| Kirkhill-Ta CO | BULB SEAL 5673-766 | 10-60754-766 | Boeing 737-300 SERIES, 737-400 SERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL 5673-763 | 10-60754-763 | Boeing 737-300 SERIES, 737-400 SERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL SF15-103-834 | 10-60754-834 | Boeing 757-200 SERIES, 757-200CB SERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL 800-1028 | 10-60754-1028 | Boeing 777-200 SERIES, 777-200LR SERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL S-13117-140 | 10-60754-140 | Boeing 747-100 SERIES, 747-200BSERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL SF15-103-140 | 10-60754-140 | Boeing 747-100 SERIES, 747-200BSERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL S-13117-832 | 10-60754-832 | Boeing 747-400 SERIES | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL S-13117-141 | 10-60754-141 | Boeing 747-100 SERIES, 747-200BSERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL 800-1027 | 10-60754-1027 | Boeing 777-200 SERIES, 777-200LR SERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL 800-1015 | 10-60754-1015 | Boeing 777-200 SERIES, 777-200LR SERIES,... | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL S-13117-766 | 10-60754-766 | Boeing 737-300 SERIES, 737-400SERIES, 737-500 SERIES | 2015-08-28 | current |
| Kirkhill-Ta CO | BULB SEAL SF15-103-141 | 10-60754-141 | Boeing 747-100 SERIES, 747-200BSERIES,... | 2015-08-28 | current |
| Spirit Aerosystems INC | Bulb Seal 654N0244-729 | 654N0244-729 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2015-08-16 | current |
| Spirit Aerosystems INC | Bulb Seal 654N0244-730 | 654N0244-730 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2015-08-16 | current |
| Spirit Aerosystems INC | AFT Bulb Seal 114N3013-39 | 114N3013-39 | Boeing 757-200 Series, 757-200CB Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Bulb Seal 114N4043-12 | 114N4043-12 | Boeing 757-200 Series, 757-200CB Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Bulb Seal 114N3044-36 | 114N3044-36 | Boeing 757-200 Series, 757-200PF Series,... | 2015-07-16 | current |
| Spirit Aerosystems INC | Bulb Seal 114N4043-11 | 114N4043-11 | Boeing 757-200 Series, 757-200CB Series,... | 2015-07-16 | current |
| Aviation Materials Management, INC | Bulb Seal 113A9250-6 | 113A9250-6 | Boeing 737-600 Series, 737-700 Series,... | 2015-02-12 | current |
| Aviation Materials Management, INC | Bulb Seal 113A9350-3 | 113A9350-3 | Boeing 737-600 Series, 737-700 Series,... | 2015-02-12 | current |
| Aviation Materials Management, INC. | Bulb Seal 113A9250-6 | 113A9250-6 | Boeing 737-600 Series, 737-700 Series,... | 2014-09-04 | current |
| Aviation Materials Management, INC. | Bulb Seal 113A9350-3 | 113A9350-3 | Boeing 737-600 Series, 737-700 Series,... | 2014-09-04 | current |
| Aviation Materials Management INC | Bulb Seal 113A9350-3 | 113A9350-3 | Boeing 737-600 Series, 737-700 Series,... | 2013-03-24 | current |
| Aviation Materials Management INC | Bulb Seal 113A9250-6 | 113A9250-6 | Boeing 737-600 Series, 737-700 Series,... | 2013-03-24 | current |
| Quiet Wing Technologies INC | Bulb Seal QWG-2700005-107 | QWG-2700005-107 | Boeing 737-400 Series | 2012-11-01 | current |
| Quiet Wing Technologies INC | Bulb Seal QWG-2700005-103 | QWG-2700005-103 | Boeing 737-400 Series | 2012-11-01 | current |
| Quiet Wing Technologies INC | Bulb Seal QWG-2700005-109 | QWG-2700005-109 | Boeing 737-400 Series | 2012-11-01 | current |
| Quiet Wing Technologies INC | Bulb Seal QWG-2700005-105 | QWG-2700005-105 | Boeing 737-400 Series | 2012-11-01 | current |
| Quiet Wing Technologies INC | Bulb Seal QWG-2700005-101 | QWG-2700005-101 | Boeing 737-400 Series | 2012-11-01 | current |
| Spirit Aerosystems INC | BULB SEAL 315A2584-24 | 315A2584-24 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2012-04-09 | current |
| Spirit Aerosystems INC | BULB SEAL 315A2584-24 | 315A2584-24 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2010-12-06 | current |
| Spirit Aerosystems INC | BULB SEAL 113A9250-3 | 113A9250-3 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2010-09-29 | current |
| Spirit Aerosystems INC | BULB SEAL - FWD LH D 411A2128-37A | 411A2128-37A | Boeing 737-600 SERIES, 737-700 SERIES,... | 2010-09-13 | current |
| Spirit Aerosystems INC | BULB SEAL 411N3110-341 | 411N3110-341 | Boeing 737-200 SERIES, 737-300 SERIES,... | 2010-09-13 | current |
| Aviation Materials Management INC | Bulb Seal 113A9350-3 | 113A9350-3 | Boeing 737-600 Series, 737-700 Series,... | 2010-08-08 | current |
| Aviation Materials Management INC | Bulb Seal 113A9250-6 | 113A9250-6 | Boeing 737-600 Series, 737-700 Series,... | 2010-08-08 | current |
| Spirit Aerosystems INC | BULB SEAL 315A2584-24 | 315A2584-24 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2010-03-30 | current |
| Spirit Aerosystems INC | BULB SEAL, TRACK FAIRING 315A2584-23 | 315A2584-23 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2010-03-30 | current |
| Spirit Aerosystems INC | BULB SEAL ASSY 181A8016-5 | 181A8016-5 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2010-03-25 | current |
| Spirit Aerosystems INC | BULB SEAL ASSY 181A8016-6 | 181A8016-6 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2010-03-25 | current |
| Gemini Engineering | BULB SEAL 113A9150-8 | 113A9150-8 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering | BULB SEAL 113A9250-5 | 113A9250-5 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering | BULB SEAL FWD LH D 411A2128-37A | 411A2128-37A | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering | BULB SEAL 113A9150-3 | 113A9150-3 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering | BULB SEAL 113A9250-3 | 113A9250-3 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9150-4 | 113A9150-4 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9310-6 | 113A9310-6 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9150-8 | 113A9150-8 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL AFT LH D 411A2128-48B | 411A2128-48B | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL FWD LH D 411A2128-37A | 411A2128-37A | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9250-4 | 113A9250-4 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9150-10 | 113A9150-10 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9150-3 | 113A9150-3 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9250-3 | 113A9250-3 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9250-8 | 113A9250-8 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 113A9250-5 | 113A9250-5 | Boeing 737-600 Series, 737-700 Series,... | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL 65-50821-844 | 65-50821-844 | Boeing 737-400 Series | 2009-11-15 | current |
| Gemini Engineering INC | BULB SEAL ASSY 65C26311-91 | 65C26311-91 | Boeing 737-300 Series, 737-400 Series,... | 2009-11-15 | current |
| Gemini Engineering | BULB SEAL 113A9150-12 | 113A9150-12 | Boeing 737-600 Series, 737-700 Series,... | 2009-06-03 | current |
| Gemini Engineering | BULB SEAL 114N3044-35 | 114N3044-35 | Boeing 757-200 Series, 757-200PF Series,... | 2009-06-03 | current |
| Gemini Engineering | BULB SEAL, TRACK FAIRING 315A2584-24 | 315A2584-24 | Boeing 737-600 Series, 737-700 Series,... | 2009-06-03 | current |
| Gemini Engineering | BULB SEAL, TRACK FAIRING 315A2584-19 | 315A2584-19 | Boeing 737-600 Series, 737-700 Series,... | 2009-06-03 | current |
| Gemini Engineering | BULB SEAL 115A3756-6 | 115A3756-6 | Boeing 737-600 Series, 737-700 Series,... | 2009-06-03 | current |
| Gemini Engineering | AFT BULB SEAL 114N3013-39 | 114N3013-39 | Boeing 757-200 Series, 757-200PF Series,... | 2009-06-03 | current |
| Gemini Engineering | BULB SEAL, TRACK FAIRING 315A2584-23 | 315A2584-23 | Boeing 737-600 Series, 737-700 Series,... | 2009-06-03 | current |
| Spirit Aerosystems INC | Bulb Seal 654N0244-730 | 654N0244-730 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2008-12-15 | current |
| Spirit Aerosystems INC | Bulb Seal 654N0244-729 | 654N0244-729 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2008-12-15 | current |
| Spirit Aerosystems INC | BULB SEAL 315A2584-24 | 315A2584-24 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2008-07-13 | current |
| Spirit Aerosystems INC | BULB SEAL 315A2584-24 | 315A2584-24 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2007-04-12 | current |
| Spirit Aerosystems INC | BULB SEAL 311U4530-37 | 311U4530-37 | Boeing 747-400 SERIES, 747-400F SERIES | 2007-03-05 | current |
| Spirit Aerosystems INC | BULB SEAL, TRACK FAIRING 315A2584-23 | 315A2584-23 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2007-03-02 | current |
| Spirit Aerosystems INC | BULB SEAL 65B89669-6 | 65B89669-6 | Boeing 747-100B SERIES, 747-200B SERIES,... | 2007-03-02 | current |
| Spirit Aerosystems INC | BULB SEAL 65B89669-5 | 65B89669-5 | Boeing 747-100B SERIES, 747-200B SERIES,... | 2007-03-02 | current |
| Spirit Aerosystems INC | BULB SEAL, TRACK FAIRING 315A2584-19 | 315A2584-19 | Boeing 737-600 SERIES, 737-700 SERIES,... | 2007-03-02 | current |
| Adpma LLC | Bulb Seal 114N3013-4 | 114N3013-4 | Boeing 757-200 Series, 757-200CB Series,... | 2007-02-27 | current |
| Adpma LLC | Bulb Seal 114N3013-3 | 114N3013-3 | Boeing 757-200 Series, 757-200CB Series,... | 2007-02-27 | current |
| Spirit Aerosystems INC | BULB SEAL 311U4530-37 | 311U4530-37 | Boeing 747-400 SERIES, 747-400F SERIES | 2006-02-28 | current |
| Spirit Aerosystems INC | BULB SEAL 65B89669-5 | 65B89669-5 | Boeing 747-100B SERIES, 747-200B SERIES,... | 2006-02-15 | current |
| Spirit Aerosystems INC | BULB SEAL 65B89669-6 | 65B89669-6 | Boeing 747-100B SERIES, 747-200B SERIES,... | 2006-01-31 | current |
| Spirit Aerosystems INC | Bulb Seal 114N4043-11 | 114N4043-11 | Boeing 757-200 Series, 757-200CB Series,... | 2006-01-09 | current |
| Spirit Aerosystems INC | Bulb Seal 114N4043-12 | 114N4043-12 | Boeing 757-200 Series, 757-200CB Series,... | 2006-01-09 | current |
| Spirit Aerosystems INC | AFT Bulb Seal 114N3013-39 | 114N3013-39 | Boeing 757-200 Series, 757-200CB Series,... | 2006-01-09 | current |
| International Aero Interiors | Bulb Seal AWE0695-3 | AWE0695-3 | McDonnell Douglas MD-11 S/N 48472-48480, 48565, 48566 | 2005-12-28 | current |
| International Aero Interiors | Bulb Seal AWE0461-3 | AWE0461-3 | McDonnell Douglas MD-11 S/N 48472-48480, 48565, 48566 | 2005-12-28 | current |
| International Aero Interiors | Bulb Seal 98-3009-520-101 | 98-3009-520-101 | Boeing 767-300ER | 2005-12-28 | current |
| International Aero Interiors | Bulb Seal 98-3009-520-103 | 98-3009-520-101 | Boeing 767-300ER | 2005-12-28 | current |
| Triumph Composite Systems INC | BULB SEAL 232T2049-16 | 232T2049-16 | Boeing 767-200 SERIES, 767-300 SERIES,... | 2005-11-25 | current |
| A & B Plastic INC | Bulb Seal 338 | The Boeing Co 1522-65 | Boeing 707-120, -320 | 1995-10-09 | current |
| A & B Plastic INC | Bulb Seal 383 | The Boeing Co 1522-58 | Boeing 707-120, -320 | 1995-10-09 | current |
| A & B Plastic INC | Bulb Seal 510 | The Boeing Co 1522-60 | Boeing 707-120, -320 | 1995-10-09 | current |
| A & B Plastic INC | Bulb Seal 696 | The Boeing Co 1522-66 | Boeing 707-120, -320 | 1995-10-09 | 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.