The U.S. aircraft register, updated daily
Parts · Engine

Boss

9 failure reports named the boss in the last ten years, 56 since 1997, most often on the Airbus A321; the condition most often found was "low pressure". 35 FAA approvals let 14 companies make a replacement boss, Goodrich Landing Gear holding the most (12).

Reports by year

024681997200220082015202332025
Reports by year, as a table
reports
19971
19985
19994
20008
20014
20025
20032
20044
20062
20073
20081
20092
20101
20123
20141
20151
20161
20181
20192
20211
20231
20253

Which system the reports file it under last ten years

Engine4Airframe structure4Cabin, seats and restraints1
Reports by system, as a table
reports
Engine4
Airframe structure4
Cabin, seats and restraints1

Models most often reporting it last ten years

Airbus A3213Airbus A3201Boeing 7371Boeing 7671Bombardier CL-600 Challenger and CRJ1Cessna 680 Citation Sovereign and Latitude1Diamond Aircraft DA 40 Diamond Star1
Models most reported, as a table
reports
Airbus A3213
Airbus A3201
Boeing 7371
Boeing 7671
Bombardier CL-600 Challenger and CRJ1
Cessna 680 Citation Sovereign and Latitude1
Diamond Aircraft DA 40 Diamond Star1

How it failed the condition found, last ten years

low pressure4cracked1detached1failed1faulty1loose1
Conditions found, as a table
reports
low pressure4
cracked1
detached1
failed1
faulty1
loose1

Engines most often reporting it

CFM International CFM56-7B27E 1General Electric CF34-3B1 1Lycoming IO-360-M1A 1Pratt & Whitney Canada PW306D1 1

Approved replacement parts 35 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a boss and sell it as an approved part for the models named. These are the companies holding such approvals for a boss:

Goodrich Landing Gear 12B H Aircraft Company INC 4Northwest Aerospace Technologies 3Helicopter Support INC Services Division 3Ontic Engineering & Manufacturing INC 2Jet Avion Corporation A Heico Aerospace Company 2Honeywell International INC. 2Triumph Composite Systems INC 1Skycraft INC 1Pye & Hogan Machine CO 1Mcclain International INC, A Heico Aerospace Company 1Gemini Engineering INC 1Gemini Engineering 1Aircraft Component Design LLC 1

For these models most: Boeing 747 (12), Boeing 757 (4), Mcdonnell Douglas MD-10 (2), Boeing 767 (2), Airbus A321 (2), Airbus A320 (2), Airbus A319 (2).

MakerPartReplacesFitsGrantedStatus
Jet Avion Corporation A Heico Aerospace CompanyBoss, LPC Borescope 5W2202JA5W2202International Aero... V2522-A5, V2524-A5, V2527-A52022-03-15current
Honeywell International INC.Boss L8603150-3Modification partAirbus A318 Series, A319 Series, A320 Series2021-11-02current
Honeywell International INC.Boss L8603150-5Modification partAirbus A318 Series, A319 Series, A320 Series2021-11-02current
Jet Avion Corporation A Heico Aerospace CompanyBoss M3A0478International Aero Engines P/N 3A0478International Aero Engines AG IAE) (V2500-A1) (IAE) c/o IAE...2020-09-23current
Mcclain International INC, A Heico Aerospace CompanyBoss M3A0478International Aero Engines P/N 3A0478International Aero Engines AG IAE) (V2500-A1) (IAE) c/o IAE...2019-09-18current
Ontic Engineering & Manufacturing INCBoss, Fuel And Oil 3601722-13601722-1Honeywell 700-4B (DC-10, MD-10), 700-4E (MD-11)2013-11-14current
Ontic Engineering & Manufacturing INCBoss, Support, Bearing Carrier 3600276-13600276-1Honeywell 700-4B (DC-10, MD-10), 700-4E (MD-11)2013-11-14current
Helicopter Support INC Services DivisionBOSS 37B280013P10137B280013P101General Electric Company 1E3) (CT58-140-1, -140-22013-04-03current
Aircraft Component Design LLCBoss, Locating 37B280013P101ACD37B280013P101General Electric CT58-140-1, CT58-140-22012-10-25current
Helicopter Support INC Services DivisionBOSS, COMBUSTION LINER 3010T96P013010T96P01General Electric Company CT58-140-1, -140-2, -110.2011-10-13current
Helicopter Support INC Services DivisionBOSS, COMBUSTION LINER A3010T96P013010T96P01General Electric Company CT58-140-1, -140-2, -110.2010-07-19current
Gemini EngineeringBOSS ASSY 413T1036-41413T1036-41Boeing 767-200 Series, 767-300 Series2009-11-15current
Gemini Engineering INCBOSS ASSY 413T1036-41413T1036-41Boeing 767-200 Series, 767-300 Series2009-11-15current
Goodrich Landing GearBOSS- 69B70796-169B70796-1Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS 69B71105-469B71105-4Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS 69B71105-369B71105-3Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS- 69B70796-469B70796-4Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS- 69B70796-569B70796-5Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS 69B70732-269B70732-2Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS- 69B70796-169B70796-1Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS- 69B70796-469B70796-4Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS- 69B70796-569B70796-5Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS 69B70732-269B70732-2Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS 69B71105-469B71105-4Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Goodrich Landing GearBOSS 69B71105-369B71105-3Boeing 747-100 SERIES, 747-100B SERIES,...2009-10-29current
Triumph Composite Systems INCBOSS 217N2094-10217N2094-10Boeing 757-200PF SERIES2005-11-25current
Northwest Aerospace TechnologiesBoss Assembly G80494010-35Modification PartBoeing 757-200 (Aircraft S/N s 29025, 29026, 290272004-11-16current
Northwest Aerospace TechnologiesBoss Assembly G80494010-31Modification PartBoeing 757-200 (Aircraft S/N s 29025, 29026, 290272004-11-16current
Northwest Aerospace TechnologiesBoss Assembly G80494010-33Modification PartBoeing 757-200 (Aircraft S/N s 29025, 29026, 290272004-11-16current
Skycraft INCBoss SK1520P&W 647923Pratt & Whitney JT9D-3A, -7, -7A1997-05-27current
B H Aircraft Company INCBoss K771554PWA 771554Pratt & Whitney JT8D-1, -1A, -71995-07-31current
B H Aircraft Company INCBoss K472454PWA 472454Pratt & Whitney JT8D-1, -1A, -71995-07-31current
B H Aircraft Company INCBoss K472468PWA 472468Pratt & Whitney JT8D-1, -1A, -71995-07-31current
B H Aircraft Company INCBoss K472456PWA 472456Pratt & Whitney JT8D-1, -1A, -71995-07-31current
Pye & Hogan Machine COBoss D647923-00P&W 647923-00 Dwg. 647923-00 dtd 6/18/73Pratt & Whitney JT9D-3, -7, -201993-09-15current

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.