The Aviation DataBase®
Complete Aviation Regulatory Library
Sept. 11 Sept. 11 America 250
DataBases updated: Jul 9th, 2026
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Service Bulletins
NameRevisionLangSubjectDate
1 en Bearing Cup & Bearing Cone Change12/21/1990
en Bearing Cup and Bearing Cone Change Modifying Nose Wheel Assembly 9544207 or 9544207-3 to 9544207-61/4/1991
1 en Bearing Cup and Bearing Cone Change Modifying Nose Wheel Assembly 9544207 or 9544207-3 to 9544207-69/30/1991
en Landing Gear - Brake Assembly - Replacement of Asbestos Piston Insulatiors with Non-Asbestos Piston Insulators5/28/1996
en Bearing Cup and Bearing Cone Change Modifying Nose Wheel Assembly 9544207 or 9544207-3 to 9544207-61/4/1991
1 en Bearing Cup and Bearing Cone Change Modifying Nose Wheel Assembly 9544207 or 9544207-3 to 9544207-69/30/1991
en Landing Gear - Brake Assembly - Replacement of Asbestos Piston Insulatiors with Non-Asbestos Piston Insulators5/28/1996
en Main Wheel Mating Surface Cracks12/24/1992
en Main Wheel Bolt Boss Cracks3/10/1993
en Landing Gear - Brake Assembly - Replacement of Aluminum Brake Pistons1/13/1995
en Landing Gear - Brake Assembly - Inspection of Brake Assembly 5003096-73/5/1998
en Replacement of Brake Nuts and Introduction of Brake Assembly 5011640-17/15/1992
en Replacement of Brake Nuts and Introduction of Brake Assembly 5007396-28/1/1992
en Bearing Cup and Bearing Cone Change4/18/1990
en Landing Gear - Brake Assembly4/10/2002
en Landing Gear - Brake Assembly5/15/2002
Service Letters
NameRevisionLangSubjectDate
en Loose Screws on Disk Drive Keys6/17/1993
en Loose Screws on Disk Drive Keys6/17/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Rotating Disk 5007424 Delivered between June 1989 and February 1991 and Used in Brake Assembly 50073963/4/1991
en Wheel Bearing Change from Skf Tyson to Timken Duo Face-Plus Seal Bearing Parts5/4/1990
1 en Wheel Inspection & Overhaul Schedules12/10/1993
2 en Wheel Inspection & Overhaul Schedules1/17/1994
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Use of Parts Not Authorized in Nose Wheel Assemblies 9550267-6 and 9550267-72/10/1993
en Rotating Disk 5007424 Delivered between June 1989 and February 1991 and Used in Brake Assembly 5007396 3/4/1991
en Rotating Disk 5007424 Delivered between June 1989 and February 1991 and Used in Brake Assembly 5007396 3/4/1991
Temporary Revisions
NameRevisionLangSubjectDate
en Changes Hub Cap Supplier & Revises Hub Cap Installation Procedure2/20/1991
en Adds Heat Shield Subassembly 5004548 to Parts List as Preferred Part & Makes Heat Shield Subassembly 5002185 an Alternate Part12/9/1991