AD 2004-05-03
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes |
| aircraft | The Boeing Company | MD-88 | Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes |
| aircraft | The Boeing Company | MD-90-30 | Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes |
Unsafe Condition
Failure of the shock strut cylinders of the main landing gears (MLGs) due to cracking, which could result in collapse of the MLGs and consequent reduced controllability during landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct repetitive inspections to detect cracking of the shock strut cylinders of the left and right main landing gears. Replace any cracked shock strut cylinder with a serviceable part.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), MD-88, and MD-90-30 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Shock strut cylinders
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - 040503.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2004-05-03 Document Type: AD Final Rules Docket Number: 2003-NM-122-AD Subject Heading: Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83)...Show more Subject: Shock strut cylinders Status: Current Citation: (Federal Register: February 27, 2004 (Volume 0, Number 0)) Citation Publish Date: 02/27/2004 Effective Date: 03/15/2004 Make: The Boeing Company Model: DC-9-81 (MD-81) | DC-9-82 (MD-82) | DC-9-83 (MD-83) | DC-9-87 (MD-87) | MD-88 | MD-90-30 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 7 1 [Federal Register: February 27, 2004 (Volume 0, Number 0)] [Page 9203-9205] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr27fe04-5] ––––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 2003-NM-122-AD; Amendment 39-13497; AD 2004-05-03] RIN 2120-AA64 Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC- 9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes AGENCY: Federal Aviation Administration, DOT. ACTION: Final rule; request for comments. ––––––––––––––––––––––––––––––––––– SUMMARY: This amendment adopts a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes; Model MD-88 airplanes, and Model MD-90-30 airplanes. This action requires repetitive inspections to detect cracking of the shock strut cylinders of the left and right main landing gears (MLG), and replacement of any cracked shock strut cylinder. This action is necessary to prevent failure of the shock strut cylinders of the MLGs due to cracking, which could result in collapse of the MLGs and consequent reduced controllability during landing. This action is intended to address the identified unsafe condition. DATES: Effective March 15, 2004. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of March 15, 2004. Comments for inclusion in the Rules Docket must be received on or before April 27, 2004. ADDRESSES: Submit comments in triplicate to the Federal Aviation Administration (FAA), Transport Airplane Directorate, ANM-114, Attention: Rules Docket No. 2003-NM-122-AD, 1601 Lind Avenue, SW., Renton, Washington 98055-4056. Comments may be inspected at this location between 9 a.m. and 3 p.m., Monday through Friday, except Federal holidays. Comments may be submitted via fax to (425) 227-1232. Comments may also be sent via the Internet using the following address: 9-anm-iarcomment@faa.gov. Comments sent via fax or the Internet must contain ''Docket No. 2003-NM-122-AD'' in the subject line and need not be submitted in triplicate. Comments sent via the Internet as attached electronic files must be formatted in Microsoft Word 97 or 2000 or ASCII text. 2 The service information referenced in this AD may be obtained from Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1-L5A (D800-0024). This information may be examined at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. FOR FURTHER INFORMATION CONTACT: Mike S. Lee, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5325; fax (562) 627-5210. SUPPLEMENTARY INFORMATION: Five operators of McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and Model MD-88 airplanes reported instances of a shock strut cylinder of a main landing gear (MLG) fracturing, resulting in the MLG collapse during landing roll out. The airplanes had a shock strut cylinder of the MLG that fractured after accumulating between a total of 6,386 and 28,100 landings. The fractures began at cracks on the outer surface of the cylinders. The cracks were created by high stresses from vibration that can occur during airplane braking. Failure of the shock strut cylinders of the MLGs due to cracking could lead to collapse of the MLGs and consequent reduced controllability of the airplane during landing. Similar Condition Exists on Other Models The shock strut cylinders on certain McDonnell Douglas Model MD-90-30 airplanes are identical to those on the affected Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes; and Model MD-88 airplanes. Therefore, those Model MD-90-30 airplanes may be subject to the unsafe condition due to exchanging a shock strut cylinder of a MLG from an affected airplane. Related Rulemaking AD 99-06-13, amendment 39-11077 (64 FR 13330, March 18, 1999), applicable to certain McDonnell Douglas Model DC-9-80 series airplanes; and Model MD-88 airplanes, requires repetitive inspections to detect fatigue cracking of the shock strut cylinder of the MLG and replacement of any cracked shock strut cylinder with a serviceable part. That AD references McDonnell Douglas Alert Service Bulletin MD80-32A286, Revision 03, dated May 28, 1998, as the applicable source of service information. AD 96-01-09, amendment 39-9485 (61 FR 2407, January 26, 1996), applicable to certain McDonnell Douglas Model DC-9-80 series airplanes and Model MD-88 airplanes, requires installation of hydraulic brake line restrictors on the MLG, and modification of the hydraulic damper assembly of the MLG. That AD references McDonnell Douglas Service Bulletins MD80-32-276, dated March 31, 1995, and Revision 1, dated October 17, 1995; and MD80-32-278, dated March 31, 1995, and Revision 1, dated September 6, 1995; as the applicable sources of service information. Explanation of Relevant Service Information The FAA has reviewed and approved Boeing Alert Service Bulletin MD80-32A344, Revision 2, dated January 28, 2004, for McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC- 9-83 (MD-83), DC-9-87 (MD-87) airplanes; and Model MD-88 airplanes; and Boeing Alert Service Bulletin MD90-32A059, dated January 28, 2004, for McDonnell Douglas Model MD-90-30
Document Text
Show stored source text (verify against official source)
AD Final Rules - 040503.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2004-05-03 Document Type: AD Final Rules Docket Number: 2003-NM-122-AD Subject Heading: Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83)...Show more Subject: Shock strut cylinders Status: Current Citation: (Federal Register: February 27, 2004 (Volume 0, Number 0)) Citation Publish Date: 02/27/2004 Effective Date: 03/15/2004 Make: The Boeing Company Model: DC-9-81 (MD-81) | DC-9-82 (MD-82) | DC-9-83 (MD-83) | DC-9-87 (MD-87) | MD-88 | MD-90-30 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 7 1 [Federal Register: February 27, 2004 (Volume 0, Number 0)] [Page 9203-9205] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr27fe04-5] ––––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 2003-NM-122-AD; Amendment 39-13497; AD 2004-05-03] RIN 2120-AA64 Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC- 9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes AGENCY: Federal Aviation Administration, DOT. ACTION: Final rule; request for comments. ––––––––––––––––––––––––––––––––––– SUMMARY: This amendment adopts a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes; Model MD-88 airplanes, and Model MD-90-30 airplanes. This action requires repetitive inspections to detect cracking of the shock strut cylinders of the left and right main landing gears (MLG), and replacement of any cracked shock strut cylinder. This action is necessary to prevent failure of the shock strut cylinders of the MLGs due to cracking, which could result in collapse of the MLGs and consequent reduced controllability during landing. This action is intended to address the identified unsafe condition. DATES: Effective March 15, 2004. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of March 15, 2004. Comments for inclusion in the Rules Docket must be received on or before April 27, 2004. ADDRESSES: Submit comments in triplicate to the Federal Aviation Administration (FAA), Transport Airplane Directorate, ANM-114, Attention: Rules Docket No. 2003-NM-122-AD, 1601 Lind Avenue, SW., Renton, Washington 98055-4056. Comments may be inspected at this location between 9 a.m. and 3 p.m., Monday through Friday, except Federal holidays. Comments may be submitted via fax to (425) 227-1232. Comments may also be sent via the Internet using the following address: 9-anm-iarcomment@faa.gov. Comments sent via fax or the Internet must contain ''Docket No. 2003-NM-122-AD'' in the subject line and need not be submitted in triplicate. Comments sent via the Internet as attached electronic files must be formatted in Microsoft Word 97 or 2000 or ASCII text. 2 The service information referenced in this AD may be obtained from Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1-L5A (D800-0024). This information may be examined at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. FOR FURTHER INFORMATION CONTACT: Mike S. Lee, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5325; fax (562) 627-5210. SUPPLEMENTARY INFORMATION: Five operators of McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and Model MD-88 airplanes reported instances of a shock strut cylinder of a main landing gear (MLG) fracturing, resulting in the MLG collapse during landing roll out. The airplanes had a shock strut cylinder of the MLG that fractured after accumulating between a total of 6,386 and 28,100 landings. The fractures began at cracks on the outer surface of the cylinders. The cracks were created by high stresses from vibration that can occur during airplane braking. Failure of the shock strut cylinders of the MLGs due to cracking could lead to collapse of the MLGs and consequent reduced controllability of the airplane during landing. Similar Condition Exists on Other Models The shock strut cylinders on certain McDonnell Douglas Model MD-90-30 airplanes are identical to those on the affected Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes; and Model MD-88 airplanes. Therefore, those Model MD-90-30 airplanes may be subject to the unsafe condition due to exchanging a shock strut cylinder of a MLG from an affected airplane. Related Rulemaking AD 99-06-13, amendment 39-11077 (64 FR 13330, March 18, 1999), applicable to certain McDonnell Douglas Model DC-9-80 series airplanes; and Model MD-88 airplanes, requires repetitive inspections to detect fatigue cracking of the shock strut cylinder of the MLG and replacement of any cracked shock strut cylinder with a serviceable part. That AD references McDonnell Douglas Alert Service Bulletin MD80-32A286, Revision 03, dated May 28, 1998, as the applicable source of service information. AD 96-01-09, amendment 39-9485 (61 FR 2407, January 26, 1996), applicable to certain McDonnell Douglas Model DC-9-80 series airplanes and Model MD-88 airplanes, requires installation of hydraulic brake line restrictors on the MLG, and modification of the hydraulic damper assembly of the MLG. That AD references McDonnell Douglas Service Bulletins MD80-32-276, dated March 31, 1995, and Revision 1, dated October 17, 1995; and MD80-32-278, dated March 31, 1995, and Revision 1, dated September 6, 1995; as the applicable sources of service information. Explanation of Relevant Service Information The FAA has reviewed and approved Boeing Alert Service Bulletin MD80-32A344, Revision 2, dated January 28, 2004, for McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC- 9-83 (MD-83), DC-9-87 (MD-87) airplanes; and Model MD-88 airplanes; and Boeing Alert Service Bulletin MD90-32A059, dated January 28, 2004, for McDonnell Douglas Model MD-90-30
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Retrieved: Apr 8, 2026
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