AD 91-10-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes |
| aircraft | The Boeing Company | MD-88 | Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes |
Unsafe Condition
Degradation of airplane flight handling qualities due to loose or missing bolts and nuts attaching the elevator variable load feel torque tube to the elevator variable load feel mechanism.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the four bolts attaching the elevator variable load feel torque tube to the mechanism for loose or missing bolts and nuts within 14 days after October 5, 1990, and every 60 days thereafter. Correct discrepancies before further flight. Replace three self-locking bolts/nuts and one non-locking bolt with castellated nut/bolts and a drilled head bolt within 6 months after June 18, 1991.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 14 days after October 5, 1990 (for initial inspection), every 60 days thereafter (for subsequent inspections), and within 6 months after June 18, 1991 (for modification).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas DC-9-80 (MD-80) series airplanes (DC-9-81, DC-9-82, DC-9-83, DC-9-87, MD-88) with serial numbers listed in McDonnell Douglas Service Bulletin A27-313 dated August 3, 1990.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Flight Controls - Elevator
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_91-10-11.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-10-11 Document Type: AD Final Rules Docket Number: 90-NM-288-AD Subject Heading: Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes Subject: Flight Controls - Elevator Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/18/1991 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 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 91-10-11 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-288-AD AMENDMENT: 39-6996 AD NUMBER: 91-10-11 SUBJECT HEADING: Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes ACTION: SUMMARY: DATES: Effective June 18, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-10-11 McDONNELL DOUGLAS: Amendment 39-6996. Docket No. 90-NM-288-AD. Supersedes AD 90-20-09. Applicability: Model DC-9-80 (MD-80) series airplanes and Model MD-88 airplanes, serial numbers as listed in McDonnell Douglas MD-80 Service Bulletin A27-313, dated August 3, 1990, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent degradation of airplane flight handling qualities, accomplish the following: A. Within 14 days after October 5, 1990 (the effective date of Amendment 39-6746, AD 90-20-09), and thereafter at intervals not to exceed 60 days, inspect the four bolts of the flight controls which attach the elevator variable load feel torque tube to the elevator variable load feel mechanism for loose or missing bolts and nuts, in accordance with Phase 1 of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A27-313, dated August 3, 1990. B. Any discrepancies found during the inspections required by paragraph A. of this AD must be corrected prior to further flight, in accordance with Phase 1 of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A27-313, dated August 3, 1990. C. Within 6 months after the effective date of this AD, modify the flight controls elevator variable load feel torque tube attachment to the elevator variable load feel mechanism by replacing the three self-locking bolts/nuts and one non-locking bolt with three castellated nut/bolts and one bolt with a drilled head for safety wire, in accordance with Phase 2 of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A27-313, dated August 3, 1990. Such installation constitutes terminating action for the repetitive inspections required by paragraph A. of this AD. D. An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Los Angeles ACO. E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Douglas Aircraft Company, P.O. Box 1771, Long Beach, California 90801, ATTN: Business Unit Manager, Technical Services, Mail Code 73-30. These documents may be examined at the FAA, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or the Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California. This amendment supersedes Amendment 39-6746, AD 90-20-09. This amendment (39-6996, AD 91-10-11) becomes effective on June 18, 1991. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_91-10-11.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-10-11 Document Type: AD Final Rules Docket Number: 90-NM-288-AD Subject Heading: Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes Subject: Flight Controls - Elevator Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/18/1991 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 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 91-10-11 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-NM-288-AD AMENDMENT: 39-6996 AD NUMBER: 91-10-11 SUBJECT HEADING: Airworthiness Directives; McDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and Model MD-88 Airplanes ACTION: SUMMARY: DATES: Effective June 18, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-10-11 McDONNELL DOUGLAS: Amendment 39-6996. Docket No. 90-NM-288-AD. Supersedes AD 90-20-09. Applicability: Model DC-9-80 (MD-80) series airplanes and Model MD-88 airplanes, serial numbers as listed in McDonnell Douglas MD-80 Service Bulletin A27-313, dated August 3, 1990, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent degradation of airplane flight handling qualities, accomplish the following: A. Within 14 days after October 5, 1990 (the effective date of Amendment 39-6746, AD 90-20-09), and thereafter at intervals not to exceed 60 days, inspect the four bolts of the flight controls which attach the elevator variable load feel torque tube to the elevator variable load feel mechanism for loose or missing bolts and nuts, in accordance with Phase 1 of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A27-313, dated August 3, 1990. B. Any discrepancies found during the inspections required by paragraph A. of this AD must be corrected prior to further flight, in accordance with Phase 1 of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A27-313, dated August 3, 1990. C. Within 6 months after the effective date of this AD, modify the flight controls elevator variable load feel torque tube attachment to the elevator variable load feel mechanism by replacing the three self-locking bolts/nuts and one non-locking bolt with three castellated nut/bolts and one bolt with a drilled head for safety wire, in accordance with Phase 2 of the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin A27-313, dated August 3, 1990. Such installation constitutes terminating action for the repetitive inspections required by paragraph A. of this AD. D. An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Los Angeles ACO. E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Douglas Aircraft Company, P.O. Box 1771, Long Beach, California 90801, ATTN: Business Unit Manager, Technical Services, Mail Code 73-30. These documents may be examined at the FAA, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or the Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California. This amendment supersedes Amendment 39-6746, AD 90-20-09. This amendment (39-6996, AD 91-10-11) becomes effective on June 18, 1991. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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