AD 85-22-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-15 | Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-40 | Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-40F | Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes |
Unsafe Condition
Loose engine mount bolts could result in loss of engine.
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Required Actions
Inspect engine-to-pylon forward and aft mounts for proper clamping and engine mount bolts per Alert Service Bulletin A71-133 within 30 days after the effective date. If a gap exceeds 0.002 inch, remove and replace bolts and nuts before further flight. Ensure bolts are torqued within limits and torque stripes painted, then conduct inspections every 90 days per Service Bulletin A73-133. Repetitive inspections may stop after modification per Service Bulletin 71-133, Revision 3.
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Compliance Time
within 30 days after the effective date of this AD
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Affected Aircraft
McDonnell Douglas Model DC-10-10, -15, -30, -40, and KC-10A (Military) series airplanes, Fuselage Numbers 1 through 388
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Federal Register Abstract
Engine Mount Bolts Inspection
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_85-22-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 85-22-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes Subject: Engine Mount Bolts Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/04/1985 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-15 | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 | DC-10-40F 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: 85-22-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5157 AD NUMBER: 85-22-01 SUBJECT HEADING: Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes ACTION: SUMMARY: DATES: Effective November 4, 1985. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 85-22-01 McDONNELL DOUGLAS: Amendment 39-5157. Applies to McDonnell Douglas Model DC-10-10, -15, -30, -40, and KC-10A (Military) series airplanes, Fuselage Numbers 1 through 388, certificated in any category. Compliance required as indicated, unless previously accomplished. To prevent loss of engine as a result of loose engine mount bolts, accomplish the following: A. Within 30 days after the effective date of this AD, inspect the engine-to-pylon forward and aft mount for proper clamping and inspect engine mount bolts in accordance with Accomplishment Instructions in McDonnell Douglas DC-10 Alert Service Bulletin A71-133, dated September 20, 1985, or later FAA-approved revision. For newly installed engines, the initial inspection may be 90 days from the date of installation or 30 days after the effective date of this AD whichever is later. B. If a gap greater than .002 inch is found, before further flight, remove and replace bolts and nuts in accordance with Accomplishment Instructions in McDonnell Douglas DC-10 Alert Service Bulletin A71-133, dated September 20, 1985, or later FAA-approved revision. C. For mounts with no gap larger than .002 inch or for mounts with bolts and nuts replaced in accordance with paragraph B., above, ensure that bolts are torqued within proper limits and that torque stripes are painted. Conduct an inspection for torque stripe alignment and take corrective action, as necessary, at intervals not to exceed 90 days, in accordance with Accomplishment Instructions of McDonnell Douglas DC-10 Alert Service Bulletin A73-133, dated September 20, 1985, or later FAA-approved revision. D. The repetitive inspections required by paragraph C., above, may be discontinued after the engine-to-pylon forward and aft mounts are modified in accordance with McDonnell Douglas DC-10 Service Bulletin 71-133, Revision 3, dated July 17, 1985, or later FAA-approved revision. E. Alternate means of compliance with this AD which provide an acceptable level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. F. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a base for accomplishment of inspections required by this AD. All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director, Publications and Training, C1-750 (54-60). These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California. This amendment becomes effective November 4, 1985. FOOTER:
Document Text
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AD Final Rules - DRS_85-22-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 85-22-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes Subject: Engine Mount Bolts Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/04/1985 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-15 | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 | DC-10-40F 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: 85-22-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5157 AD NUMBER: 85-22-01 SUBJECT HEADING: Airworthiness Directives; McDONNELL DOUGLAS DC-10-10, -15, -30, -40, and KC-10A (Military) Series Airplanes ACTION: SUMMARY: DATES: Effective November 4, 1985. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 85-22-01 McDONNELL DOUGLAS: Amendment 39-5157. Applies to McDonnell Douglas Model DC-10-10, -15, -30, -40, and KC-10A (Military) series airplanes, Fuselage Numbers 1 through 388, certificated in any category. Compliance required as indicated, unless previously accomplished. To prevent loss of engine as a result of loose engine mount bolts, accomplish the following: A. Within 30 days after the effective date of this AD, inspect the engine-to-pylon forward and aft mount for proper clamping and inspect engine mount bolts in accordance with Accomplishment Instructions in McDonnell Douglas DC-10 Alert Service Bulletin A71-133, dated September 20, 1985, or later FAA-approved revision. For newly installed engines, the initial inspection may be 90 days from the date of installation or 30 days after the effective date of this AD whichever is later. B. If a gap greater than .002 inch is found, before further flight, remove and replace bolts and nuts in accordance with Accomplishment Instructions in McDonnell Douglas DC-10 Alert Service Bulletin A71-133, dated September 20, 1985, or later FAA-approved revision. C. For mounts with no gap larger than .002 inch or for mounts with bolts and nuts replaced in accordance with paragraph B., above, ensure that bolts are torqued within proper limits and that torque stripes are painted. Conduct an inspection for torque stripe alignment and take corrective action, as necessary, at intervals not to exceed 90 days, in accordance with Accomplishment Instructions of McDonnell Douglas DC-10 Alert Service Bulletin A73-133, dated September 20, 1985, or later FAA-approved revision. D. The repetitive inspections required by paragraph C., above, may be discontinued after the engine-to-pylon forward and aft mounts are modified in accordance with McDonnell Douglas DC-10 Service Bulletin 71-133, Revision 3, dated July 17, 1985, or later FAA-approved revision. E. Alternate means of compliance with this AD which provide an acceptable level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. F. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a base for accomplishment of inspections required by this AD. All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director, Publications and Training, C1-750 (54-60). These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California. This amendment becomes effective November 4, 1985. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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