AD 78-04-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-32F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-32F (C-9A) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-32F (C-9B) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-33F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-34 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-34F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-41 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-51 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C |
Unsafe Condition
The aileron/spoiler mixer cam may disengage from the cam roller, which could result in loss of control of the aileron/spoiler system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 275 hours time in service after the effective date, inspect and re-shim if required as specified in McDonnell Douglas DC-9 Alert Service Bulletin A27-189. Within 2000 hours time in service after the effective date, add washers as specified in the same service bulletin or an equivalent modification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 275 hours time in service after the effective date of this AD for inspections and within the next 2000 hours time in service after the effective date for adding washers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Model DC-9 Series airplanes, including Military Type C-9A, C-9B, and VC-9C, with F/N's 1 through 862.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Aileron Spoiler Mixer Cam
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-04-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-04-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Subject: Aileron Spoiler Mixer Cam Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/21/1978 Make: The Boeing Company Model: DC-9-11 | DC-9-12 | DC-9-13 | DC-9-14 | DC-9-15 | DC-9-15F | DC-9-21 | DC-9-31 | DC-9-32 | DC-9-32 (...Show more 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: 78-04-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3141 AD NUMBER: 78-04-03 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C ACTION: SUMMARY: DATES: Effective February 21, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-04-03 MCDONNELL DOUGLAS: Amendment 39-3141. Applies to Model DC-9 Series airplanes, certificated in all categories, including Military Type C-9A, C-9B, and VC-9C, F/N's 1 through 862. Compliance required as indicated. To prevent the aileron/spoiler mixer cam from disengaging from the cam roller, accomplish the following: (a) Within the next 275 hours time in service after the effective date of this AD, unless already accomplished, inspect and re-shim if required as specified in Items 1 through 6 under Accomplishment Instructions in McDonnell Douglas DC-9 Alert Service Bulletin A27-189 dated October 7, 1977 or later FAA approved revision. (b) Within the next 2000 hours time in service after the effective date of this AD, unless already accomplished, add washers as specified in Item 7 under Accomplishment Instructions in McDonnell Douglas DC-9 Alert Service Bulletin A27-189 dated October 7, 1977 or later FAA approved revision, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region. (c) Special Flight permits may be issued in accordance with FAR's 21.197 and 21.199 to authorize operation of an airplane to a base for the accomplishment of the inspections and modifications required by this AD. This amendment becomes effective February 21, 1978. FOOTER:
Document Text
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AD Final Rules - DRS_78-04-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-04-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Subject: Aileron Spoiler Mixer Cam Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/21/1978 Make: The Boeing Company Model: DC-9-11 | DC-9-12 | DC-9-13 | DC-9-14 | DC-9-15 | DC-9-15F | DC-9-21 | DC-9-31 | DC-9-32 | DC-9-32 (...Show more 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: 78-04-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3141 AD NUMBER: 78-04-03 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C ACTION: SUMMARY: DATES: Effective February 21, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-04-03 MCDONNELL DOUGLAS: Amendment 39-3141. Applies to Model DC-9 Series airplanes, certificated in all categories, including Military Type C-9A, C-9B, and VC-9C, F/N's 1 through 862. Compliance required as indicated. To prevent the aileron/spoiler mixer cam from disengaging from the cam roller, accomplish the following: (a) Within the next 275 hours time in service after the effective date of this AD, unless already accomplished, inspect and re-shim if required as specified in Items 1 through 6 under Accomplishment Instructions in McDonnell Douglas DC-9 Alert Service Bulletin A27-189 dated October 7, 1977 or later FAA approved revision. (b) Within the next 2000 hours time in service after the effective date of this AD, unless already accomplished, add washers as specified in Item 7 under Accomplishment Instructions in McDonnell Douglas DC-9 Alert Service Bulletin A27-189 dated October 7, 1977 or later FAA approved revision, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region. (c) Special Flight permits may be issued in accordance with FAR's 21.197 and 21.199 to authorize operation of an airplane to a base for the accomplishment of the inspections and modifications required by this AD. This amendment becomes effective February 21, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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