AD 47-02-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | MCDONNELL DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54A-DC | MCDONNELL DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54B-DC | MCDONNELL DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54D-DC | MCDONNELL DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54E-DC | MCDONNELL DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54G-DC | MCDONNELL DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | DC-4 | MCDONNELL DOUGLAS C-54 and DC-4 Aircraft |
Unsafe Condition
Failures in service of the main 9" Douglas aluminum accumulator
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Required Actions
Replace the main 9" Douglas aluminum accumulator with at least one 7 1/2" steel accumulator (Bendix P/N 406920 or Vickers P/N AA14308B) or a Vickers 10" accumulator Model AA-14310.
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Compliance Time
not later than August 1, 1947
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Affected Aircraft
McDonnell Douglas C-54 and DC-4 Aircraft including models C54-DC, C54A-DC, C54B-DC, C54D-DC, C54E-DC, C54G-DC, and DC-4
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Federal Register Abstract
Accumulator
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-02-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-02-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: MCDONNELL DOUGLAS C-54 and DC-4 Aircraft Subject: Accumulator Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/27/1980 Make: The Boeing Company Model: C54-DC | C54A-DC | C54B-DC | C54D-DC | C54E-DC | C54G-DC | DC-4 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-02-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3720 AD NUMBER: 47-02-03 SUBJECT HEADING: MCDONNELL DOUGLAS C-54 and DC-4 Aircraft ACTION: SUMMARY: DATES: Effective March 27, 1980. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-02-03 MCDONNELL DOUGLAS: Amendment 39-3720. (Was Mandatory Note 11 of AD-762-7.) Applies to C-54 and DC-4 Aircraft. To be accomplished not later than August 1, 1947. Because of failures in service of the main 9" Douglas aluminum accumulator, it is necessary to replace it with at least one 7 1/2" steel accumulator, Bendix P/N 406920 or Vickers P/N AA14308B, or Vickers 10" accumulator Model AA-14310. (Douglas Service Bulletin DC-4 No. 9 and Addendum dated January 6, 1956 cover the same subject.) This Amendment 39-3720 becomes effective March 27, 1980. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-02-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-02-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: MCDONNELL DOUGLAS C-54 and DC-4 Aircraft Subject: Accumulator Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/27/1980 Make: The Boeing Company Model: C54-DC | C54A-DC | C54B-DC | C54D-DC | C54E-DC | C54G-DC | DC-4 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: 47-02-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3720 AD NUMBER: 47-02-03 SUBJECT HEADING: MCDONNELL DOUGLAS C-54 and DC-4 Aircraft ACTION: SUMMARY: DATES: Effective March 27, 1980. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-02-03 MCDONNELL DOUGLAS: Amendment 39-3720. (Was Mandatory Note 11 of AD-762-7.) Applies to C-54 and DC-4 Aircraft. To be accomplished not later than August 1, 1947. Because of failures in service of the main 9" Douglas aluminum accumulator, it is necessary to replace it with at least one 7 1/2" steel accumulator, Bendix P/N 406920 or Vickers P/N AA14308B, or Vickers 10" accumulator Model AA-14310. (Douglas Service Bulletin DC-4 No. 9 and Addendum dated January 6, 1956 cover the same subject.) This Amendment 39-3720 becomes effective March 27, 1980. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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