AD 46-05-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 247-D (Army C-73) | BOEING Model 247 Aircraft |
Unsafe Condition
The fuel pump elbow between the engine fuel pump discharge port and the fuel discharge line could fail due to inadequate material or clearance with adjacent engine parts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the elbow with a steel elbow of type AN 822-10 or equivalent. Ensure adequate clearance between the elbow and adjacent engine parts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
next major overhaul
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Affected Aircraft
Boeing Model 247-D (Army C-73) aircraft
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Federal Register Abstract
Fuel Pump Elbow
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-05-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-05-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 247 Aircraft Subject: Fuel Pump Elbow Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: 247-D (Army C-73) Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 46-05-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-05-01 SUBJECT HEADING: BOEING Model 247 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-05-01 BOEING: (Was Mandatory Note 4 of AD-558-1 and Mandatory Note 4 of AD 524- 1.) Applies to Model 247 Aircraft. Compliance required not later than next major overhaul. Replace the elbow located between the engine fuel pump discharge port and the fuel discharge line with a steel elbow of the type AN 822-10 or an equivalent steel elbow to suit the particular pump and discharge line installation. Also, ascertain that there is adequate clearance between the elbow and adjacent engine parts. (Boeing Service Bulletin No. 3 of D-6134 dated December 17, 1945, covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_46-05-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-05-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 247 Aircraft Subject: Fuel Pump Elbow Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: 247-D (Army C-73) 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: 46-05-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-05-01 SUBJECT HEADING: BOEING Model 247 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-05-01 BOEING: (Was Mandatory Note 4 of AD-558-1 and Mandatory Note 4 of AD 524- 1.) Applies to Model 247 Aircraft. Compliance required not later than next major overhaul. Replace the elbow located between the engine fuel pump discharge port and the fuel discharge line with a steel elbow of the type AN 822-10 or an equivalent steel elbow to suit the particular pump and discharge line installation. Also, ascertain that there is adequate clearance between the elbow and adjacent engine parts. (Boeing Service Bulletin No. 3 of D-6134 dated December 17, 1945, covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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