AD 47-20-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Univair Aircraft Corporation | 415-C | Airworthiness Directives; ERCO Model All 415 Series Aircraft |
| aircraft | Univair Aircraft Corporation | 415-CD | Airworthiness Directives; ERCO Model All 415 Series Aircraft |
| aircraft | Univair Aircraft Corporation | 415-D | Airworthiness Directives; ERCO Model All 415 Series Aircraft |
Unsafe Condition
Fuel pump lines near the pump may fail and leak due to chafing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect fuel pump lines immediately and at each 25 hours thereafter until alteration is completed. Alter fuel pump lines by rotating the pump top 120 degrees clockwise, replacing fittings with specified elbows, drilling holes in the engine cooling baffle, installing grommets and hose clamps, and routing hoses through the holes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Inspection to be accomplished immediately, alteration to be made not later than the next periodic inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
ERCO Model All 415 Series Aircraft up to and including serial number 3642 with fuel pumps having a metal filter bowl and bearing AC P/N 1539076 on the pump mounting flange.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel pump line alteration
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-20-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-20-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ERCO Model All 415 Series Aircraft Subject: Fuel pump line alteration Status: Current Citation: This information is not available Citation Publish Date: Effective Date: Make: Univair Aircraft Corporation Model: 415-C | 415-CD | 415-D Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-20-03 CITATION: This information is not available PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-20-03 SUBJECT HEADING: Airworthiness Directives; ERCO Model All 415 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-20-03 ERCO: (Was Mandatory Note 11 of AD-718-6.) Applies to All 415 Series Aircraft Ercoupes Up to and Including Serial Number 3642 Which Incorporate Fuel Pumps With a Metal Filter Bowl, and Bearing AC P/N 1539076 on the Pump Mounting Flange. Inspection to be accomplished immediately, alteration to be made not later than the next periodic inspection. Inspect immediately and at each 25 hours thereafter until the following alteration is completed, the fuel pump lines near the pump for failure and leakage due to chafing. Alter fuel pump lines not later than next periodic inspection as follows: Remove the fuel pump top and rotate it 120 degrees clockwise (two screwholes from the original position). Replace the pump inlet port fittings with AN 842-4D elbow and the outlet port fittings with (415-48101-40) elbow having 1/16-inch restriction. Drill two 3/4-inch diameter holes in right front engine cooling baffle and install grommets (AN 931-9-13). Route fuel pump hoses through respective holes; shorten outlet hose (415-48101-2) and install fuel pump hose (415-48101-2 and 415-48101-3) onto respective elbows securing them with two hose clamps (AN 746-4). Safety-wire clamps. Close extra unused hole in baffle with button plug (415-40589-1) or equivalent. (Erco Service Department Memorandum No. 42 dated January 9, 1947, covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-20-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-20-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ERCO Model All 415 Series Aircraft Subject: Fuel pump line alteration Status: Current Citation: This information is not available Citation Publish Date: Effective Date: Make: Univair Aircraft Corporation Model: 415-C | 415-CD | 415-D Product Type: Aircraft Product Subtype: Small 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: 47-20-03 CITATION: This information is not available PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-20-03 SUBJECT HEADING: Airworthiness Directives; ERCO Model All 415 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-20-03 ERCO: (Was Mandatory Note 11 of AD-718-6.) Applies to All 415 Series Aircraft Ercoupes Up to and Including Serial Number 3642 Which Incorporate Fuel Pumps With a Metal Filter Bowl, and Bearing AC P/N 1539076 on the Pump Mounting Flange. Inspection to be accomplished immediately, alteration to be made not later than the next periodic inspection. Inspect immediately and at each 25 hours thereafter until the following alteration is completed, the fuel pump lines near the pump for failure and leakage due to chafing. Alter fuel pump lines not later than next periodic inspection as follows: Remove the fuel pump top and rotate it 120 degrees clockwise (two screwholes from the original position). Replace the pump inlet port fittings with AN 842-4D elbow and the outlet port fittings with (415-48101-40) elbow having 1/16-inch restriction. Drill two 3/4-inch diameter holes in right front engine cooling baffle and install grommets (AN 931-9-13). Route fuel pump hoses through respective holes; shorten outlet hose (415-48101-2) and install fuel pump hose (415-48101-2 and 415-48101-3) onto respective elbows securing them with two hose clamps (AN 746-4). Safety-wire clamps. Close extra unused hole in baffle with button plug (415-40589-1) or equivalent. (Erco Service Department Memorandum No. 42 dated January 9, 1947, covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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