AD 47-21-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sky Enterprises, Inc. | RC-3 | Airworthiness Directives; Republic Model RC-3 Aircraft |
Unsafe Condition
The existing backfire screen on the flexible hot air tube may fail to prevent backfires, leading to potential interference with the carburetor air duct or the old screen.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove existing backfire screen from the flexible hot air tube, install new type screen with flush end, and securely attach it to prevent interference with the carburetor air duct or old screen.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than the next 25 hours of operation subsequent to July 1, 1947, and in any case not later than September 1, 1947
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Republic Model RC-3 Aircraft, serial numbers 5 to 125, inclusive.
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Federal Register Abstract
Backfire Screen
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-21-17.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-21-17 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Republic Model RC-3 Aircraft Subject: Backfire Screen Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Sky Enterprises, Inc. Model: RC-3 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-21-17 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-21-17 SUBJECT HEADING: Airworthiness Directives; Republic Model RC-3 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-21-17 REPUBLIC: (Was Mandatory Note 7 of AD-769-2.) Applies to Model RC-3 Aircraft Serial Numbers 5 to 125, Inclusive. To be accomplished not later than the next 25 hours of operation subsequent to July 1, 1947, and in any case not later than September 1, 1947. In order to provide an improved backfire screen, remove existing screen from flexible hot air tube, install new type screen with flush end locating it to prevent interference with the carburetor air duct or the old screen which will be reinstalled. Securely attach new screen to tube. (Republic Seabee Bulletin No. 2 covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-21-17.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-21-17 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Republic Model RC-3 Aircraft Subject: Backfire Screen Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Sky Enterprises, Inc. Model: RC-3 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: 47-21-17 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-21-17 SUBJECT HEADING: Airworthiness Directives; Republic Model RC-3 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-21-17 REPUBLIC: (Was Mandatory Note 7 of AD-769-2.) Applies to Model RC-3 Aircraft Serial Numbers 5 to 125, Inclusive. To be accomplished not later than the next 25 hours of operation subsequent to July 1, 1947, and in any case not later than September 1, 1947. In order to provide an improved backfire screen, remove existing screen from flexible hot air tube, install new type screen with flush end locating it to prevent interference with the carburetor air duct or the old screen which will be reinstalled. Securely attach new screen to tube. (Republic Seabee Bulletin No. 2 covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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