AD 47-21-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sky Enterprises, Inc. | RC-3 | Airworthiness Directives; Republic Model RC-3 Aircraft |
Unsafe Condition
The existing drain cock or plug on the fuel strainer may not be leakproof and airtight, leading to potential fuel leakage or loss of fuel system integrity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the existing drain cock or plug from the fuel strainer near the right-hand wing fairing. Install adapter 17P65058-1 and W7600-1/8 drain cock, using seal-lube during installation.
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 250, inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Strainer Drain
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-21-16.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-21-16 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Republic Model RC-3 Aircraft Subject: Fuel Strainer Drain 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Date: Make: Sky Enterprises, Inc. Model: RC-3 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-21-16 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-21-16 SUBJECT HEADING: Airworthiness Directives; Republic Model RC-3 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-21-16 REPUBLIC: (Was Mandatory Note 6 of AD-769-2.) Applies to Model RC-3 Aircraft Serial Numbers 5 to 250, 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 a fuel strainer drain which is leakproof and airtight: 1. Remove the existing drain cock or plug from the fuel strainer located near the right hand wing fairing. 2. Install adapter 17P65058-1 in the strainer and install W7600-1/8 drain cock in the end of adapter. Use seal-lube when installing these parts. (Seabee Service Bulletin No. 7 dated February 5, 1947, covers the same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-21-16.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-21-16 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Republic Model RC-3 Aircraft Subject: Fuel Strainer Drain 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: 47-21-16 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-21-16 SUBJECT HEADING: Airworthiness Directives; Republic Model RC-3 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-21-16 REPUBLIC: (Was Mandatory Note 6 of AD-769-2.) Applies to Model RC-3 Aircraft Serial Numbers 5 to 250, 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 a fuel strainer drain which is leakproof and airtight: 1. Remove the existing drain cock or plug from the fuel strainer located near the right hand wing fairing. 2. Install adapter 17P65058-1 in the strainer and install W7600-1/8 drain cock in the end of adapter. Use seal-lube when installing these parts. (Seabee Service Bulletin No. 7 dated February 5, 1947, covers the 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.
Related Airworthiness Directives
48-11-04
final ruleAirworthiness Directives; Republic Model RC-3 Aircraft
Unsafe Condition: The hydraulic pump handle attachment is insecure due to the use of self-locking nuts that may not provide adequate security.
48-01-03
final ruleAirworthiness Directives; Republic Model RC-3 Aircraft
Unsafe Condition: Excessive play in the elevator trim tab due to wear in the clevis pin hole of the horn, which could reduce control effectiveness.
47-21-11
final ruleAirworthiness Directives; Republic Model RC-3 Aircraft
Unsafe Condition: Short circuiting of terminal studs on the firewall
47-21-22
final ruleAirworthiness Directives; Republic Model RC-3 Aircraft
Unsafe Condition: Loosening of engine mounting bolts due to absence or improper installation of tab type lockwashers.