AD 47-21-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sky Enterprises, Inc. | RC-3 | Airworthiness Directives; Republic Model RC-3 Aircraft |
Unsafe Condition
Split metal sleeve opening can permit casing to slide out when control is actuated, rendering the control ineffective.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect parking brake, battery, mixture, and carburetor heat flexible controls for presence of brass ferrule or AN 742D3 clamp on split sleeve. Install the clamp or ferrule immediately if not installed.
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, but in no case 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 238, Inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Control Clamps or Brass Ferrules
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-21-19.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-21-19 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Republic Model RC-3 Aircraft Subject: Control Clamps or Brass Ferrules 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Date: Make: Sky Enterprises, Inc. Model: RC-3 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-21-19 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-21-19 SUBJECT HEADING: Airworthiness Directives; Republic Model RC-3 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-21-19 REPUBLIC: (Was Mandatory Note 9 of AD-769-2.) Applies to Model RC-3 Aircraft Serial Numbers 5 to 238, Inclusive. Compliance required not later than the next 25 hours of operation subsequent to July 1, 1947, but in no case later than September 1, 1947. Inspect parking brake, battery, mixture and carburetor heat flexible controls for presence of brass ferrule or AN 742D3 clamp on split sleeve at operating end of these controls. If clamp or ferrule is not installed, split metal sleeve can open permitting casing to slide out when control is actuated thus rendering the control ineffective. The above clamp should be installed immediately. (Seabee Service News No. 10, dated January 13, 1947, covers this subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-21-19.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-21-19 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Republic Model RC-3 Aircraft Subject: Control Clamps or Brass Ferrules 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: 47-21-19 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-21-19 SUBJECT HEADING: Airworthiness Directives; Republic Model RC-3 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-21-19 REPUBLIC: (Was Mandatory Note 9 of AD-769-2.) Applies to Model RC-3 Aircraft Serial Numbers 5 to 238, Inclusive. Compliance required not later than the next 25 hours of operation subsequent to July 1, 1947, but in no case later than September 1, 1947. Inspect parking brake, battery, mixture and carburetor heat flexible controls for presence of brass ferrule or AN 742D3 clamp on split sleeve at operating end of these controls. If clamp or ferrule is not installed, split metal sleeve can open permitting casing to slide out when control is actuated thus rendering the control ineffective. The above clamp should be installed immediately. (Seabee Service News No. 10, dated January 13, 1947, covers this 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.