AD 46-14-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fairchild Hiller Corporation | M-62A-3 | Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft |
| aircraft | Fairchild Hiller Corporation | M-62A-4 | Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft |
Unsafe Condition
The aluminum alloy cockpit heat control valve box and valve may fail due to corrosion or structural weakness, leading to potential fire hazards or loss of cockpit heating functionality.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the aluminum alloy cockpit heat control valve box and valve with ferrous metal components at least 0.018-inch thick. Alternatively, remove the valve box and seal the firewall opening with an overlapping ferrous metal sheet secured using existing bolts and nuts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required immediately.
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Affected Aircraft
Fairchild Hiller Corporation Models M-62A3 and M-62A4 Aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Cockpit Heat Control Valve
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-14-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-14-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft Subject: Cockpit Heat Control Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Fairchild Hiller Corporation Model: M-62A-3 | M-62A-4 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 46-14-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-14-02 SUBJECT HEADING: Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-14-02 FAIRCHILD: (Was Mandatory Note 4 of AD-724-2.) Applies to Models M- 62A3 and M-62A4 Aircraft. Compliance required immediately. The aluminum alloy cockpit heat control valve box and valve must be replaced with a valve and box made of ferrous metal at least 0.018-inch thick. If ordinary steel is used, it should be suitably protected against corrosion. In lieu of the foregoing it will be satisfactory to remove the valve box to seal the opening in the firewall with an overlapping sheet of ferrous metal secured with the present bolts and nuts. (Fairchild Service Bulletin No. 45-62-10 dated July 9, 1945, covers this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_46-14-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-14-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft Subject: Cockpit Heat Control Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Fairchild Hiller Corporation Model: M-62A-3 | M-62A-4 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: 46-14-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-14-02 SUBJECT HEADING: Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-14-02 FAIRCHILD: (Was Mandatory Note 4 of AD-724-2.) Applies to Models M- 62A3 and M-62A4 Aircraft. Compliance required immediately. The aluminum alloy cockpit heat control valve box and valve must be replaced with a valve and box made of ferrous metal at least 0.018-inch thick. If ordinary steel is used, it should be suitably protected against corrosion. In lieu of the foregoing it will be satisfactory to remove the valve box to seal the opening in the firewall with an overlapping sheet of ferrous metal secured with the present bolts and nuts. (Fairchild Service Bulletin No. 45-62-10 dated July 9, 1945, covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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