AD 46-44-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 120 | Airworthiness Directives; CESSNA Model 120 and 140 Airplanes |
| aircraft | Cessna Aircraft Company | 140 | Airworthiness Directives; CESSNA Model 120 and 140 Airplanes |
Unsafe Condition
The U.S. Rubber Co. P-212 and P-212L Series flexible ducts in the carburetor hot air system may degrade, leading to potential failure of the system.
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Required Actions
Replace U.S. Rubber Co. P-212 and P-212L Series flexible ducts with U.S. Rubber Co. P-208-S duct or P-208 duct coated with neoprene by Cessna or its distributors.
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Compliance Time
prior to December 1, 1946
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Affected Aircraft
Cessna Model 120 and 140 Aircraft Serial Numbers up to and including 9721.
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Federal Register Abstract
Carburetor Hot Air Ducts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-44-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-44-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 120 and 140 Airplanes Subject: Carburetor Hot Air Ducts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Cessna Aircraft Company Model: 120 | 140 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 46-44-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-44-04 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 120 and 140 Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-44-04 CESSNA: (Was Mandatory Note 4 of AD-768-4.) Applies to 120 and 140 Aircraft Serial Numbers Up to and Including 9721. Replacement required prior to December 1, 1946. All U. S. Rubber Co. P-212 and P-212L Series flexible ducts installed in the carburetor hot air system should be replaced by U. S. Rubber Co. P-208-S duct or P-208 duct coated with neoprene by Cessna or its distributors. (Cessna Service Letter No. 16-120 and 140 covers this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_46-44-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-44-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 120 and 140 Airplanes Subject: Carburetor Hot Air Ducts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Cessna Aircraft Company Model: 120 | 140 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: 46-44-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-44-04 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 120 and 140 Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-44-04 CESSNA: (Was Mandatory Note 4 of AD-768-4.) Applies to 120 and 140 Aircraft Serial Numbers Up to and Including 9721. Replacement required prior to December 1, 1946. All U. S. Rubber Co. P-212 and P-212L Series flexible ducts installed in the carburetor hot air system should be replaced by U. S. Rubber Co. P-208-S duct or P-208 duct coated with neoprene by Cessna or its distributors. (Cessna Service Letter No. 16-120 and 140 covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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