AD 73-01-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 310N | Airworthiness Directives; CESSNA Model 310N, 310P, 310Q Airplanes |
| aircraft | Cessna Aircraft Company | 310P | Airworthiness Directives; CESSNA Model 310N, 310P, 310Q Airplanes |
| aircraft | Cessna Aircraft Company | 310Q | Airworthiness Directives; CESSNA Model 310N, 310P, 310Q Airplanes |
Unsafe Condition
Moisture possibly entering the alternate air system and freezing on powerplant induction system components when operating in below freezing temperatures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install deflector baffles over the alternate air inlet in the vertical baffle and enlarge the warm air cut out in the induction air canister in accordance with Cessna Service Letter ME70-43 and Service Kit SK310-82D, or any other method approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours' time in service after the effective date of this AD
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Affected Aircraft
Cessna Model 310N (Serial Numbers 310N0001 thru 310N0198), Model 310P (Serial Numbers 310P0001 thru 310P0240), and Model 310Q (Serial Numbers 310Q0001 thru 310Q0130) airplanes. Not applicable to Model T310 airplanes within these serial ranges.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Alternate Air System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_73-01-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-01-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 310N, 310P, 310Q Airplanes Subject: Alternate Air System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/05/1973 Make: Cessna Aircraft Company Model: 310N | 310P | 310Q Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 73-01-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1579 AD NUMBER: 73-01-02 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 310N, 310P, 310Q Airplanes ACTION: SUMMARY: DATES: Effective January 5, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-01-02 CESSNA: Amdt. 39-1579. Applies to Model 310N (Serial Numbers 310N0001 thru 310N0198), Model 310P (Serial Numbers 310P0001 thru 310P0240), and Model 310Q (Serial Numbers 310Q0001 thru 310Q0130) airplanes. NOTE: This AD is not applicable to Model T310 airplanes which fall within these serial number ranges. Compliance: Required as indicated, unless already accomplished. To prevent moisture from possibly entering the alternate air system and freezing on powerplant induction system components when operating in below freezing temperatures, accomplish the following: Within 50 hours' time in service after the effective date of this AD, install deflector baffles over the alternate air inlet in the vertical baffle and enlarge the warm air cut out in the induction air canister in accordance with Cessna Service Letter ME70-43 and Service Kit SK310-82D, or any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective January 5, 1973. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_73-01-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-01-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 310N, 310P, 310Q Airplanes Subject: Alternate Air System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/05/1973 Make: Cessna Aircraft Company Model: 310N | 310P | 310Q 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: 73-01-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1579 AD NUMBER: 73-01-02 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 310N, 310P, 310Q Airplanes ACTION: SUMMARY: DATES: Effective January 5, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-01-02 CESSNA: Amdt. 39-1579. Applies to Model 310N (Serial Numbers 310N0001 thru 310N0198), Model 310P (Serial Numbers 310P0001 thru 310P0240), and Model 310Q (Serial Numbers 310Q0001 thru 310Q0130) airplanes. NOTE: This AD is not applicable to Model T310 airplanes which fall within these serial number ranges. Compliance: Required as indicated, unless already accomplished. To prevent moisture from possibly entering the alternate air system and freezing on powerplant induction system components when operating in below freezing temperatures, accomplish the following: Within 50 hours' time in service after the effective date of this AD, install deflector baffles over the alternate air inlet in the vertical baffle and enlarge the warm air cut out in the induction air canister in accordance with Cessna Service Letter ME70-43 and Service Kit SK310-82D, or any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective January 5, 1973. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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