AD 68-18-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 177 | Airworthiness Directives; CESSNA Model 177 Airplanes |
Unsafe Condition
Failure of the oil pressure gauge line between the engine crankcase and aircraft firewall
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Required Actions
Replace the copper oil pressure gauge line assembly between the engine crankcase and aircraft firewall with a flexible hose assembly in accordance with Cessna Service Letter No. SE68-14, Supplement No. 1, dated August 23, 1968, or any equivalent modification approved by the Chief, Engineering and Manufacturing Branch, Central Region.
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Compliance Time
within the next 10 hours' time-in-service after the effective date of this airworthiness directive, unless already accomplished
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Affected Aircraft
Cessna Model 177, Serial Numbers 661, and 17700001 and 17700003 through 17701164 airplanes
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Federal Register Abstract
Oil Pressure Gauge Line
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_68-18-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-18-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 177 Airplanes Subject: Oil Pressure Gauge Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/05/1968 Make: Cessna Aircraft Company Model: 177 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 68-18-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-647 AD NUMBER: 68-18-02 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 177 Airplanes ACTION: SUMMARY: DATES: Effective September 5, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-18-02 CESSNA: Amendment 39-647. Applies to Model 177, Serial Numbers 661, and 17700001 and 17700003 through 17701164 airplanes. Compliance: Required within the next 10 hours' time-in-service after the effective date of this airworthiness directive, unless already accomplished. To prevent failure of the oil pressure gauge line between the engine crankcase and aircraft firewall, accomplish the following: (A) Replace the copper oil pressure gauge line assembly between the engine crankcase and aircraft firewall with a flexible hose assembly in accordance with Cessna Service Letter No. SE68-14, Supplement No. 1, dated August 23, 1968, or any equivalent modification approved by the Chief, Engineering and Manufacturing Branch, Central Region. This amendment becomes effective September 5, 1968. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_68-18-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-18-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 177 Airplanes Subject: Oil Pressure Gauge Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 09/05/1968 Make: Cessna Aircraft Company Model: 177 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: 68-18-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-647 AD NUMBER: 68-18-02 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 177 Airplanes ACTION: SUMMARY: DATES: Effective September 5, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-18-02 CESSNA: Amendment 39-647. Applies to Model 177, Serial Numbers 661, and 17700001 and 17700003 through 17701164 airplanes. Compliance: Required within the next 10 hours' time-in-service after the effective date of this airworthiness directive, unless already accomplished. To prevent failure of the oil pressure gauge line between the engine crankcase and aircraft firewall, accomplish the following: (A) Replace the copper oil pressure gauge line assembly between the engine crankcase and aircraft firewall with a flexible hose assembly in accordance with Cessna Service Letter No. SE68-14, Supplement No. 1, dated August 23, 1968, or any equivalent modification approved by the Chief, Engineering and Manufacturing Branch, Central Region. This amendment becomes effective September 5, 1968. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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