AD 48-43-02
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | 170 | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | 170A | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | 15AC | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
| aircraft | Cessna Aircraft Company | Rogers, Burl A. | S15AC | Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes |
Unsafe Condition
Piston pin plugs of the loose fit type (P/N 25262-A1) are subject to rapid and excessive wear, leading to disintegration of the piston pin plugs, piston failure, and complete engine failure due to oil stoppage from metal particles on the screen and in the system.
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Required Actions
Replace piston pin and plug assemblies P/N 25262-A1 with P/N 530830 (press fit plugs) as soon as possible, and inspect oil screens prior to each flight until the replacement is completed.
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Compliance Time
not later than December 31, 1948
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Affected Aircraft
Cessna Models 170 and Aeronca Models 15AC equipped with Continental C-145-2 engines, serial numbers 3001-8-2 to 3775-8-2 inclusive.
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Federal Register Abstract
Continental C-145-2 Engines
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_48-43-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-43-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes Subject: Continental C-145-2 Engines Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Cessna Aircraft Company | Rogers, Burl A. Model: 170 | 170A | 15AC | S15AC Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 48-43-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-43-02 SUBJECT HEADING: Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-43-02 CESSNA and AERONCA: Applies to All Cessna Model 170 and Aeronca Model 15AC Airplanes Equipped With Continental C-145-2 Engines Serial Numbers 3001-8-2 to 3775- 8-2, Inclusive. Compliance required not later than December 31, 1948. Some piston pin plugs of the loose fit type with which the engines as noted were originally equipped, are subject to rapid and excessive wear which may eventually cause disintegration of the piston pin plugs, failure of pistons, and complete engine failure due to oil stoppage caused by metal particles on the screen and in the system. To preclude the possibility of such failures, piston pin and plug assemblies, P/N 25262-A1 (with loose fit plugs), should be removed and replaced with piston pin and plug assemblies, P/N 530830 (with press fit plugs) as soon as possible, and in no case later than the compliance date shown. Pending installation of the new assemblies, oil screens should be inspected prior to each flight. If aluminum particles are evident on the screen the airplane should be removed from service until the change is accomplished. (Continental Service Bulletins Nos. M48-20 and M48-25 cover this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_48-43-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-43-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes Subject: Continental C-145-2 Engines Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Cessna Aircraft Company | Rogers, Burl A. Model: 170 | 170A | 15AC | S15AC 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: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 48-43-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-43-02 SUBJECT HEADING: Airworthiness Directives; Cessna All Models 170 and Aeronca Models 15AC Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-43-02 CESSNA and AERONCA: Applies to All Cessna Model 170 and Aeronca Model 15AC Airplanes Equipped With Continental C-145-2 Engines Serial Numbers 3001-8-2 to 3775- 8-2, Inclusive. Compliance required not later than December 31, 1948. Some piston pin plugs of the loose fit type with which the engines as noted were originally equipped, are subject to rapid and excessive wear which may eventually cause disintegration of the piston pin plugs, failure of pistons, and complete engine failure due to oil stoppage caused by metal particles on the screen and in the system. To preclude the possibility of such failures, piston pin and plug assemblies, P/N 25262-A1 (with loose fit plugs), should be removed and replaced with piston pin and plug assemblies, P/N 530830 (with press fit plugs) as soon as possible, and in no case later than the compliance date shown. Pending installation of the new assemblies, oil screens should be inspected prior to each flight. If aluminum particles are evident on the screen the airplane should be removed from service until the change is accomplished. (Continental Service Bulletins Nos. M48-20 and M48-25 cover this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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