AD 48-38-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rogers, Burl A. | 15AC | Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft |
| aircraft | Rogers, Burl A. | S15AC | Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft |
Unsafe Condition
The present oil cooler installed on the suction side of the engine oil pump may cause possible loss of engine oil pressure and subsequent engine damage during cold weather starting.
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Required Actions
Revise and install the oil cooler on the pressure side of the pump, install an oil cooler adapter assembly with Continental Motors Corp. Drawings 530536 and 530697, replace the pressure oil screen, install a new suction oil screen (P/N A20878), replace the oil cooler bypass spring with a 35 p.s.i. spring, and replumb the oil cooler with different fittings and line arrangement.
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Compliance Time
before operation at temperatures below freezing, but in any case not later than December 1, 1948
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Affected Aircraft
Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Inclusive
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Federal Register Abstract
Oil Cooler Installation
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_48-38-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-38-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft Subject: Oil Cooler Installation Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/01/1948 Make: Rogers, Burl A. Model: 15AC | S15AC Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 48-38-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-38-01 SUBJECT HEADING: Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft ACTION: SUMMARY: DATES: Effective December 1, 1948. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-38-01 AERONCA: Applies to Serial Numbers 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Inclusive. Compliance required before operation at temperatures below freezing, but in any case not later than December 1, 1948. To prevent the possible loss of engine oil pressure and subsequent engine damage during cold weather starting, the present oil cooler installed on the suction side of the engine oil pump must be revised and installed on the pressure side of the pump. This change involves the following: 1. Installation of an oil cooler adapter assembly, Continental Motors Corp. Drawing 530536 and 530697, replacing pressure oil screen. This pressure oil screen is then used in adapter assembly. 2. Install new suction oil screen, Continental Motors Corp. P/N A20878. 3. Replace present oil cooler bypass spring with a 35 p.s.i. spring. 4. Replumb oil cooler with different fittings and line arrangement. (Aeronca Service Helps and Hints Bulletin No. 35 covers this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_48-38-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-38-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft Subject: Oil Cooler Installation Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/01/1948 Make: Rogers, Burl A. Model: 15AC | S15AC Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 48-38-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-38-01 SUBJECT HEADING: Airworthiness Directives; Aeronca Models 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Aircraft ACTION: SUMMARY: DATES: Effective December 1, 1948. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-38-01 AERONCA: Applies to Serial Numbers 15AC-1 to 15AC-227 Inclusive, or S15AC-1 to S15AC-227 Inclusive. Compliance required before operation at temperatures below freezing, but in any case not later than December 1, 1948. To prevent the possible loss of engine oil pressure and subsequent engine damage during cold weather starting, the present oil cooler installed on the suction side of the engine oil pump must be revised and installed on the pressure side of the pump. This change involves the following: 1. Installation of an oil cooler adapter assembly, Continental Motors Corp. Drawing 530536 and 530697, replacing pressure oil screen. This pressure oil screen is then used in adapter assembly. 2. Install new suction oil screen, Continental Motors Corp. P/N A20878. 3. Replace present oil cooler bypass spring with a 35 p.s.i. spring. 4. Replumb oil cooler with different fittings and line arrangement. (Aeronca Service Helps and Hints Bulletin No. 35 covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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