AD 51-19-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-18 | Airworthiness Directives; Piper Models PA-18, PA-20, and PA-22 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-20 | Airworthiness Directives; Piper Models PA-18, PA-20, and PA-22 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22 | Airworthiness Directives; Piper Models PA-18, PA-20, and PA-22 Aircraft |
Unsafe Condition
Overage oil radiator hose marked with a solid white line and a broken red line, and designated AN H-35 or MIL H-6000, may be defective and require replacement.
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Required Actions
Inspect immediately to determine proper hose installation. Replace defective hose marked 'Aromatic Resistant Gates Vulco' with correct hose before the compliance deadline.
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Compliance Time
not later than August 31, 1951
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Affected Aircraft
Piper Models PA-18 (Serial Numbers 18-487 to 18-730), PA-20 (Serial Numbers 20-554 to 20-690), and PA-22 (Serial Numbers 22-1 to 22-90)
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Federal Register Abstract
Oil Radiator Hose
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_51-19-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 51-19-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-18, PA-20, and PA-22 Aircraft Subject: Oil Radiator Hose Status: Current Citation: This information is not available. Citation Publish Date: 12/04/1956 Effective Date: Make: Piper Aircraft Inc. Model: PA-18 | PA-20 | PA-22 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: couldn't find issue date AIRWORTHINESS DIRECTIVES FINAL RULES: 51-19-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 51-19-02 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-18, PA-20, and PA-22 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 51-19-02 PIPER: Applies to Models PA-18 Serial Numbers 18-487 to 18-730 Inclusive; PA-20 Serial Numbers 20-554 to 20-690 Inclusive; and PA-22 Serial Numbers 22-1 to 22-90 Inclusive. Compliance required by August 31, 1951. Overage oil radiator hose was installed in an undetermined number of Piper airplanes. Inspect immediately to determine that the proper hose marked with a solid white line and a broken red line and AN H-35 or MIL H-6000 are installed. Defective hose are marked "Aromatic Resistant Gates Vulco" followed by a date with the opposite side marked by a solid white line and broken red line. All defective hose should be replaced as soon as possible but not later than August 31, 1951. (This information supersedes that in Piper Service Letter No. 165 dated March 23, 1951.) FOOTER:
Document Text
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AD Final Rules - DRS_51-19-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 51-19-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-18, PA-20, and PA-22 Aircraft Subject: Oil Radiator Hose Status: Current Citation: This information is not available. Citation Publish Date: 12/04/1956 Effective Date: Make: Piper Aircraft Inc. Model: PA-18 | PA-20 | PA-22 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: couldn't find issue date AIRWORTHINESS DIRECTIVES FINAL RULES: 51-19-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 51-19-02 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-18, PA-20, and PA-22 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 51-19-02 PIPER: Applies to Models PA-18 Serial Numbers 18-487 to 18-730 Inclusive; PA-20 Serial Numbers 20-554 to 20-690 Inclusive; and PA-22 Serial Numbers 22-1 to 22-90 Inclusive. Compliance required by August 31, 1951. Overage oil radiator hose was installed in an undetermined number of Piper airplanes. Inspect immediately to determine that the proper hose marked with a solid white line and a broken red line and AN H-35 or MIL H-6000 are installed. Defective hose are marked "Aromatic Resistant Gates Vulco" followed by a date with the opposite side marked by a solid white line and broken red line. All defective hose should be replaced as soon as possible but not later than August 31, 1951. (This information supersedes that in Piper Service Letter No. 165 dated March 23, 1951.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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