AD 79-12-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-36-285 | Airworthiness Directives; Piper Model PA-36-285 Aircraft |
Unsafe Condition
Cracks in the welds on the aft side of the gussets of the engine mount attachment brackets on Piper Model PA-36-285 aircraft could lead to engine separation.
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Required Actions
Inspect welds for cracks on the aft side of the gussets using dye check or fluorescent penetrant inspection within 50 hours in service from the effective date. Repeat inspections at intervals not exceeding 100 hours in service. If cracks are found, install Piper Modification Kit No. 763877 or equivalent, and inspect forward side welds for cracks during installation. Repair cracks by removing and rewelding affected areas.
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Compliance Time
Within the next 50 hours in service from the effective date of this AD, unless accomplished within the previous 50 hours in service, and at intervals thereafter not to exceed 100 hours in service from the last inspection
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Affected Aircraft
Piper Aircraft Inc. Model PA-36-285 serial numbers 36-7360001 through 36-7660135
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Federal Register Abstract
Engine Mount Attach Brackets
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_79-12-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-12-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-36-285 Aircraft Subject: Engine Mount Attach Brackets Status: Current Citation: This information is not available. Citation Publish Date: 06/14/1979 Effective Date: 06/19/1979 Make: Piper Aircraft Inc. Model: PA-36-285 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-12-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3494 AD NUMBER: 79-12-09 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-36-285 Aircraft ACTION: SUMMARY: DATES: Effective June 19, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-12-09 PIPER AIRCRAFT CORP: Amendment 39-3494. Applies to Model PA-36-285 serial numbers 36-7360001 through 36-7660135 airplanes certificated in all categories. To detect cracks in the engine mount attachment brackets, accomplish the following: (a) Within the next 50 hours in service from the effective date of this AD, unless accomplished within the previous 50 hours in service, and at intervals thereafter not to exceed 100 hours in service from the last inspection, inspect welds for cracks on the aft side of the gussets on the fuselage where the engine mount is attached using dye check or fluorescent penetrant inspection procedures or equivalent. (b) If cracks are found, install Piper Engine Mount Attachment Modification Kit No. 763877, or equivalent, prior to further flight. During the installation of the kit, inspect the welds for cracks on the forward side of the gussets on the fuselage where the engine mount is attached using dye check or fluorescent penetrant inspection procedures or equivalent. If cracks are found, remove weld from cracked area and reweld. (c) Upon incorporation of Piper Modification Kit No. 763877 or equivalent, compliance with this AD may be cancelled. (d) Equivalent inspections and repairs must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. (e) Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the inspection intervals specified in this AD. Piper S/B No. 615 dated 9/21/78, pertains to this subject. This amendment is effective June 19, 1979. FOOTER:
Document Text
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AD Final Rules - DRS_79-12-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-12-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-36-285 Aircraft Subject: Engine Mount Attach Brackets Status: Current Citation: This information is not available. Citation Publish Date: 06/14/1979 Effective Date: 06/19/1979 Make: Piper Aircraft Inc. Model: PA-36-285 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-12-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3494 AD NUMBER: 79-12-09 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-36-285 Aircraft ACTION: SUMMARY: DATES: Effective June 19, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-12-09 PIPER AIRCRAFT CORP: Amendment 39-3494. Applies to Model PA-36-285 serial numbers 36-7360001 through 36-7660135 airplanes certificated in all categories. To detect cracks in the engine mount attachment brackets, accomplish the following: (a) Within the next 50 hours in service from the effective date of this AD, unless accomplished within the previous 50 hours in service, and at intervals thereafter not to exceed 100 hours in service from the last inspection, inspect welds for cracks on the aft side of the gussets on the fuselage where the engine mount is attached using dye check or fluorescent penetrant inspection procedures or equivalent. (b) If cracks are found, install Piper Engine Mount Attachment Modification Kit No. 763877, or equivalent, prior to further flight. During the installation of the kit, inspect the welds for cracks on the forward side of the gussets on the fuselage where the engine mount is attached using dye check or fluorescent penetrant inspection procedures or equivalent. If cracks are found, remove weld from cracked area and reweld. (c) Upon incorporation of Piper Modification Kit No. 763877 or equivalent, compliance with this AD may be cancelled. (d) Equivalent inspections and repairs must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. (e) Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the inspection intervals specified in this AD. Piper S/B No. 615 dated 9/21/78, pertains to this subject. This amendment is effective June 19, 1979. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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