AD 79-12-09

final rule

Airworthiness Directives; Piper Model PA-36-285 Aircraft

AD Number
79-12-09
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft turbine engine assembly
Problem area Engine

Applicability

TypeManufacturerModelDetails
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.

AI-generated summary from the source AD text. Verify against the official source before acting.

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.

AI-generated summary from the source AD text. Verify against the official source before acting.

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

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Piper Aircraft Inc. Model PA-36-285 serial numbers 36-7360001 through 36-7660135

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Engine Mount Attach Brackets

Applicability Source Text

Show captured applicability text from the source AD
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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Superseded AD: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Superseded By: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

Show stored source text (verify against official source)
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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