AD 73-14-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-34-200 | Airworthiness Directives; Piper Model PA-34-200 Airplanes |
Unsafe Condition
Cracks in the exhaust system, including cracked or broken ducts or flanges, which could lead to engine failure or fire.
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Required Actions
Inspect the entire exhaust system using an inspection mirror, 100 watt light, and four power magnifying glass. Replace cracked or broken ducts, flanges, or parts with new replacements or repair in accordance with AC 43.13-1 before further flight.
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Compliance Time
Within the next 10 hours time in service after the effective date of this AD or before the accumulation of 60 hours time in service whichever occurs later and thereafter at intervals not to exceed 25 hours time in service from the last inspection.
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Affected Aircraft
Piper Model PA-34-200 airplanes, Serial Numbers 34-E4 and 34-7250001 and up equipped with exhaust systems Piper Part Numbers 96465-00 and 96466-00.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Cracks in Exhaust System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_73-14-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-14-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-34-200 Airplanes Subject: Cracks in Exhaust System Status: Current Citation: This information is not available. Citation Publish Date: 06/21/1973 Effective Date: 06/29/1973 Make: Piper Aircraft Inc. Model: PA-34-200 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: 73-14-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1673 AD NUMBER: 73-14-02 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-34-200 Airplanes ACTION: SUMMARY: DATES: Effective June 29, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-14-02 PIPER: Amdt. 39-1673. Applies to PA-34-200 airplanes, Serial Numbers 34-E4 and 34-7250001 and up equipped with exhaust systems Piper Part Numbers 96465-00 and 96466-00. Compliance required within the next 10 hours time in service after the effective date of this AD or before the accumulation of 60 hours time in service whichever occurs later and thereafter at intervals not to exceed 25 hours time in service from the last inspection. To insure that cracks are not present in the exhaust system, accomplish the following: (a) Remove both right and left nose cowls, Piper Part Numbers 96500-34 and 96500-35, and open both right and left cowl doors on both right and left engines. Inspect the entire exhaust system for any evidence of cracks or failed ducts or flanges. Use an inspection mirror as required, a minimum 100 watt light and a minimum four power magnifying glass. (b) If the exhaust systems are found to contain cracked or broken ducts, flanges or parts, replace with new replacement parts or repair the affected parts in accordance with Advisory Circular 43.13-1 before further flight. Piper Service Bulletin No. 373A pertains to this subject. This supersedes amendment 39-1564 (37 F.R. 25221) AD 72-25-01. This amendment becomes effective June 29, 1973. FOOTER:
Document Text
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AD Final Rules - DRS_73-14-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-14-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-34-200 Airplanes Subject: Cracks in Exhaust System Status: Current Citation: This information is not available. Citation Publish Date: 06/21/1973 Effective Date: 06/29/1973 Make: Piper Aircraft Inc. Model: PA-34-200 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: 73-14-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1673 AD NUMBER: 73-14-02 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-34-200 Airplanes ACTION: SUMMARY: DATES: Effective June 29, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-14-02 PIPER: Amdt. 39-1673. Applies to PA-34-200 airplanes, Serial Numbers 34-E4 and 34-7250001 and up equipped with exhaust systems Piper Part Numbers 96465-00 and 96466-00. Compliance required within the next 10 hours time in service after the effective date of this AD or before the accumulation of 60 hours time in service whichever occurs later and thereafter at intervals not to exceed 25 hours time in service from the last inspection. To insure that cracks are not present in the exhaust system, accomplish the following: (a) Remove both right and left nose cowls, Piper Part Numbers 96500-34 and 96500-35, and open both right and left cowl doors on both right and left engines. Inspect the entire exhaust system for any evidence of cracks or failed ducts or flanges. Use an inspection mirror as required, a minimum 100 watt light and a minimum four power magnifying glass. (b) If the exhaust systems are found to contain cracked or broken ducts, flanges or parts, replace with new replacement parts or repair the affected parts in accordance with Advisory Circular 43.13-1 before further flight. Piper Service Bulletin No. 373A pertains to this subject. This supersedes amendment 39-1564 (37 F.R. 25221) AD 72-25-01. This amendment becomes effective June 29, 1973. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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