AD 72-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-34-200 | Airworthiness Directives; Piper Model PA-34-200 Airplanes |
Unsafe Condition
Failure of the induction air box valve could result in power loss.
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Required Actions
Inspect the valve assembly for excessive wear or cracks where the shaft mates to the valve assembly. Replace worn, loose, or cracked parts with serviceable parts of the same part numbers or incorporate Piper Kit Number 760 722V. Reassemble induction air boxes and install in accordance with PA-34 service manual.
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Compliance Time
Compliance required within the next 10 hours time in service and thereafter at intervals not to exceed 100 hours time in service from the last inspection (for airplanes with 100 or more hours time in service on the effective date) or upon accumulation of 100 hours time in service or within the next 10 hours, whichever is later (for airplanes with less than 100 hours time in service on the effective date).
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Affected Aircraft
Piper Model PA-34-200 airplanes, Serial Nos. 34-E4 and 34-7250001 through 34-7350074.
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Federal Register Abstract
Induction Air Box Valve
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_72-17-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-17-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-34-200 Airplanes Subject: Induction Air Box Valve Status: Current Citation: This information is not available. Citation Publish Date: 04/23/1973 Effective Date: 04/26/1973 Make: Piper Aircraft Inc. Model: PA-34-200 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: 72-17-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1625 AD NUMBER: 72-17-01 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-34-200 Airplanes ACTION: SUMMARY: DATES: Effective April 26, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-17-01 PIPER: Amendment 39-1500 as amended by Amendment 39-1625. Applies to PA-34-200 airplanes, Serial Nos. 34-E4 and 34-7250001 through 34-7350074. Compliance required as indicated. To prevent the possibility of a power loss due to the failure of the induction air box valve, accomplish the following: (a) For those airplanes with 100 or more hours time in service on the effective date of this airworthiness directive unless already accomplished within the last 100 hours time in service comply with paragraph (c) within the next 10 hours time in service and thereafter at intervals not to exceed 100 hours time in service from the last inspection. (b) For those airplanes with less than 100 hours time in service on the effective date of this airworthiness directive, unless already accomplished, comply with paragraph (c) upon the accumulation of 100 hours time in service or within the next 10 hours, whichever is later, and thereafter at intervals not to exceed 100 hours time in service from the last inspection. (c) Remove the induction air box assembly from each engine and remove the valve assembly from the box assembly to permit a thorough visual inspection of the valve assembly. Inspect the valve assembly for any evidence of excessive wear or cracks in the areas where the shaft mates to the valve assembly. (d) If valve assemblies are found to contain worn, loose, or cracked parts, replace the affected parts with serviceable parts of the same part numbers or incorporate Piper Kit Number 760 722V before further flight. (e) Reassemble induction air boxes, install and rig in accordance with PA-34 service manual. Piper Service Bulletin Number 358 dated August 2, 1972, pertains to this subject. (f) The requirements of this AD do not apply when Piper Kit Number 760 722V is incorporated. Piper Service Bulletin No. 374 dated February 16, 1973, pertains to this subject. Amendment 39-1500 was effective August 17, 1972, and was effective upon receipt for all recipients of the air mail letter dated August 4, 1972, which contained this amendment. This amendment 39-1625 becomes effective April 26, 1973. FOOTER:
Document Text
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AD Final Rules - DRS_72-17-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-17-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-34-200 Airplanes Subject: Induction Air Box Valve Status: Current Citation: This information is not available. Citation Publish Date: 04/23/1973 Effective Date: 04/26/1973 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: 72-17-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1625 AD NUMBER: 72-17-01 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-34-200 Airplanes ACTION: SUMMARY: DATES: Effective April 26, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-17-01 PIPER: Amendment 39-1500 as amended by Amendment 39-1625. Applies to PA-34-200 airplanes, Serial Nos. 34-E4 and 34-7250001 through 34-7350074. Compliance required as indicated. To prevent the possibility of a power loss due to the failure of the induction air box valve, accomplish the following: (a) For those airplanes with 100 or more hours time in service on the effective date of this airworthiness directive unless already accomplished within the last 100 hours time in service comply with paragraph (c) within the next 10 hours time in service and thereafter at intervals not to exceed 100 hours time in service from the last inspection. (b) For those airplanes with less than 100 hours time in service on the effective date of this airworthiness directive, unless already accomplished, comply with paragraph (c) upon the accumulation of 100 hours time in service or within the next 10 hours, whichever is later, and thereafter at intervals not to exceed 100 hours time in service from the last inspection. (c) Remove the induction air box assembly from each engine and remove the valve assembly from the box assembly to permit a thorough visual inspection of the valve assembly. Inspect the valve assembly for any evidence of excessive wear or cracks in the areas where the shaft mates to the valve assembly. (d) If valve assemblies are found to contain worn, loose, or cracked parts, replace the affected parts with serviceable parts of the same part numbers or incorporate Piper Kit Number 760 722V before further flight. (e) Reassemble induction air boxes, install and rig in accordance with PA-34 service manual. Piper Service Bulletin Number 358 dated August 2, 1972, pertains to this subject. (f) The requirements of this AD do not apply when Piper Kit Number 760 722V is incorporated. Piper Service Bulletin No. 374 dated February 16, 1973, pertains to this subject. Amendment 39-1500 was effective August 17, 1972, and was effective upon receipt for all recipients of the air mail letter dated August 4, 1972, which contained this amendment. This amendment 39-1625 becomes effective April 26, 1973. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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