AD 77-01-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 |
Unsafe Condition
Missing horizontal stabilizer skin-stiffener rivet attachments could cause possible hazards in flight.
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Required Actions
Inspect and repair the horizontal stabilizer skin-stiffener rivet attachment in accordance with Piper Service Bulletin No. 521 or equivalent procedures approved by the FAA.
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Compliance Time
within the next fifty hours in service from the effective date of this AD
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Affected Aircraft
Piper Models PA-31, PA-31-325, and PA-31-350 with specific serial numbers: PA-31/PA-31-325 serials 31-7612060 through 31-7612080, 31-7612082 through 31-7612089, 31-7612091, 31-7612096, 31-7612099; PA-31-350 serials 31-7652105 through 31-7652115, 31-7652117, 31-7652118, 31-7652120 through 31-7652146, 31-7652148 through 31-7652162, 31-7652164, 31-7652165, 31-7652168 and above, and aircraft with a replacement horizontal stabilizer installed in the field after April 1976.
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Federal Register Abstract
Horizontal Stabilizer
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-01-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-01-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Subject: Horizontal Stabilizer Status: Current Citation: This information is not available. Citation Publish Date: 01/17/1977 Effective Date: 01/19/1977 Make: Piper Aircraft Inc. Model: PA-31 | PA-31-325 | PA-31-350 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: 77-01-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2806 AD NUMBER: 77-01-06 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 ACTION: SUMMARY: DATES: Effective January 19, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-01-06 PIPER: Amendment 39-2806. Applies to Models PA-31 and PA-31-325, Serial Nos. 31-7612060 through 31-7612080, 31-7612082 through 31-7612089, 31-7612091, 31- 7612096 and 31-7612099; Model PA-31-350, Serial Nos. 31-7652105 through 31-7652115, 31- 7652117, 31-7652118, 31-7652120 through 31-7652146, 31-7652148 through 31-7652162, 31- 7652164, 31-7652165 and 31-7652168 and above model aircraft which have had a replacement horizontal stabilizer installed in the field subsequent to April 1976, certificated in all categories. To prevent possible hazards in flight associated with missing horizontal stabilizer skin- stiffener rivet attachments, accomplish the following within the next fifty hours in service from the effective date of this AD unless previously accomplished: (a) Inspect and, if required, repair the horizontal stabilizer skin-stiffener rivet attachment in accordance with the "Instructions" section of Piper Service Bulletin No. 521 or equivalent procedures approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective January 19, 1977. FOOTER:
Document Text
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AD Final Rules - DRS_77-01-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-01-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Subject: Horizontal Stabilizer Status: Current Citation: This information is not available. Citation Publish Date: 01/17/1977 Effective Date: 01/19/1977 Make: Piper Aircraft Inc. Model: PA-31 | PA-31-325 | PA-31-350 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: 77-01-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2806 AD NUMBER: 77-01-06 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 ACTION: SUMMARY: DATES: Effective January 19, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-01-06 PIPER: Amendment 39-2806. Applies to Models PA-31 and PA-31-325, Serial Nos. 31-7612060 through 31-7612080, 31-7612082 through 31-7612089, 31-7612091, 31- 7612096 and 31-7612099; Model PA-31-350, Serial Nos. 31-7652105 through 31-7652115, 31- 7652117, 31-7652118, 31-7652120 through 31-7652146, 31-7652148 through 31-7652162, 31- 7652164, 31-7652165 and 31-7652168 and above model aircraft which have had a replacement horizontal stabilizer installed in the field subsequent to April 1976, certificated in all categories. To prevent possible hazards in flight associated with missing horizontal stabilizer skin- stiffener rivet attachments, accomplish the following within the next fifty hours in service from the effective date of this AD unless previously accomplished: (a) Inspect and, if required, repair the horizontal stabilizer skin-stiffener rivet attachment in accordance with the "Instructions" section of Piper Service Bulletin No. 521 or equivalent procedures approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective January 19, 1977. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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