AD 59-12-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-24 | Airworthiness Directives; Piper Model PA-24 and PA-24 "250" Aircraft |
| aircraft | Piper Aircraft Inc. | PA-24-250 | Airworthiness Directives; Piper Model PA-24 and PA-24 "250" Aircraft |
Unsafe Condition
Control wheel sprocket stud P/N 20913-00 failure due to cracks or twisting and elongated hole.
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Required Actions
Inspect sprocket stud P/N 20913-00 to ensure no cracks, twisting, or elongated hole. Replace damaged parts before further operation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than July 30, 1959
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Affected Aircraft
Piper Model PA-24 and PA-24-250 aircraft with serial numbers 24-1 Through 24-764, 24-766 Through 24-779, 24-781 Through 24-820, 24-822 Through 24-842, 24-844 Through 24-849, 24-851 Through 24-856, 24-858, 24-860 Through 24-865, 24-867 Through 24-871, 24-875, 24-878, 24-880, 24-881, and 24-885 that have or have had an automatic control system installed.
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Federal Register Abstract
Control Wheel Sprocket Stud
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_59-12-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 59-12-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-24 and PA-24 "250" Aircraft Subject: Control Wheel Sprocket Stud Status: Current Citation: This information is not available. Citation Publish Date: 06/30/1959 Effective Date: 06/30/1959 Make: Piper Aircraft Inc. Model: PA-24 | PA-24-250 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: 59-12-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 59-12-09 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-24 and PA-24 "250" Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 59-12-09 PIPER: Applies to PA-24 and PA-24 "250" Aircraft Serial Numbers 24-1 Through 24-764, 24-766 Through 24-779, 24-781 Through 24-820, 24-822 Through 24-842, 24- 844 Through 24-849, 24-851 Through 24-856, 24-858, 24-860 Through 24-865, 24-867 Through 24-871, 24-875, 24-878, 24-880, 24-881, and 24-885. Compliance required not later than July 30, 1959. Due to a recent inflight incident where control wheel sprocket stud P/N 20913-00 failed, inspect the sprocket stud P/N 20913-00 where the sprocket was attached on all aircraft that have or have had an automatic control system installed and ascertain that the stud is not cracked or twisted and the hole is not elongated. Parts found cracked or damaged are to be replaced before further operation. (Piper Service Bulletin No. 172 covers this inspection in detail.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_59-12-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 59-12-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-24 and PA-24 "250" Aircraft Subject: Control Wheel Sprocket Stud Status: Current Citation: This information is not available. Citation Publish Date: 06/30/1959 Effective Date: 06/30/1959 Make: Piper Aircraft Inc. Model: PA-24 | PA-24-250 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: 59-12-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 59-12-09 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-24 and PA-24 "250" Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 59-12-09 PIPER: Applies to PA-24 and PA-24 "250" Aircraft Serial Numbers 24-1 Through 24-764, 24-766 Through 24-779, 24-781 Through 24-820, 24-822 Through 24-842, 24- 844 Through 24-849, 24-851 Through 24-856, 24-858, 24-860 Through 24-865, 24-867 Through 24-871, 24-875, 24-878, 24-880, 24-881, and 24-885. Compliance required not later than July 30, 1959. Due to a recent inflight incident where control wheel sprocket stud P/N 20913-00 failed, inspect the sprocket stud P/N 20913-00 where the sprocket was attached on all aircraft that have or have had an automatic control system installed and ascertain that the stud is not cracked or twisted and the hole is not elongated. Parts found cracked or damaged are to be replaced before further operation. (Piper Service Bulletin No. 172 covers this inspection in detail.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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