AD 85-01-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat Aircraft Inc | S-2A | Airworthiness Directives; Pitts Model S-2A Series Airplanes |
Unsafe Condition
Cracks in the welds attaching P/N 2-5100-12 stick housings to P/N 2-5100-11 tube in the cockpit control tube assembly could cause loss of normal aileron and elevator control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the cockpit control tube assembly with a 10 power glass for cracks near the welds. If cracks are found, weld shut the cracks and install P/N 2-5100-20 gussets at both fore and aft stick housing locations per Pitts Service Letter No. 5, Revision B. If no cracks, install the gussets as specified. Installing P/N 2-5100-19 gussets per Pitts Service Letter No. 5, Revision A also complies. Equivalent methods may be approved by the Denver Aircraft Certification Office.
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Compliance Time
within the next 25 hours time-in-service after the effective date of this AD, unless already accomplished
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Affected Aircraft
Aviat Aircraft Inc Model S-2A serial numbers 2001 through 2105
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Federal Register Abstract
Cockpit Control Tube Assembly
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_85-01-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 85-01-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Pitts Model S-2A Series Airplanes Subject: Cockpit Control Tube Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/21/1985 Make: Aviat Aircraft Inc Model: S-2A Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 85-01-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4980 AD NUMBER: 85-01-04 SUBJECT HEADING: Airworthiness Directives; Pitts Model S-2A Series Airplanes ACTION: SUMMARY: DATES: Effective January 21, 1985. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 85-01-04 PITTS: Amendment 39-4980. Applies to Model S-2A (S/N's 2001 through 2105) airplanes certificated in any category. Compliance: Required within the next 25 hours time-in-service after the effective date of this AD, unless already accomplished. To prevent loss of normal aileron and elevator control: (a) Visually inspect the cockpit control tube assembly using a 10 power glass for cracks in the area of the welds attaching the P/N 2-5100-12 stick housings to the P/N 2-5100-11 tube. (1) If cracks are detected weld shut the cracks and install a P/N 2-5100-20 gusset at both the fore and aft stick housing locations in accordance with Pitts Service Letter No. 5, Revision B. (2) If cracks are not present, install P/N 2-5100-20 gussets in accordance with Pitts Service Letter No. 5, Revision B. (b) The aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where this AD can be accomplished. (c) Installation of P/N 2-5100-19 gussets in accordance with Pitts Service Letter No. 5, Revision A, satisfies the requirements of this AD. (d) An equivalent means of compliance with this AD may be used if approved by the Manager, Denver Aircraft Certification Office, Federal Aviation Administration, Northwest Mountain Region, 10455 East 25th Avenue, Suite 307, Aurora, Colorado 80010; Telephone (303) 340-5594. This amendment becomes effective on January 21, 1985. FOOTER:
Document Text
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AD Final Rules - DRS_85-01-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 85-01-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Pitts Model S-2A Series Airplanes Subject: Cockpit Control Tube Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/21/1985 Make: Aviat Aircraft Inc Model: S-2A Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 85-01-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4980 AD NUMBER: 85-01-04 SUBJECT HEADING: Airworthiness Directives; Pitts Model S-2A Series Airplanes ACTION: SUMMARY: DATES: Effective January 21, 1985. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 85-01-04 PITTS: Amendment 39-4980. Applies to Model S-2A (S/N's 2001 through 2105) airplanes certificated in any category. Compliance: Required within the next 25 hours time-in-service after the effective date of this AD, unless already accomplished. To prevent loss of normal aileron and elevator control: (a) Visually inspect the cockpit control tube assembly using a 10 power glass for cracks in the area of the welds attaching the P/N 2-5100-12 stick housings to the P/N 2-5100-11 tube. (1) If cracks are detected weld shut the cracks and install a P/N 2-5100-20 gusset at both the fore and aft stick housing locations in accordance with Pitts Service Letter No. 5, Revision B. (2) If cracks are not present, install P/N 2-5100-20 gussets in accordance with Pitts Service Letter No. 5, Revision B. (b) The aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where this AD can be accomplished. (c) Installation of P/N 2-5100-19 gussets in accordance with Pitts Service Letter No. 5, Revision A, satisfies the requirements of this AD. (d) An equivalent means of compliance with this AD may be used if approved by the Manager, Denver Aircraft Certification Office, Federal Aviation Administration, Northwest Mountain Region, 10455 East 25th Avenue, Suite 307, Aurora, Colorado 80010; Telephone (303) 340-5594. This amendment becomes effective on January 21, 1985. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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