AD 50-05-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-12 | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-12S | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | J3C-40 | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | J3C-50 | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | J3C-50S | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | J3C-65S | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-11 | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-11S | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
| aircraft | Piper Aircraft Inc. | J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)) | Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft |
Unsafe Condition
Understrength Nicopress sleeves in the control system may exceed 0.353 inch in major dimension, increasing failure risk.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Check major dimension of pressed portions of all sleeves. Repress sleeves exceeding 0.353 inch with two presses using National Telephone Supply Co.'s hand tool 51-M-850. Use the provided go-gage to verify dimension. Adjust tool per manufacturer's instructions and ensure larger axis aligns with original press plane. If installing new sleeves, use three presses as recommended.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
at next periodic inspection but not later than March 1, 1950
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Aircraft Inc. models J3C, PA-11, PA-12 manufactured between November 1945 and November 1946 inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Nicopress Sleeve Rework
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_50-05-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 50-05-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft Subject: Nicopress Sleeve Rework Status: Current Citation: This information is not available. Citation Publish Date: 06/17/1950 Effective Date: Make: Piper Aircraft Inc. Model: PA-12 | PA-12S | J3C-40 | J3C-50 | J3C-50S | J3C-65S | PA-11 | PA-11S ...Show more 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: 50-05-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 50-05-01 SUBJECT HEADING: Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 50-05-01 PIPER: Applies to All J3C, PA-11, PA-12 Aircraft Manufactured Between November 1945 and November 1946 Inclusive. Compliance required at next periodic inspection but not later than March 1, 1950. In order to minimize the possibility of understrength Nicopress sleeves in the control system, check the major dimension of the pressed portions of all sleeves. If this dimension exceeds 0.353 inch, the sleeve should be repressed to this dimension by two presses with National Telephone Supply Co.'s hand tool 51-M-850. The go-gage furnished with the tool may be used to check the 0.353-inch dimension. In repressing the sleeves, the hand tool used should be carefully adjusted in accordance with the manufacturer's instructions and the sleeves should be recompressed with the larger axis in the same plane as during the original press. If new Nicopress sleeves are installed, three presses with the hand tool should be used as recommended by the sleeve manufacturer. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_50-05-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 50-05-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft Subject: Nicopress Sleeve Rework Status: Current Citation: This information is not available. Citation Publish Date: 06/17/1950 Effective Date: Make: Piper Aircraft Inc. Model: PA-12 | PA-12S | J3C-40 | J3C-50 | J3C-50S | J3C-65S | PA-11 | PA-11S ...Show more 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: 50-05-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 50-05-01 SUBJECT HEADING: Airworthiness Directives; Piper Models All J3C, PA-11, and PA-12 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 50-05-01 PIPER: Applies to All J3C, PA-11, PA-12 Aircraft Manufactured Between November 1945 and November 1946 Inclusive. Compliance required at next periodic inspection but not later than March 1, 1950. In order to minimize the possibility of understrength Nicopress sleeves in the control system, check the major dimension of the pressed portions of all sleeves. If this dimension exceeds 0.353 inch, the sleeve should be repressed to this dimension by two presses with National Telephone Supply Co.'s hand tool 51-M-850. The go-gage furnished with the tool may be used to check the 0.353-inch dimension. In repressing the sleeves, the hand tool used should be carefully adjusted in accordance with the manufacturer's instructions and the sleeves should be recompressed with the larger axis in the same plane as during the original press. If new Nicopress sleeves are installed, three presses with the hand tool should be used as recommended by the sleeve manufacturer. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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