AD 58-23-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mooney Aviation Company Inc | M20 | Airworthiness Directives; Mooney Model M-20 Aircraft |
Unsafe Condition
Failures of the aileron counterbalance buttweld at the aileron spar have occurred.
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Required Actions
Determine if a 3/8 inch O.D. x 0.028 inch x 3 inch steel reinforcing brace is installed. If not, remove paint from the welded joint and inspect for cracks, reweld the joint if cracks are present, and install the specified 4130 steel tubular brace trimmed to fit.
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Compliance Time
As soon as practicable but not later than December 15, 1958.
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Affected Aircraft
Mooney Model M-20 Aircraft Serial Numbers 1002 Through 1051.
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Federal Register Abstract
Aileron Counterbalance Brace
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_58-23-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-23-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Mooney Model M-20 Aircraft Subject: Aileron Counterbalance Brace Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Mooney Aviation Company Inc Model: M20 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 58-23-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-23-03 SUBJECT HEADING: Airworthiness Directives; Mooney Model M-20 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-23-03 MOONEY: Applies to Model M-20 Aircraft Serial Numbers 1002 Through 1051. Compliance required as soon as practicable but not later than December 15, 1958. Several failures of the aileron counterbalance buttweld at the aileron spar have occurred. The affected airplanes do not have a 3/8 inch O.D. x 0.028 inch x 3 inch steel reinforcing brace installed. It must be determined whether this brace has been incorporated. If not, the following inspection and repair must be accomplished: 1. Remove the paint from the subject welded joint and inspect for cracks. 2. Reweld the joint if cracks are present. 3. Install the 3/8 inch O.D. x 0.028 inch x 3 inch 4130 steel tubular brace (trimmed to fit). (Mooney Aircraft, Inc. Service Letter 20-7 Revision B covers this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_58-23-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-23-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Mooney Model M-20 Aircraft Subject: Aileron Counterbalance Brace Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Mooney Aviation Company Inc Model: M20 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: 58-23-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-23-03 SUBJECT HEADING: Airworthiness Directives; Mooney Model M-20 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-23-03 MOONEY: Applies to Model M-20 Aircraft Serial Numbers 1002 Through 1051. Compliance required as soon as practicable but not later than December 15, 1958. Several failures of the aileron counterbalance buttweld at the aileron spar have occurred. The affected airplanes do not have a 3/8 inch O.D. x 0.028 inch x 3 inch steel reinforcing brace installed. It must be determined whether this brace has been incorporated. If not, the following inspection and repair must be accomplished: 1. Remove the paint from the subject welded joint and inspect for cracks. 2. Reweld the joint if cracks are present. 3. Install the 3/8 inch O.D. x 0.028 inch x 3 inch 4130 steel tubular brace (trimmed to fit). (Mooney Aircraft, Inc. Service Letter 20-7 Revision B covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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