AD 46-23-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Univair Aircraft Corporation | 415-C | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
| aircraft | Univair Aircraft Corporation | 415-CD | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
| aircraft | Univair Aircraft Corporation | 415-D | Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft |
Unsafe Condition
Defective fitting on the upper end of the control column shaft (Erco P/N 415-52129) in the aileron control system may cause undue slack or displacement in the system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Test the aileron control system to a load of 94 pounds at the control wheel periphery, block ailerons during test, check neutral position before and after test, replace control column if neutral position changes more than 5 degrees, and ensure system operates freely after testing. Logbook entry required.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
To be accomplished immediately.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
ERCO Model 415-C, -CD, and -D aircraft with serial numbers 113 to 1306, inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Aileron control column fitting
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-23-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-23-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft Subject: Aileron control column fitting Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Univair Aircraft Corporation Model: 415-C | 415-CD | 415-D Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 46-23-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-23-03 SUBJECT HEADING: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-23-03 ERCO: (Was Mandatory Note 3 of AD-718-6.) Applies Only to 415-C, -CD and -D Aircraft Serial Numbers 113 to 1306, Inclusive. To be accomplished immediately. Due to the possibility of a defective fitting on the upper end of the control column shaft (Erco P/N 415-52129) in the aileron control system, the system should be tested to a load of 94 pounds, applied at the periphery of the control wheel. The ailerons should be blocked for the test. Each control wheel should be tested. The neutral position of the wheel should be noted before the test and if undue slack exists in the system it should be tightened. After the test, again note the neutral position and, if the position has changed more than about 5 degrees, the control column (part number above) should be replaced. If, after the test, the neutral position is within about 5 degrees of the original position, the ailerons should be freed and the system operated with the nose wheel on and off the ground. If the system operated freely and a visual inspection indicates that the system is in good condition, no change is necessary. An appropriate logbook entry shall be made to indicate that the above has been complied with. (Erco Service Bulletin No. 7 covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_46-23-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-23-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft Subject: Aileron control column fitting Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Univair Aircraft Corporation Model: 415-C | 415-CD | 415-D 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: 46-23-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-23-03 SUBJECT HEADING: Airworthiness Directives; ERCO Model 415-C, -CD and -D Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-23-03 ERCO: (Was Mandatory Note 3 of AD-718-6.) Applies Only to 415-C, -CD and -D Aircraft Serial Numbers 113 to 1306, Inclusive. To be accomplished immediately. Due to the possibility of a defective fitting on the upper end of the control column shaft (Erco P/N 415-52129) in the aileron control system, the system should be tested to a load of 94 pounds, applied at the periphery of the control wheel. The ailerons should be blocked for the test. Each control wheel should be tested. The neutral position of the wheel should be noted before the test and if undue slack exists in the system it should be tightened. After the test, again note the neutral position and, if the position has changed more than about 5 degrees, the control column (part number above) should be replaced. If, after the test, the neutral position is within about 5 degrees of the original position, the ailerons should be freed and the system operated with the nose wheel on and off the ground. If the system operated freely and a visual inspection indicates that the system is in good condition, no change is necessary. An appropriate logbook entry shall be made to indicate that the above has been complied with. (Erco Service Bulletin No. 7 covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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