AD 46-21-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fairchild Industries, Inc. | 24 C8 | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8A | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8B | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8D | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8DS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8E | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8ES | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8F (Army UC-61J) | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24 C8FS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24G (Army UC-61H) | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24GS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24H | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24HS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24J (Army UC-61B) | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24JS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24K (Army UC-61E) | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
| aircraft | Fairchild Industries, Inc. | 24KS | Airworthiness Directives; Fairchild Model 24 Series Aircraft |
Unsafe Condition
Freezing of the upper and lower universal joints on the landing gear oleo shock struts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install new universal joints, Fairchild P/N 3330 and 3328.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
next periodic inspection
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fairchild Model 24 Series Aircraft
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Landing Gear Universal Joints
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-21-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-21-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Model 24 Series Aircraft Subject: Landing Gear Universal Joints Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Fairchild Industries, Inc. Model: 24 C8 | 24 C8A | 24 C8B | 24 C8D | 24 C8DS | 24 C8E | 24 C8ES | 24 C8F (Army UC-61J) | 24 C8FS | 24G...Show more 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: 46-21-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-21-01 SUBJECT HEADING: Airworthiness Directives; Fairchild Model 24 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-21-01 FAIRCHILD: (Was Mandatory Note 6 of AD-702-2: 2 of AD-706-1; 4 of AD- 517-2; 5 of AD-535-2; 4 of AD-564-2; 5 of AD-633-2; 5 of AD-600-2; 4 of AD-667-2.) Applies to Model 24 Series Aircraft. Compliance required at next periodic inspection. To correct the freezing of the upper and lower universal joints on the landing gear oleo shock struts, install new universal joints, Fairchild P/N 3330 and 3328. (Fairchild Service Bulletin 46-24-1-A, revised December 23, 1946, covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_46-21-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-21-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Model 24 Series Aircraft Subject: Landing Gear Universal Joints Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Fairchild Industries, Inc. Model: 24 C8 | 24 C8A | 24 C8B | 24 C8D | 24 C8DS | 24 C8E | 24 C8ES | 24 C8F (Army UC-61J) | 24 C8FS | 24G...Show more 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: 46-21-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-21-01 SUBJECT HEADING: Airworthiness Directives; Fairchild Model 24 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-21-01 FAIRCHILD: (Was Mandatory Note 6 of AD-702-2: 2 of AD-706-1; 4 of AD- 517-2; 5 of AD-535-2; 4 of AD-564-2; 5 of AD-633-2; 5 of AD-600-2; 4 of AD-667-2.) Applies to Model 24 Series Aircraft. Compliance required at next periodic inspection. To correct the freezing of the upper and lower universal joints on the landing gear oleo shock struts, install new universal joints, Fairchild P/N 3330 and 3328. (Fairchild Service Bulletin 46-24-1-A, revised December 23, 1946, covers this same subject.) 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.