AD 61-25-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 120 | Airworthiness Directives; CESSNA Models 120, 140, and 140A Airplanes |
| aircraft | Cessna Aircraft Company | 140 | Airworthiness Directives; CESSNA Models 120, 140, and 140A Airplanes |
| aircraft | Cessna Aircraft Company | 140A | Airworthiness Directives; CESSNA Models 120, 140, and 140A Airplanes |
Unsafe Condition
Cracks in the corners of the slots in the Met-Co-Aire support plate (P/N RD-1001C-11) and attach plate, and improper installation of rivets securing the landing gear attachment box to the floor structure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Tighten and torque four AN 4 bolts (two on each side) to 50-70 inch-pounds, inspect for cracks in the support plate and attach plate, replace cracked parts with Met-Co-Aire P/N RD-1001C-6 or FAA approved equivalent, inspect and ensure proper installation of rivets securing the landing gear attachment box to the floor structure, and remove adapter plates Cessna P/N 0441147 if installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 20 hours' time in service after the effective date of this AD and at periods thereafter not to exceed 100 hours' time in service for ongoing inspections. For one-time actions, within 20 hours' time in service after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Models 120, 140, and 140A airplanes with Met-Co-Aire Tricycle Landing Gear (STC SA4-916) installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Met-Co-Aire Landing Gear
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_61-25-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 61-25-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Models 120, 140, and 140A Airplanes Subject: Met-Co-Aire Landing Gear Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/20/1961 Make: Cessna Aircraft Company Model: 120 | 140 | 140A Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 61-25-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 61-25-01 SUBJECT HEADING: Airworthiness Directives; CESSNA Models 120, 140, and 140A Airplanes ACTION: SUMMARY: DATES: Effective December 20, 1961. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 61-25-01 CESSNA: Amdt. 376 Part 507 Federal Register December 9, 1961. Applies to All Models 120, 140, and 140A Aircraft, On Which A Met-Co-Aire Tricycle Landing Gear (STC SA4-916) Has Been Installed. Compliance required as indicated. To correct an unsafe condition in the main gear the following shall be accomplished: (a) Within 20 hours' time in service after the effective date of this AD and at periods thereafter not to exceed 100 hours' time in service: (1) Tighten and torque to 50-70 inch-pounds the four AN 4 bolts (two on each side) which extend through the Cessna main gear wedges and the Met-Co-Aire support plate, P/N RD-1001C-11. Care should be taken to insure that the AN 365 stop nuts have not bottomed on the bolt threads before adequately tightening the wedge in place as specified above; use metal washers under the nut or bolt heads as necessary. (2) Conduct a close visual inspection for cracks in the corners of the slots in the support plate, P/N RD-1001C-11, and in the attach plate. Parts exhibiting evidence of cracks shall be replaced with Met-Co-Aire P/N RD-1001C-6 or FAA approved equivalent. When a new part is installed, the repetitive inspection prescribed in this subparagraph may be discontinued. (b) Within 20 hours' time in service after the effective date of this AD: (1) Inspect the attachment of the top flanges of the bulkheads in the landing gear attachment box and perform such work as necessary to assure that all rivets which secure the box to the floor structure are properly installed. Refer to Met-Co-Aire installation instructions dated August 29, 1959, as revised January 1, 1961, for description and location of necessary rivets. (2) If installed, remove the adapter plates, Cessna P/N 0441147, which may have been used to extend the main gear wheels forward. (Met-Co-Aire Service Directive SD-1003 covers this same subject.) This directive effective December 20, 1961. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_61-25-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 61-25-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Models 120, 140, and 140A Airplanes Subject: Met-Co-Aire Landing Gear Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/20/1961 Make: Cessna Aircraft Company Model: 120 | 140 | 140A 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: 61-25-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 61-25-01 SUBJECT HEADING: Airworthiness Directives; CESSNA Models 120, 140, and 140A Airplanes ACTION: SUMMARY: DATES: Effective December 20, 1961. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 61-25-01 CESSNA: Amdt. 376 Part 507 Federal Register December 9, 1961. Applies to All Models 120, 140, and 140A Aircraft, On Which A Met-Co-Aire Tricycle Landing Gear (STC SA4-916) Has Been Installed. Compliance required as indicated. To correct an unsafe condition in the main gear the following shall be accomplished: (a) Within 20 hours' time in service after the effective date of this AD and at periods thereafter not to exceed 100 hours' time in service: (1) Tighten and torque to 50-70 inch-pounds the four AN 4 bolts (two on each side) which extend through the Cessna main gear wedges and the Met-Co-Aire support plate, P/N RD-1001C-11. Care should be taken to insure that the AN 365 stop nuts have not bottomed on the bolt threads before adequately tightening the wedge in place as specified above; use metal washers under the nut or bolt heads as necessary. (2) Conduct a close visual inspection for cracks in the corners of the slots in the support plate, P/N RD-1001C-11, and in the attach plate. Parts exhibiting evidence of cracks shall be replaced with Met-Co-Aire P/N RD-1001C-6 or FAA approved equivalent. When a new part is installed, the repetitive inspection prescribed in this subparagraph may be discontinued. (b) Within 20 hours' time in service after the effective date of this AD: (1) Inspect the attachment of the top flanges of the bulkheads in the landing gear attachment box and perform such work as necessary to assure that all rivets which secure the box to the floor structure are properly installed. Refer to Met-Co-Aire installation instructions dated August 29, 1959, as revised January 1, 1961, for description and location of necessary rivets. (2) If installed, remove the adapter plates, Cessna P/N 0441147, which may have been used to extend the main gear wheels forward. (Met-Co-Aire Service Directive SD-1003 covers this same subject.) This directive effective December 20, 1961. 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.