AD 74-04-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-44D4 | Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes |
| aircraft | Bombardier Inc. | CL-44J | Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes |
Unsafe Condition
Cracks in the main landing gear uplock attachment fitting, P/N 44-10162 and -1, at the four corners of the lug.
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Required Actions
Inspect the main landing gear uplock attachment fitting using dye penetrant inspection with at least 10-power magnification or an approved equivalent. Replace cracked parts before further flight or repair them as specified in Canadair's Service Information Circular 374-CL-44 or with an approved equivalent repair.
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Compliance Time
Within the next 100 hours' time in service after the effective date of this AD, unless accomplished within the last 400 hours' time in service, and at intervals not exceeding 500 hours' time in service thereafter.
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Affected Aircraft
Bombardier Inc. Model CL-44D4 and CL-44J airplanes with more than 20,000 hours' time in service.
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Federal Register Abstract
Main Landing Gear Uplock Fitting
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_74-04-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-04-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes Subject: Main Landing Gear Uplock Fitting Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/20/1974 Make: Bombardier Inc. Model: CL-44D4 | CL-44J Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 74-04-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1788 AD NUMBER: 74-04-05 SUBJECT HEADING: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes ACTION: SUMMARY: DATES: Effective February 20, 1974. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-04-05 CANADAIR: Amdt. 39-1788. Applies to all CL-44D4 and CL-44J airplanes with more than 20,000 hours' time in service. To detect cracks in the main landing gear uplock attachment fitting, P/N 44-10162 and -1, accomplish the following: 1. Within the next 100 hours' time in service after the effective date of this AD, unless accomplished within the last 400 hours' time in service, and at intervals thereafter not to exceed 500 hours' time in service, inspect the main landing gear uplock attachment fitting, P/N 44-10162 and -1 at the four corners of the lug for cracks using a dye penetrant inspection with a glass of at least 10-power or an approved equivalent inspection. 2. Cracked parts must be replaced before further flight, or repaired before further flight as specified in paragraphs 1(a) and (b) of the Inspection Procedure of Canadair's Service Information Circular 374-CL-44 or with an approved equivalent repair. 3. The compliance times may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, upon receipt of substantiating data submitted through an FAA maintenance inspector. 4. Equivalent inspections, parts or repairs must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective February 20, 1974. FOOTER:
Document Text
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AD Final Rules - DRS_74-04-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-04-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes Subject: Main Landing Gear Uplock Fitting Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/20/1974 Make: Bombardier Inc. Model: CL-44D4 | CL-44J Product Type: Aircraft Product Subtype: Large 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: 74-04-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1788 AD NUMBER: 74-04-05 SUBJECT HEADING: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes ACTION: SUMMARY: DATES: Effective February 20, 1974. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-04-05 CANADAIR: Amdt. 39-1788. Applies to all CL-44D4 and CL-44J airplanes with more than 20,000 hours' time in service. To detect cracks in the main landing gear uplock attachment fitting, P/N 44-10162 and -1, accomplish the following: 1. Within the next 100 hours' time in service after the effective date of this AD, unless accomplished within the last 400 hours' time in service, and at intervals thereafter not to exceed 500 hours' time in service, inspect the main landing gear uplock attachment fitting, P/N 44-10162 and -1 at the four corners of the lug for cracks using a dye penetrant inspection with a glass of at least 10-power or an approved equivalent inspection. 2. Cracked parts must be replaced before further flight, or repaired before further flight as specified in paragraphs 1(a) and (b) of the Inspection Procedure of Canadair's Service Information Circular 374-CL-44 or with an approved equivalent repair. 3. The compliance times may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, upon receipt of substantiating data submitted through an FAA maintenance inspector. 4. Equivalent inspections, parts or repairs must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective February 20, 1974. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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