AD 79-10-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-44D4 | Airworthiness Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes |
| aircraft | Bombardier Inc. | CL-44J | Airworthiness Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes |
Unsafe Condition
Failure of the main landing gear actuating system due to cracks in the end caps of the main landing gear actuator (Jarry Hydraulics P/N 3650-3 or -7, Canadair Assembly numbers 44-75129-800 or -802).
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Required Actions
Inspect the end caps of the main landing gear actuator using dye penetrant or FAA-approved equivalent inspection. Replace cracked end caps prior to next flight.
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Compliance Time
prior to application for U.S. registration and airworthiness certification
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Affected Aircraft
Bombardier Inc. Models CL-44D4 and CL-44J, all serial numbers.
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Federal Register Abstract
Main Landing Gear Actuating System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_79-10-12.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-10-12 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes Subject: Main Landing Gear Actuating System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/18/1979 Make: Bombardier Inc. Model: CL-44D4 | CL-44J Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-10-12 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3471 AD NUMBER: 79-10-12 SUBJECT HEADING: Airworthiness Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes ACTION: SUMMARY: DATES: Effective May 18, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-10-12 CANADAIR: Amendment 39-3471. Applies to all Canadair Models CL-44D4 and CL-44J certificated in all categories. Compliance required prior to application for U.S. registration and airworthiness certification. To preclude possible failure of the main landing gear actuating system, accomplish the following: a) Inspect the end caps of the main landing gear actuator, Jarry Hydraulics, P/N 3650-3 or -7 (Canadair Assembly numbers 44-75129-800 or -802 respectively) for cracks using the dye penetrant method or an FAA approved equivalent inspection. b) If cracks are found, replace end cap with a crack free cap prior to next flight. This amendment is effective May 18, 1979. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_79-10-12.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-10-12 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes Subject: Main Landing Gear Actuating System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/18/1979 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: 79-10-12 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3471 AD NUMBER: 79-10-12 SUBJECT HEADING: Airworthiness Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes ACTION: SUMMARY: DATES: Effective May 18, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-10-12 CANADAIR: Amendment 39-3471. Applies to all Canadair Models CL-44D4 and CL-44J certificated in all categories. Compliance required prior to application for U.S. registration and airworthiness certification. To preclude possible failure of the main landing gear actuating system, accomplish the following: a) Inspect the end caps of the main landing gear actuator, Jarry Hydraulics, P/N 3650-3 or -7 (Canadair Assembly numbers 44-75129-800 or -802 respectively) for cracks using the dye penetrant method or an FAA approved equivalent inspection. b) If cracks are found, replace end cap with a crack free cap prior to next flight. This amendment is effective May 18, 1979. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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