AD 75-24-08
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
Fretted, pitted, or cracked main landing gear actuator attachment bolts (P/N SD300-55880, SD300-65779 or SD300-65779-12S) could result in failure of the main landing gear actuator attachment bolts.
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Required Actions
Inspect main landing gear actuator attachment bolts for fretting, pitting, or cracks. Replace bolts if necessary in accordance with Canadair Service Information Circular 328-CL44D4, Issue 2 or an approved equivalent. Reinstall bolts only if they meet specified type, life limits, and rework criteria.
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Compliance Time
Within the next 25 landings, unless already accomplished within the last 275 landings, and thereafter at subsequent intervals not to exceed 300 landings after the effective date of this AD.
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Affected Aircraft
Bombardier Inc. Model CL-44D4 and CL-44J airplanes not altered in accordance with Canadair Service Bulletin 44-478.
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Federal Register Abstract
Landing Gear Attach Bolts
Applicability Source Text
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AD Final Rules - DRS_75-24-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-24-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes Subject: Landing Gear Attach Bolts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/25/1975 Make: Bombardier Inc. Model: CL-44D4 | CL-44J Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 75-24-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2431 AD NUMBER: 75-24-08 SUBJECT HEADING: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes ACTION: SUMMARY: DATES: Effective November 25, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-24-08 CANADAIR: Amendment 39-2431. Applies to all CL-44D4 and CL-44J airplanes, certificated in all categories, but not altered in accordance with Canadair Service Bulletin 44-478. Compliance required within the next 25 landings, unless already accomplished within the last 275 landings, and thereafter at subsequent intervals not to exceed 300 landings, after the effective date of this AD. To detect fretted, pitted or cracked main landing gear actuator attachment bolts, P/N SD300-55880, SD300-65779 or SD300-65779-12S, inspect and, if necessary, replace bolts in accordance with Canadair Service Information Circular 328-CL44D4, Issue 2 or an approved equivalent inspection and part replacement. Bolts found to be in good condition may be reinstalled provided: (a) they are of a type specified for replacement in the Canadair SIC 328-CL44D4 or are approved equivalent bolts; (b) they have not exceeded the life limits specified in Canadair SIC 328-CL44D4; and (c) they have not been reworked. Equivalent inspection or parts must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. Upon request, with substantiating data submitted through an FAA maintenance inspector, the compliance time of this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective November 25, 1975. FOOTER:
Document Text
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AD Final Rules - DRS_75-24-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-24-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes Subject: Landing Gear Attach Bolts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/25/1975 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: 75-24-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2431 AD NUMBER: 75-24-08 SUBJECT HEADING: Airworthiness Directives; CANADAIR Model CL-44D4 and CL-44J Airplanes ACTION: SUMMARY: DATES: Effective November 25, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-24-08 CANADAIR: Amendment 39-2431. Applies to all CL-44D4 and CL-44J airplanes, certificated in all categories, but not altered in accordance with Canadair Service Bulletin 44-478. Compliance required within the next 25 landings, unless already accomplished within the last 275 landings, and thereafter at subsequent intervals not to exceed 300 landings, after the effective date of this AD. To detect fretted, pitted or cracked main landing gear actuator attachment bolts, P/N SD300-55880, SD300-65779 or SD300-65779-12S, inspect and, if necessary, replace bolts in accordance with Canadair Service Information Circular 328-CL44D4, Issue 2 or an approved equivalent inspection and part replacement. Bolts found to be in good condition may be reinstalled provided: (a) they are of a type specified for replacement in the Canadair SIC 328-CL44D4 or are approved equivalent bolts; (b) they have not exceeded the life limits specified in Canadair SIC 328-CL44D4; and (c) they have not been reworked. Equivalent inspection or parts must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. Upon request, with substantiating data submitted through an FAA maintenance inspector, the compliance time of this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective November 25, 1975. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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