AD 69-12-05
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-44D4 | Airworthiness Directives; CANADAIR Model CL-44 Airplanes |
| aircraft | Bombardier Inc. | CL-44J | Airworthiness Directives; CANADAIR Model CL-44 Airplanes |
Unsafe Condition
Cracks in the corners of the access cutouts in certain interspar ribs at wing stations.
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Required Actions
Inspect the corners of the access cutouts in the interspar ribs using Canadair Service Information Circular No. 373 (excluding paragraphs 3 and 4) or an FAA-approved equivalent. Replace or repair cracked parts before further flight using Canadair Service Bulletin No. 475 or an FAA-approved method. Repetitive inspections may be waived if ribs are reinforced per the service bulletin.
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Compliance Time
before further flight
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Affected Aircraft
Bombardier Inc. CL-44D4 and CL-44J models, all serial numbers as specified in the referenced Canadair Service Information Circular No. 373.
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Federal Register Abstract
Cracks In Access Cutouts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_69-12-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-12-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Model CL-44 Airplanes Subject: Cracks In Access Cutouts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/27/1969 Make: Bombardier Inc. Model: CL-44D4 | CL-44J Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 69-12-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-777 AD NUMBER: 69-12-05 SUBJECT HEADING: Airworthiness Directives; CANADAIR Model CL-44 Airplanes ACTION: SUMMARY: DATES: Effective June 27, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-12-05 CANADAIR: Amendment 39-777. Applies to CL-44 Type airplanes. To detect cracks in certain interspar ribs accomplish the following: (a) Inspect for cracks the corners of the access cutouts in the interspar ribs at wing stations in accordance with the "Inspection Procedure" outlined in Canadair Service Information Circular (SIC) No. 373 dated June 11, 1968, disregarding paragraph 3 and 4, or later FAA- approved revision, or an FAA-approved equivalent inspection. (b) Replace cracked parts before further flight with a part of the same part number or an FAA-approved equivalent part, or repair cracked parts before further flight in accordance with Canadair Service Bulletin No. 475, or an FAA-approved equivalent repair. (c) The repetitive inspection required by (a) need not be performed if each of the above ribs are reinforced in accordance with Canadair Service Bulletin No. 475, or an FAA- approved equivalent alteration. (d) Equivalent parts, inspections, alterations, repairs and SIC revisions must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. (e) The compliance times may be increased by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, upon receipt of substantiating data through an FAA maintenance inspector. This amendment is effective June 27, 1969. FOOTER:
Document Text
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AD Final Rules - DRS_69-12-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-12-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CANADAIR Model CL-44 Airplanes Subject: Cracks In Access Cutouts Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/27/1969 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: 69-12-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-777 AD NUMBER: 69-12-05 SUBJECT HEADING: Airworthiness Directives; CANADAIR Model CL-44 Airplanes ACTION: SUMMARY: DATES: Effective June 27, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-12-05 CANADAIR: Amendment 39-777. Applies to CL-44 Type airplanes. To detect cracks in certain interspar ribs accomplish the following: (a) Inspect for cracks the corners of the access cutouts in the interspar ribs at wing stations in accordance with the "Inspection Procedure" outlined in Canadair Service Information Circular (SIC) No. 373 dated June 11, 1968, disregarding paragraph 3 and 4, or later FAA- approved revision, or an FAA-approved equivalent inspection. (b) Replace cracked parts before further flight with a part of the same part number or an FAA-approved equivalent part, or repair cracked parts before further flight in accordance with Canadair Service Bulletin No. 475, or an FAA-approved equivalent repair. (c) The repetitive inspection required by (a) need not be performed if each of the above ribs are reinforced in accordance with Canadair Service Bulletin No. 475, or an FAA- approved equivalent alteration. (d) Equivalent parts, inspections, alterations, repairs and SIC revisions must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. (e) The compliance times may be increased by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, upon receipt of substantiating data through an FAA maintenance inspector. This amendment is effective June 27, 1969. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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