AD 68-10-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McCauley Propeller Systems | 2AF34C55 | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
| aircraft | McCauley Propeller Systems | D2A34C | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
| aircraft | McCauley Propeller Systems | D2AF34C | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
| propeller | McCauley Propeller Systems | 2AF34C55 | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
| propeller | McCauley Propeller Systems | D2A34C | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
| propeller | McCauley Propeller Systems | D2AF34C | MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers |
Unsafe Condition
Cracks in the hub alignment dowel and stud holes and adjacent areas could lead to hub failure.
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Required Actions
Remove propeller from aircraft and disassemble to remove hub alignment dowels and studs. Inspect dowel and stud holes for cracks using penetrant method. Replace cracked hubs before further flight. Remove sharp corners in hub holes per service manual or approved alteration.
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Compliance Time
within the next 25 hours' time in service after the effective date of this AD
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Affected Aircraft
McCauley Propeller Systems models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55 series, D2AF34C60 series with hub serial numbers starting with 62, 63, 64, or 65, installed on specific Continental engines.
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Federal Register Abstract
Hub Alignment Dowels
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_68-10-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-10-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF3...Show more Subject: Hub Alignment Dowels Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/11/1968 Make: McCauley Propeller Systems Model: 2AF34C55 | D2A34C | D2AF34C Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 68-10-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-596 AD NUMBER: 68-10-03 SUBJECT HEADING: MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers ACTION: SUMMARY: DATES: Effective May 11, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-10-03 MCCAULEY: Amdt. 39-596. Applies to the following models with hub serial numbers whose first two digits are 62, 63, 64 or 65: D2A34C49, D2A34C49-A installed on Continental IO-470-S engines. D2AF34C54, D2AF34C54-A installed on Continental TSIO-470-D engines. 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G installed on Continental IO-470-L engines. D2AF34C60, D2AF34C60-A, D2AF34C60-B installed on Continental IO-360-A engines. To detect and prevent formation of cracks and possible hub failure, accomplish the following on propellers with 1200 hours' or more time in service within the next 25 hours' time in service after the effective date of this AD, unless previously accomplished: (a) Remove propeller from aircraft and disassemble. Remove hub alignment dowels and hub mounting studs from hub. (b) Inspect dowel and stud holes and adjacent areas for cracks by penetrant method. Replace before further flight any cracked hub with an approved replacement hub or hub which has been inspected and altered according to this AD. (c) Remove sharp corners formed where the hub mounting stud holes and hub alignment dowel pin holes intersect the inside of the propeller hub, in accordance with instructions in McCauley Service Manual or an alteration approved by the Chief, Engineering & Manufacturing Branch, Eastern Region. Propellers with 1200 hours' or more time in service which have been inspected according to Paragraph (b) within 300 hours' time in service prior to the effective date of this AD, but which have not been modified according to Paragraph (c), need not comply with this AD until 300 hours' time in service from such previous inspection. This amendment is effective May 11, 1968. FOOTER:
Document Text
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AD Final Rules - DRS_68-10-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-10-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF3...Show more Subject: Hub Alignment Dowels Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/11/1968 Make: McCauley Propeller Systems Model: 2AF34C55 | D2A34C | D2AF34C Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 68-10-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-596 AD NUMBER: 68-10-03 SUBJECT HEADING: MCCAULEY Models D2A34C49, D2A34C49-A, D2AF34C54, D2AF34C54-A, 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G, D2AF34C60, D2AF34C60-A, D2AF34C60-B Propellers ACTION: SUMMARY: DATES: Effective May 11, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-10-03 MCCAULEY: Amdt. 39-596. Applies to the following models with hub serial numbers whose first two digits are 62, 63, 64 or 65: D2A34C49, D2A34C49-A installed on Continental IO-470-S engines. D2AF34C54, D2AF34C54-A installed on Continental TSIO-470-D engines. 2AF34C55, 2AF34C55-A, 2AF34C55-8, 2AF34C55-C, 2AF34C55-D, 2AF34C55-E, 2AF34C55-F, 2AF34C55-G installed on Continental IO-470-L engines. D2AF34C60, D2AF34C60-A, D2AF34C60-B installed on Continental IO-360-A engines. To detect and prevent formation of cracks and possible hub failure, accomplish the following on propellers with 1200 hours' or more time in service within the next 25 hours' time in service after the effective date of this AD, unless previously accomplished: (a) Remove propeller from aircraft and disassemble. Remove hub alignment dowels and hub mounting studs from hub. (b) Inspect dowel and stud holes and adjacent areas for cracks by penetrant method. Replace before further flight any cracked hub with an approved replacement hub or hub which has been inspected and altered according to this AD. (c) Remove sharp corners formed where the hub mounting stud holes and hub alignment dowel pin holes intersect the inside of the propeller hub, in accordance with instructions in McCauley Service Manual or an alteration approved by the Chief, Engineering & Manufacturing Branch, Eastern Region. Propellers with 1200 hours' or more time in service which have been inspected according to Paragraph (b) within 300 hours' time in service prior to the effective date of this AD, but which have not been modified according to Paragraph (c), need not comply with this AD until 300 hours' time in service from such previous inspection. This amendment is effective May 11, 1968. FOOTER:
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