AD 69-23-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dowty Propellers | (c) R130/4-20-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
| aircraft | Dowty Propellers | (c) R148/4-20-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
| aircraft | Dowty Propellers | (c) R175/4-30-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
| aircraft | Dowty Propellers | (c) R186/4-30-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
| propeller | Dowty Propellers | (c) R130/4-20-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
| propeller | Dowty Propellers | (c) R148/4-20-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
| propeller | Dowty Propellers | (c) R175/4-30-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
| propeller | Dowty Propellers | (c) R186/4-30-4/ | DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers |
Unsafe Condition
Failure of propeller cylinders due to insufficient strength or fatigue.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate Dowty Rotol Modification No. (c) VP.2480 in accordance with Service Bulletin No. 61-564, Revision 4, or later ARB-approved issue, or FAA-approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
At the next scheduled propeller overhaul after the effective date of this AD, or before the cylinder accumulates 6,000 hours total time in service, whichever occurs later.
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Affected Aircraft
Dowty Rotol propellers with propeller cylinder P/N's RA 44133/1, RA 44709, RA 62807, or RA 67888, except those modified by Modification No. (c) VP.2422: (c) R.130/4-20 - 4/12E on Vickers Viscount Model 745D; (c) R.148/4-20 - 4/21E on Viscount Model 744; (c) R.186/4-30 - 4/16 on Hawker Siddeley Argosy AW-650; and (c) R.175/4-30 - 4/13E on Fairchild F.27 and F.27B aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Cylinders
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_69-23-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-23-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R...Show more Subject: Cylinders Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/11/1969 Make: Dowty Propellers Model: (c) R130/4-20-4/ | (c) R148/4-20-4/ | (c) R175/4-30-4/ | (c) R186/4-30-4/ 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: 69-23-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-872 AD NUMBER: 69-23-04 SUBJECT HEADING: DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers ACTION: SUMMARY: DATES: Effective December 11, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-23-04 DOWTY ROTOL: Amdt. 39-872. Applies to the following Dowty Rotol propellers with propeller cylinder P/N's RA 44133/1 or RA 44709 or RA 62807 or RA 67888, except propeller cylinders modified by Modification No. (c) VP.2422: (c) R.130/4-20 - 4/12E installed on Vickers Viscount Model 745D aircraft; (c) R.148/4-20 - 4/21E on Viscount Model 744 aircraft; (c) R.186/4-30 - 4/16 on Hawker Siddeley Argosy AW-650 aircraft; and (c) R.175/4-30 - 4/13E on Fairchild F.27 and F.27B aircraft. Compliance is required as indicated, unless already accomplished. To prevent failure of propeller cylinders, at the next scheduled propeller overhaul after the effective date of this AD, or before the cylinder accumulates 6,000 hours total time in service, whichever occurs later, incorporate Dowty Rotol Modification No. (c) VP.2480 in accordance with Dowty Rotol Service Bulletin No. 61-564, Revision 4, dated December, 1968, or later ARB- approved issue, or FAA-approved equivalent. This amendment becomes effective December 11, 1969. FOOTER:
Document Text
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AD Final Rules - DRS_69-23-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-23-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R...Show more Subject: Cylinders Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/11/1969 Make: Dowty Propellers Model: (c) R130/4-20-4/ | (c) R148/4-20-4/ | (c) R175/4-30-4/ | (c) R186/4-30-4/ 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: 69-23-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-872 AD NUMBER: 69-23-04 SUBJECT HEADING: DOWTY ROTOL Models (c) R.130/4-20 - 4/12E, (c) R.148/4-20 - 4/21E, (c) R.186/4-30 - 4/16, and (c) R.175/4-30 - 4/13E Propellers ACTION: SUMMARY: DATES: Effective December 11, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-23-04 DOWTY ROTOL: Amdt. 39-872. Applies to the following Dowty Rotol propellers with propeller cylinder P/N's RA 44133/1 or RA 44709 or RA 62807 or RA 67888, except propeller cylinders modified by Modification No. (c) VP.2422: (c) R.130/4-20 - 4/12E installed on Vickers Viscount Model 745D aircraft; (c) R.148/4-20 - 4/21E on Viscount Model 744 aircraft; (c) R.186/4-30 - 4/16 on Hawker Siddeley Argosy AW-650 aircraft; and (c) R.175/4-30 - 4/13E on Fairchild F.27 and F.27B aircraft. Compliance is required as indicated, unless already accomplished. To prevent failure of propeller cylinders, at the next scheduled propeller overhaul after the effective date of this AD, or before the cylinder accumulates 6,000 hours total time in service, whichever occurs later, incorporate Dowty Rotol Modification No. (c) VP.2480 in accordance with Dowty Rotol Service Bulletin No. 61-564, Revision 4, dated December, 1968, or later ARB- approved issue, or FAA-approved equivalent. This amendment becomes effective December 11, 1969. FOOTER:
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Related Airworthiness Directives
72-14-01
final ruleDOWTY ROTOL, LTD Models (c)R130/4-20-4/12E, (c)R186/4-30-4/16, (c)R187/4-30-4/18, (c)R193/4-30-4/50, (c)R184/4-30-4/50, (c)R259/4-40-4.5/17, (c)R148/4-20-4/21E, (c)R175/4-30-4/13E, (c)R179/4- 20-4/33, (c)R257/4-30-4/60, (c)R245/4-40-4.5/13, and (c)R209/4-40-4.5/2 Propellers
Unsafe Condition: Failure of a propeller blade due to the disengagement of the blade bearing retaining bolts resulting from excessive wear on the teeth of the locking segments.
72-07-07
final ruleDOWTY ROTOL applies to all propellers with blade root sizes Nos. 20 and 30
Unsafe Condition: Fatigue failure of propeller blades or blade bearings due to loss of bearing pre-load from discrepancies in ground tracks or improper assembly.
69-19-03
final ruleDOWTY ROTOL Models (c) R.130/4-20-4/12E and (c) R.148/4-20-4/21E Propellers
Unsafe Condition: Cracked hub arm threads in Dowty Rotol propellers could result in propeller failure.
67-10-03
final ruleDOWTY-ROTOL PROPELLERS Models (c) R.186/4-30-4/16, (c) R.175/4-30-4/13E, (c) R.130/4-20-4/12E, and (c) R.148/4-20-4/21E Propellers
Unsafe Condition: Failure of the propeller cylinders, P/N's RA.38581, RA.38581/1, RA.44133, RA.44133/1, RA.44709 and RA.62807, due to cracks.