AD 75-16-18
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dowty Propellers | (c) R.209/4-40-4.5 | DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers |
| aircraft | Dowty Propellers | (c) R.245/4-40-4.5 | DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers |
| aircraft | Dowty Propellers | (c) R.259/4-40-4.5 | DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers |
| propeller | Dowty Propellers | (c) R.209/4-40-4.5 | DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers |
| propeller | Dowty Propellers | (c) R.245/4-40-4.5 | DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers |
| propeller | Dowty Propellers | (c) R.259/4-40-4.5 | DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers |
Unsafe Condition
Propeller blade failures from cracks or forging defects in flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and test specified blade serial numbers for cracks or forging defects. Repair blades in accordance with Dowty Rotol Bulletin 61-A862 or remove from service if repair is not possible. Return blades to service only if free of defects or repaired as required.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 300 hours propeller time in service after the effective date of this AD or before the accumulation of 5300 hours propeller time in service, whichever occurs later
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Affected Aircraft
Dowty Propellers models R245/4-40-4.5/13, R259/4-40-4.5/17, and R209/4-40-4.5/2 propellers with specified blade serial numbers listed in the AD, used on Convair 600 series and YS-11 series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Blades
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_75-16-18.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-16-18 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers Subject: Blades Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/29/1975 Make: Dowty Propellers Model: (c) R.209/4-40-4.5 | (c) R.245/4-40-4.5 | (c) R.259/4-40-4.5 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: 75-16-18 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2292 AD NUMBER: 75-16-18 SUBJECT HEADING: DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers ACTION: SUMMARY: DATES: Effective July 29, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-16-18 DOWTY ROTOL: Amendment 39-2292. Applies to Dowty Rotol Propellers R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 used on Convair 600 series and YS-11 series airplanes. Compliance required as indicated within the next 300 hours propeller time in service after the effective date of this AD or before the accumulation of 5300 hours propeller time in service, whichever occurs later, unless already accomplished. To prevent propeller blade failures from occurring in flight: (a) Inspect and test the following serial number blades for cracks or forging defects in accordance with Appendix B of Dowty Rotol Alert Service Bulletin 61-A862, Revision 1, dated May 22, 1975, (hereafter Dowty Rotol Bulletin 61-A862) or later FAA-approved revision, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa and Middle East Region, c/o American Embassy, APO New York, N.Y. 09667. YS11 & 11A propeller blades with blade serial numbers: A124879 A125027 A125113 A125242 A125292 A12556 A125720 A124882 A125028 A125115 A125243 A125293 A125570 A125762 A124884 A125035 A125116 A125244 A125294 A125583 A125780 A124890 A125036 A125121 A125245 A125296 A125585 A125822 A124892 A125037 A125122 A125246 A125298 A125587 A125824 A124893 A125038 A125123 A125299 A125247 A125589 A125833 A124894 A125039 A125141 A125248 A125302 A125590 A125834 A124906 A125040 A125142 A125249 A125304 A125611 A125835 A124907 A125047 A125143 A125251 A125316 A125612 A125842 A124908 A125048 A125149 A125252 A125317 A125613 A125843 A124909 A125049 A125151 A125262 A125318 A125614 A125900 A124910 A125050 A125152 A125263 A125527 A125628 A125908 A124928 A125051 A125159 A125264 A125528 A125629 A125911 A124929 A125057 A125160 A125272 A125538 A125642 A125930 A125008 A125058 A125275 A125540 A125654 A125654 A125956 A125009 A125059 A125165 A125276 A125547 A12565 A125982 A125010 A125061 A125166 A125283 A125549 A125674 A125984 A125016 A125062 A125167 A125285 A125556 A125676 A125985 A125017 A125090 A125169 A125287 A125557 A125677 A125989 A125018 A125091 A125171 A125288 A125565 A125708 A126089 A125019 A125093 A125290 A125290 A125566 A125709 A126090 A125025 A125112 A125239 A125291 A125567 A125718 A126122 Convair propeller blades with blade serial numbers: A125447 A125661 A125448 A125662 A125458 A125699 A125462 A125844 (b) If cracks or forging defects are found, comply with (1) or (2) as appropriate: (1) Repair the blade in accordance with Appendix B of Dowty Rotol Bulletin 61-A862 or later FAA-approved revision or an FAA equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa and Middle East Region, c/o American Embassy, APO New York, N.Y. 09667. (2) Remove the blade from service if repair cannot be made in accordance with paragraph (b)(1). (c) Blades may be returned to service following inspection and test if found free of cracks or forging defects or have been repaired in accordance with paragraph (b)(1) of this AD. This amendment becomes effective July 29, 1975. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_75-16-18.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-16-18 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers Subject: Blades Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/29/1975 Make: Dowty Propellers Model: (c) R.209/4-40-4.5 | (c) R.245/4-40-4.5 | (c) R.259/4-40-4.5 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: 75-16-18 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2292 AD NUMBER: 75-16-18 SUBJECT HEADING: DOWTY ROTOL Models R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 Propellers ACTION: SUMMARY: DATES: Effective July 29, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-16-18 DOWTY ROTOL: Amendment 39-2292. Applies to Dowty Rotol Propellers R245/4-40-4.5/13, R259/4-40-4.5/17 and R209/4-40-4.5/2 used on Convair 600 series and YS-11 series airplanes. Compliance required as indicated within the next 300 hours propeller time in service after the effective date of this AD or before the accumulation of 5300 hours propeller time in service, whichever occurs later, unless already accomplished. To prevent propeller blade failures from occurring in flight: (a) Inspect and test the following serial number blades for cracks or forging defects in accordance with Appendix B of Dowty Rotol Alert Service Bulletin 61-A862, Revision 1, dated May 22, 1975, (hereafter Dowty Rotol Bulletin 61-A862) or later FAA-approved revision, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa and Middle East Region, c/o American Embassy, APO New York, N.Y. 09667. YS11 & 11A propeller blades with blade serial numbers: A124879 A125027 A125113 A125242 A125292 A12556 A125720 A124882 A125028 A125115 A125243 A125293 A125570 A125762 A124884 A125035 A125116 A125244 A125294 A125583 A125780 A124890 A125036 A125121 A125245 A125296 A125585 A125822 A124892 A125037 A125122 A125246 A125298 A125587 A125824 A124893 A125038 A125123 A125299 A125247 A125589 A125833 A124894 A125039 A125141 A125248 A125302 A125590 A125834 A124906 A125040 A125142 A125249 A125304 A125611 A125835 A124907 A125047 A125143 A125251 A125316 A125612 A125842 A124908 A125048 A125149 A125252 A125317 A125613 A125843 A124909 A125049 A125151 A125262 A125318 A125614 A125900 A124910 A125050 A125152 A125263 A125527 A125628 A125908 A124928 A125051 A125159 A125264 A125528 A125629 A125911 A124929 A125057 A125160 A125272 A125538 A125642 A125930 A125008 A125058 A125275 A125540 A125654 A125654 A125956 A125009 A125059 A125165 A125276 A125547 A12565 A125982 A125010 A125061 A125166 A125283 A125549 A125674 A125984 A125016 A125062 A125167 A125285 A125556 A125676 A125985 A125017 A125090 A125169 A125287 A125557 A125677 A125989 A125018 A125091 A125171 A125288 A125565 A125708 A126089 A125019 A125093 A125290 A125290 A125566 A125709 A126090 A125025 A125112 A125239 A125291 A125567 A125718 A126122 Convair propeller blades with blade serial numbers: A125447 A125661 A125448 A125662 A125458 A125699 A125462 A125844 (b) If cracks or forging defects are found, comply with (1) or (2) as appropriate: (1) Repair the blade in accordance with Appendix B of Dowty Rotol Bulletin 61-A862 or later FAA-approved revision or an FAA equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa and Middle East Region, c/o American Embassy, APO New York, N.Y. 09667. (2) Remove the blade from service if repair cannot be made in accordance with paragraph (b)(1). (c) Blades may be returned to service following inspection and test if found free of cracks or forging defects or have been repaired in accordance with paragraph (b)(1) of this AD. This amendment becomes effective July 29, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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