AD 78-06-02
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McCauley Propeller Systems | 3FF32C501 | MCCAULEY PROPELLERS Model 3FF32C501 Propellers |
| propeller | McCauley Propeller Systems | 3FF32C501 | MCCAULEY PROPELLERS Model 3FF32C501 Propellers |
Unsafe Condition
Blade actuating pin screws (P/N A-1635-104) may fail, leading to possible blade pitch control failures.
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Required Actions
Replace blade actuating pin screws P/N A-1635-104 with new screws P/N A-1635-108 per McCauley Service Bulletin No. 131 and Service Manual No. 751201. The replacement must be done by an FAA Certificated Propeller Repair Station.
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Compliance Time
before further flight
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Affected Aircraft
McCauley Propeller Systems Model 3FF32C501 propellers with specified serial numbers listed in the AD, installed on but not limited to Cessna Model 421C and 404 aircraft.
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Federal Register Abstract
Blade Actuating Pin Screws
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-06-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-06-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: MCCAULEY PROPELLERS Model 3FF32C501 Propellers Subject: Blade Actuating Pin Screws Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/07/1978 Make: McCauley Propeller Systems Model: 3FF32C501 Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 78-06-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3233 AD NUMBER: 78-06-02 SUBJECT HEADING: MCCAULEY PROPELLERS Model 3FF32C501 Propellers ACTION: SUMMARY: DATES: Effective June 7, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-06-02 MCCAULEY PROPELLERS: Amendment 39-3159 as amended by Amendment 39-3233. Applies to the following three bladed full feathering constant speed Model 3FF32C501 propellers installed on but not limited to the Cessna Model 421C and 404 aircraft: Affected Propeller Serial Numbers 769303 769304 769571 769572 769573 769574 769575 769576 769577 769578 769579 769580 769581 769582 769583 769584 769585 769586 769587 769588 769589 769590 770176 770177 770178 770179 770601 770602 770603 770604 770605 770606 770607 770643 770644 770645 770646 770647 770648 770649 770650 770651 770652 770653 770654 771239 771291 771318 771319 771320 771321 771322 771323 771324 771325 771326 771327 771328 771329 771330 771331 771332 771333 771334 771335 771491 771492 771493 771495 771496 771497 771498 771499 771500 771534 771535 771536 771537 771538 771539 771540 771734 771735 771736 771737 771738 771739 771740 771741 771742 771743 771744 771745 771746 771747 771748 771839 771840 771841 771843 771848 772212 772213 772335 772336 772337 772338 772339 772340 772341 772342 772343 772344 772345 772346 772347 772348 772349 772396 772397 772398 772399 772400 772401 772429 772430 772432 772433 772434 772435 772436 772437 772438 772439 772440 772952 772953 772958 772959 772960 772961 772994 772995 772996 772997 772998 772999 773000 773047 773048 773049 773050 773051 773052 773053 773054 773055 773056 773057 773058 773059 773060 773061 773062 773066 773184 773185 773186 773187 773188 773189 773190 773191 773348 773349 773350 773351 773352 773353 773356 773358 773359 773360 773361 773573 773574 773575 773896 773897 773898 773899 773903 773966 773969 773970 773971 773973 773974 774113 774116 774122 774124 774175 774178 774180 774181 NOTE: Serial numbers are stamped on the side of the propeller hub. These propellers are equipped with Model 90UMB-0 blades. Compliance required before further flight, except that the airplane may be flown in accordance with FAR 21.197 to a Federal Aviation Administration Certificate Propeller Repair Station. To prevent possible blade pitch control failures, accomplish the following: (a) Replace blade actuating pin screws, P/N A-1635-104 (cadmium plated), with new screws, P/N A-1635-108 (black oxide) in accordance with McCauley Service Bulletin No. 131 dated January 20, 1978, and Service Manual No. 751201 or later Federal Aviation Administration approved revisions. (b) Replacement of the above parts must be accomplished by a Federal Aviation Administration Certificated Propeller Repair Station, since it is considered a major repair. (c) When the affected propellers are approved for return to service, compliance with this airworthiness directive shall be noted in the Aircraft's Records. The manufacturer's specifications and procedures identified in this directive are incorporated herein and made part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by the directive who have not already received these documents from the manufacturer, may obtain copies upon request to McCauley Accessory Division, Cessna Aircraft Company, Box 7, Roosevelt Station, Dayton, Ohio 45417. These documents may also be examined at the Great Lakes Regional Office, 2300 East Devon Avenue, Des Plaines, Illinois 60018, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. 20591. A historical file on this airworthiness directive which includes incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and the Great Lakes Region. Amendment 39-3101 became effective March 22, 1978. This amendment 39-3233 becomes effective on June 7, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-06-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-06-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: MCCAULEY PROPELLERS Model 3FF32C501 Propellers Subject: Blade Actuating Pin Screws Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/07/1978 Make: McCauley Propeller Systems Model: 3FF32C501 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: 78-06-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3233 AD NUMBER: 78-06-02 SUBJECT HEADING: MCCAULEY PROPELLERS Model 3FF32C501 Propellers ACTION: SUMMARY: DATES: Effective June 7, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-06-02 MCCAULEY PROPELLERS: Amendment 39-3159 as amended by Amendment 39-3233. Applies to the following three bladed full feathering constant speed Model 3FF32C501 propellers installed on but not limited to the Cessna Model 421C and 404 aircraft: Affected Propeller Serial Numbers 769303 769304 769571 769572 769573 769574 769575 769576 769577 769578 769579 769580 769581 769582 769583 769584 769585 769586 769587 769588 769589 769590 770176 770177 770178 770179 770601 770602 770603 770604 770605 770606 770607 770643 770644 770645 770646 770647 770648 770649 770650 770651 770652 770653 770654 771239 771291 771318 771319 771320 771321 771322 771323 771324 771325 771326 771327 771328 771329 771330 771331 771332 771333 771334 771335 771491 771492 771493 771495 771496 771497 771498 771499 771500 771534 771535 771536 771537 771538 771539 771540 771734 771735 771736 771737 771738 771739 771740 771741 771742 771743 771744 771745 771746 771747 771748 771839 771840 771841 771843 771848 772212 772213 772335 772336 772337 772338 772339 772340 772341 772342 772343 772344 772345 772346 772347 772348 772349 772396 772397 772398 772399 772400 772401 772429 772430 772432 772433 772434 772435 772436 772437 772438 772439 772440 772952 772953 772958 772959 772960 772961 772994 772995 772996 772997 772998 772999 773000 773047 773048 773049 773050 773051 773052 773053 773054 773055 773056 773057 773058 773059 773060 773061 773062 773066 773184 773185 773186 773187 773188 773189 773190 773191 773348 773349 773350 773351 773352 773353 773356 773358 773359 773360 773361 773573 773574 773575 773896 773897 773898 773899 773903 773966 773969 773970 773971 773973 773974 774113 774116 774122 774124 774175 774178 774180 774181 NOTE: Serial numbers are stamped on the side of the propeller hub. These propellers are equipped with Model 90UMB-0 blades. Compliance required before further flight, except that the airplane may be flown in accordance with FAR 21.197 to a Federal Aviation Administration Certificate Propeller Repair Station. To prevent possible blade pitch control failures, accomplish the following: (a) Replace blade actuating pin screws, P/N A-1635-104 (cadmium plated), with new screws, P/N A-1635-108 (black oxide) in accordance with McCauley Service Bulletin No. 131 dated January 20, 1978, and Service Manual No. 751201 or later Federal Aviation Administration approved revisions. (b) Replacement of the above parts must be accomplished by a Federal Aviation Administration Certificated Propeller Repair Station, since it is considered a major repair. (c) When the affected propellers are approved for return to service, compliance with this airworthiness directive shall be noted in the Aircraft's Records. The manufacturer's specifications and procedures identified in this directive are incorporated herein and made part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by the directive who have not already received these documents from the manufacturer, may obtain copies upon request to McCauley Accessory Division, Cessna Aircraft Company, Box 7, Roosevelt Station, Dayton, Ohio 45417. These documents may also be examined at the Great Lakes Regional Office, 2300 East Devon Avenue, Des Plaines, Illinois 60018, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. 20591. A historical file on this airworthiness directive which includes incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and the Great Lakes Region. Amendment 39-3101 became effective March 22, 1978. This amendment 39-3233 becomes effective on June 7, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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