AD 72-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky Aircraft Corporation | S-61A | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61D | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61E | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61L | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61N | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61NM | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61R | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61V | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
Unsafe Condition
Failures of flight control system components due to cracks in 7075-T6 and 7079-T6 aluminum alloy forgings and control system components with part numbers S6140-62118, S6140-62115, and S6140-20004.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect 7075-T6 and 7079-T6 aluminum alloy forgings of the flight control systems within 30 days after the effective date and every 30 days thereafter. Inspect control system components P/N S6140-62118, S6140-62115, and S6140-20004 within 75 days after the effective date. Remove components with cracks from service before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 30 days after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 30 days from the last inspection. Within the next 75 days after the effective date of this AD, unless already accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Sikorsky Model S-61A, S-61D, S-61E, S-61L, S-61N, S-61NM, S-61R, S-61V helicopters certified in all categories.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Alum. Forgings Flight Control System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_72-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Sikorsky Model S-61 Type Helicopters Subject: Alum. Forgings Flight Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/01/1972 Make: Sikorsky Aircraft Corporation Model: S-61A | S-61D | S-61E | S-61L | S-61N | S-61NM | S-61R | S-61V Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 72-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1382 AD NUMBER: 72-03-01 SUBJECT HEADING: Airworthiness Directives; Sikorsky Model S-61 Type Helicopters ACTION: SUMMARY: DATES: Effective February 1, 1972. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-03-01 SIKORSKY AIRCRAFT: Amdt. 39-1382. Applies to S-61 Type Helicopters Certificated in all Categories. To prevent failures of flight control system components accomplish the following: (a) Within the next 30 days after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 30 days from the last inspection, perform inspections of 7075-T6 and 7079-T6 aluminum alloy forgings of the flight control systems in accordance with Section 2 Accomplishment Instructions, Part IA (1) of Sikorsky Service Bulletin No. 61B40-5A or later FAA-approved revisions, or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. If a crack is found, remove the component from service prior to further flight. (b) Within the next 75 days after the effective date of this AD, unless already accomplished, perform an inspection of control system components P/N S6140-62118, S6140-62115 and S6140-20004 in accordance with Section 2, Accomplishment Instructions, Part IIB of Sikorsky Service Bulletin No. 61B40-5A or later FAA-approved revisions or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. If a crack is found, remove the component from service prior to further flight. This amendment is effective February 1, 1972. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_72-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Sikorsky Model S-61 Type Helicopters Subject: Alum. Forgings Flight Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/01/1972 Make: Sikorsky Aircraft Corporation Model: S-61A | S-61D | S-61E | S-61L | S-61N | S-61NM | S-61R | S-61V Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 72-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1382 AD NUMBER: 72-03-01 SUBJECT HEADING: Airworthiness Directives; Sikorsky Model S-61 Type Helicopters ACTION: SUMMARY: DATES: Effective February 1, 1972. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-03-01 SIKORSKY AIRCRAFT: Amdt. 39-1382. Applies to S-61 Type Helicopters Certificated in all Categories. To prevent failures of flight control system components accomplish the following: (a) Within the next 30 days after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 30 days from the last inspection, perform inspections of 7075-T6 and 7079-T6 aluminum alloy forgings of the flight control systems in accordance with Section 2 Accomplishment Instructions, Part IA (1) of Sikorsky Service Bulletin No. 61B40-5A or later FAA-approved revisions, or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. If a crack is found, remove the component from service prior to further flight. (b) Within the next 75 days after the effective date of this AD, unless already accomplished, perform an inspection of control system components P/N S6140-62118, S6140-62115 and S6140-20004 in accordance with Section 2, Accomplishment Instructions, Part IIB of Sikorsky Service Bulletin No. 61B40-5A or later FAA-approved revisions or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. If a crack is found, remove the component from service prior to further flight. This amendment is effective February 1, 1972. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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