Airworthiness Directives (ADs)
CAA-2017-11-011
The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.
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Issue Date
- 2017/12/05
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Applicability
- to Model S-76A, S-76B, S-76C, and S-76D helicopters, serial numbers up to and including 761075, with a main rotor (M/R) servo pushrod (pushrod) assembly part number (P/N) 76400-00034-059, 76400-00014-074, 76400-00014-076, or 76400-00014-077 installed, certificated in any category.
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Model Number
- Sikorsky Model S-76A, S-76B, S-76C, and S-76D helicopters
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CAA AD Number
- CAA-2017-11-011
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2017-19-01
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Effective Date
- 2018/01/02
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Subject
- This AD defines the unsafe condition as a loose jamnut. This condition could result in failure of a pushrod assembly, loss of M/R flight control, and subsequent loss of control of the helicopter.
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Reference Publications (Revision/ATA/SB)
- Ref. Publications: Sikorksy S-76 Helicopter Alert Service Bulletin 76-67-58, Basic Issue, dated November 19
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Remarks
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Download
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