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AD/S-62/11 - Main Rotor Brake Disc
Sikorsky S-62 Series HelicoptersSikorsky S-62 Series Helicopters
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Sikorsky S-62 Series Helicopters
| AD/S-62/11 | Main Rotor Brake Disc | 4/2005 |
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| Applicability: | Model S-62 series helicopters, equipped with part number S6235-20213 or part number 62350-22013-101 rotor brake discs. |
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| Requirement: | 1. Replace part number S6235-20213 rotor brake disc with part number 62350-22013 -101 rotor brake disc in accordance with Paragraph 2 of Sikorsky Service Bulletin (SB) 62B35-13 or SB 62B35-13A.2. Accomplish a detailed inspection of the part number 62350-22013-101 rotor brake disc installation and a dye penetrant inspection of the rotor brake disc for cracking; in accordance with Paragraph E (2) of Sikorsky Alert Service Bulletin 62B35-12 (except that the minimum thickness for the new disc is .449 inches and the attachment bolt torque is changed per Figures 1 and 2 of SB 62B35-13.If cracks are evident during any Requirement 2 inspection, before further flight, replace the disc in accordance with the applicable maintenance manual, and resume the Requirement 2 inspections.Note: FAA AD 81-06-53 R1 Amdt 39-4303 refers. |
| Compliance: | 1. Unless already accomplished, before 30 April 2005.2. Before the accumulation of 120 flight hours since new or the last inspection. Inspect thereafter at intervals not to exceed 120 flight hours. |
| This Airworthiness Directive becomes effective on 14 April 2005. | |
| Background: | The FAA requires certain actions to prevent operation with cracked rotor brake discs. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
2 March 2005