Embraer ERJ-170 Series Aeroplanes
Embraer ERJ-170 Series Aeroplanes
Embraer ERJ-170 Series Aeroplanes
| AD/ERJ-170/13 | Ram Air Turbine Bearings | 4/2008 |
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| Applicability: | Embraer ERJ-170 aircraft models equipped with Ram Air Turbine (RAT) part number (P/N) 1703781 and serial numbers (S/N) 0005 and 0101 through 0419 inclusive. |
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| Requirement: | 1. Verify the installed S/N of the RAT.2. If the RAT has S/N 0110, 0150, 0255 or 0354 through 0419, reidentify the RAT P/N from 1703781 to 1703781A.3. If RAT has S/N 0005, 0101 through 0109, 0111 thru 0149, 0151 through 0254 or 0256 through 0353, replace the RAT with a RAT bearing P/N 1703781A.The detailed instructions and procedures to accomplish this AD are described in Embraer Service Bulletin No. 170-24-0041 original issue, or later revisions approved by the ANAC.Note: AGÊNCIA NACIONAL DE AVIAÇÃO CIVIL - BRAZIL AD 2007-12-01 dated 24 January 2008 refers. |
| Compliance: | 1. Within the next 1300 flight hours or 6 months after the effective date of this AD, whichever occurs first.2. At the time of verification as detailed in Requirement 1 of this AD.3. Within the next 6000 flight hours or 26 months after the effective date of this AD, whichever occurs first. |
| This Airworthiness Directive becomes effective on 10 April 2008. | |
| Background: | It has been found the occurrence of a failed bearing within the RAT generator may lead to a RAT generator failure. The RAT generator was designed to provide emergency electrical power to essential systems in case of loss of all other sources of aircraft AC electrical power. |
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David Punshon
Delegate of the Civil Aviation Safety Authority
21 February 2008