AD/ERJ-170/10 Amdt 2 - Firewall Hydraulic Shutoff Valves (Cth)

AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/ERJ-170/10 Amdt 1 and issues the following AD under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Embraer ERJ-170 Series Aeroplanes AD/ERJ-170/10 Amdt 2 Firewall Hydraulic Shutoff Valves 10/2009

Applicability: Embraer ERJ-170( ) aircraft fitted with firewall hydraulic shutoff valves (FWSOV) part number (P/N) 975287-3 or P/N 975287-5. Requirement: Perform an operational check in accordance with Embraer Service Bulletin No. 170-29-0013 original issue 12 December 2006, or further ANAC approved revisions, for proper operation of the firewall hydraulic shutoff valves P/N975287-3 or P/N 975287-5. If necessary, replace the faulty hydraulic shutoff valve with a serviceable FWSOV.

For the purpose of this AD, an operational check is: "A task to determine that an item is fulfilling its intended purpose. The check does not require quantitative tolerances. This is a failure finding task."

For the purpose of this AD, a suitable FWSOV is a firewall hydraulic shutoff valve P/N 975287-3 or 975287-5 that has passed the operational check described in Embraer SB No. 170-29-0013 or either the replacement of these valves by others bearing a new P/N.