Federal Register of Legislation - Australian Government

Primary content

AD/ERJ-170/10 Airworthiness Directives/Pt 105 — Aircraft as made
Firewall Hydraulic Shutoff Valves
Administered by: DOTARS
Exempt from sunsetting by the Legislative Instruments Act 2003 s 54(2) item 9
Registered 17 May 2007
Tabling HistoryDate
Tabled HR21-May-2007
Tabled Senate12-Jun-2007
Date of repeal 25 Oct 2007
Repealed by AD/ERJ-170/10 Amdt 1 - Firewall Hydraulic Shutoff Valves



For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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


Firewall Hydraulic Shutoff Valves




Embraer ERJ-170( ) aircraft fitted with firewall hydraulic shutoff valves part number (P/N) 975287-3.


Perform an operational check in accordance with Embraer Service Bulletin No.
170-29-0013 original issue, or further ANAC approved revisions, for proper operation of the firewall hydraulic shutoff valves P/N975287-3.  If necessary, replace the faulty hydraulic shutoff valve with another one bearing the same P/N.

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.”

Note:   Agência Nacional De Aviação Civil - Brazil Brazilian Airworthiness Directive AD No. 2007-02-01 dated 27 Feb 2007 refers.


Within the next 600 flight hours after the effective date of this AD, and thereafter at intervals that do not exceed 600 flight hours.


This Airworthiness Directive becomes effective on 7 June 2007.


Periodic operational check of the firewall hydraulic shutoff valves, made during routine maintenance, has revealed that the failure rate of that component is significantly higher than expected.  Such a dormant failure, when combined with further possible failures, such as engine fire, may lead to an unacceptable reduction of safety margins.

David Punshon
Delegate of the Civil Aviation Safety Authority

24 April 2007