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Division Embraer ERJ-170 Series Aeroplanes - AD/ERJ-170/3 Amdt 1 - Air Data Smart Probes - Embraer ERJ-170 Series Aeroplanes | Zoe

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AD/ERJ-170/3 Amdt 1 - Air Data Smart Probes

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Embraer ERJ-170 Series Aeroplanes

AD/ERJ-170/3 Amdt 1	Air Data Smart Probes	4/2008 DM

Applicability:	ERJ-170( ) model aeroplanes, equipped with air data smart probes part number (P/N) 2015G2H2H-4( ), 2015G2H2H-5( ), 2015G2H2H-6( ) or 2015G2H2H-7( ).
Requirement:	1. Carry out a detailed inspection of the four "Air Data Smart Probes" drain holes and remove any accumulated moisture in accordance with Embraer Service Bulletin (SB) 170-34-0007, original issue, dated 28 April 2005 or further revisions approved by the Brazilian Agência Nacional de Avição Civil (ANAC).
	Note 1: For the purpose of this Directive, a detailed inspection is defined as: "An intensive examination of a specific item, installation or assembly to detect damage, failure or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate access procedures may be required."
	The optional installation of air data smart probes P/N 2015G2H2H-8( ) in accordance with the procedures detailed in the Embraer SB 170-34-0018 original issue, dated19 September 2006 or further revisions approved by ANAC, constitutes terminal action to the repetitive inspections.
	2. Air data smart probes part number (P/N) 2015G2H2H-4( ), 2015G2H2H-5( ), 2015G2H2H-6( ) or 2015G2H2H-7( ) may not be reinstalled on any aeroplane as a replacement for probe P/N 2015G2H2H-8( ).
	Note 2: ANAC AD 2006-05-05R1 refers.
Compliance:	For Requirement 1 - Either within the next 600 hours time in service (TIS) after the first issue of an Australian Certificate of Airworthiness or within 600 hours TIS after the last inspection in accordance with the original issue of this Directive, which ever occurs first, and thereafter, at intervals that do not exceeds 600 hours TIS until the air data smart probe is replaced by a probe P/N 2015G2H2H-8( ).
	For Requirement 2 - As of the effective date of this Amendment.
	This Amendment becomes effective on 4 April 2008.

Background:	The ANAC has received reports of moisture being found in the pneumatic passage between the pitot port and the pressure sensors in the air data smart probes. That moisture may freeze and block the sensors, causing erroneous information to the Air Data System.