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Division Embraer EMB-135 and EMB-145 Series Aerop - AD/EMB-145/8 - Fuel Quantity Indication System Wiring Harness - Embraer EMB-135 and EMB-145 Series Aeroplanes | Zoe

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AD/EMB-145/8 - Fuel Quantity Indication System Wiring Harness

Embraer EMB-135 and EMB-145 Series AeropEmbraer EMB-135 and EMB-145 Series Aeroplanes

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Embraer EMB-135 and EMB-145 Series Aeroplanes

AD/EMB-145/8	Fuel Quantity IndicationSystem Wiring Harness	8/2008

Applicability:	EMB-145EP, EMB-145ER and EMB-145EU model aircraft.
Requirement:	1. Unless already accomplished, carry out a general visual inspection (GVI) of the Fuel Quantity Indication System (FQIS) and DC fuel pump harnesses for attachment conditions and proper segregation from each other in accordance with Embraer Service Bulletin 145-28-0025, original issue, or later revisions approved by the Brazilian Agência Nacional de Aviação Civil (ANAC).
	Note 1: For the purpose of this Directive a general visual inspection (GVI) is: "A visual examination of an interior or exterior area, installation or assembly to detect obvious damage, failure or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight or drop-light, and may require removal or opening of access panels or doors. Stands, ladders or platforms may be required to gain proximity to the area being checked."
	2. If, as a result of the Requirement 1 inspection, it is determined that the possibility exists for any harness chaffing against another harness, the aircraft structure or a mechanical component, reroute the DC Fuel Pump harness W505E by installing a tie down strap part number (P/N) MS3367-1-9X on both sides (LH and RH), according to the detailed instructions and procedures described in SB145-28-0025 or later revisions approved by the ANAC.
	Note 2: ANAC AD 2006-03-01R1 refers.
Compliance:	For Requirement 1 - Within the next 5,000 hours time in service after 19 April 2006 (the effective date of the original issue of ANAC AD 2006-03-01).
	For Requirement 2 - Before further flight after the Requirement 1 inspection.
	This Airworthiness Directive becomes effective on 31 July 2008.

Background:

The ANAC has found that there is a possibility of occurrences of improper segregation and attachments of the FQIS harness from the DC Fuel Pump harness, which may lead to chafing between these harnesses or between some of the harnesses to the aircraft structure or between some of the harnesses to some mechanical component. In any case, a possible ignition source in the vicinity of the fuel tanks may develop.This Directive requires iinspection of the FQIS and DC fuel pump harnesses and, if necessary, rerouting of the DC fuel pump W505E harness.