{"id":"F2008L02664","name":"AD/EMB-145/8 - Fuel Quantity Indication System Wiring Harness","slug":"ad-emb-145-8-fuel-quantity-indication-system-wiring-harness","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74701,"registerId":"commonwealth-F2008L02664-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Embraer EMB-135 and EMB-145 Series Aerop","sectionType":"division","heading":"Embraer EMB-135 and EMB-145 Series Aeroplanes","content":"### Embraer EMB-135 and EMB-145 Series Aeroplanes\n\n| AD/EMB-145/8 | Fuel Quantity IndicationSystem Wiring Harness | 8/2008 |\n| ------------ | --------------------------------------------- | ------ |\n\n| Applicability: | EMB-145EP, EMB-145ER and EMB-145EU model aircraft.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| 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).                                                                                                                                                                                                                                                                                                                                |\n|                | 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.\" |\n|                | 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.                                                                                                                                                                                                                                                        |\n|                | Note 2: ANAC AD 2006-03-01R1 refers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n| 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).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |\n|                | For Requirement 2 - Before further flight after the Requirement 1 inspection.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |\n|                | This Airworthiness Directive becomes effective on 31 July 2008.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n\n| 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. |\n| ----------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n16 June 2008","sortOrder":0},{"sectionNumber":"AD/EMB-145/8","sectionType":"part","heading":"AD/EMB-145/8","content":"## AD/EMB-145/8","sortOrder":1},{"sectionNumber":"Fuel Quantity IndicationSystem Wiring Ha","sectionType":"part","heading":"Fuel Quantity IndicationSystem Wiring Harness","content":"## Fuel Quantity Indication  \nSystem Wiring Harness","sortOrder":2},{"sectionNumber":"8/2008","sectionType":"part","heading":"8/2008","content":"## 8/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope applies specifically to EMB-145EP, EMB-145ER and EMB-145EU models and mirrors the referenced ANAC directive (ANAC AD 2006-03-01R1). The instrument confines obligations to inspection and conditional rerouting per Embraer SB 145-28-0025 (Requirement 1–2; Note 2) and does not expand applicability beyond those models or impose additional actions beyond the reroute and securing requirement."},"complexity_factors":["Limited technical scope: visual inspection (GVI) and, if needed, mechanical rerouting/installation of a tie-down strap (Requirement 1–2).","Defined compliance timing: inspection within 5,000 hours from 19 April 2006 and reroute before further flight (Compliance).","References manufacturer Service Bulletin 145-28-0025 and requires later revisions only if approved by ANAC, adding regulator linkage and change-control (Requirement 1).","Specified part number for corrective action (tie-down strap P/N MS3367-1-9X), requiring procurement and fitment by operators (Requirement 2).","Inspection definition may require access panel removal, stands or mirrors and normal lighting—practical maintenance effort varies by aircraft condition (Note 1).","Potential safety consequence (risk of ignition source near fuel tanks) raises urgency but does not mandate structural modification beyond rerouting (Background)."],"plain_english_summary":"Requires operators of Embraer EMB-145EP/ER/EU aeroplanes to carry out a general visual inspection of the Fuel Quantity Indication System (FQIS) and DC fuel pump wiring harnesses for attachment and segregation. If chafing or inadequate separation is possible, the DC fuel pump harness must be rerouted and secured with a specified tie-down strap per Embraer service instructions approved by ANAC. Inspection must occur within 5,000 flight hours from 19 April 2006; any required rerouting must be done before further flight."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific wiring segregation issue on specific Embraer aircraft models. The directive does not expand beyond the original safety concern identified by ANAC regarding fuel system ignition sources."},"complexity_factors":["Single, discrete safety issue addressed with straightforward two-step compliance (inspect, then fix if needed)","Only 3 specific aircraft models affected (narrow applicability)","Clear compliance deadlines (5,000 hours for inspection, before next flight for any required repair)","One external technical reference (Embraer Service Bulletin 145-28-0025) with defined approval pathway (ANAC-approved revisions)","Single defined term (General Visual Inspection) with explicit explanatory note","No nested exceptions, conditional logic, or cross-references to other legislation beyond the originating Brazilian AD"],"plain_english_summary":"This AD requires operators of specified Embraer EMB-145EP/ER/EU jets to inspect wiring near the fuel tanks for chafing and, if necessary, reroute and secure the DC fuel pump harness before further flight. It targets a potential spark/ignition risk from rubbed wiring adjacent to tanks — a mandatory safety action for affected Australian operators to prevent in-flight fires or explosions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emb-145-8-fuel-quantity-indication-system-wiring-harness","history":"/api/acts/ad-emb-145-8-fuel-quantity-indication-system-wiring-harness/history","analysis":"/api/acts/ad-emb-145-8-fuel-quantity-indication-system-wiring-harness/analysis","conflicts":"/api/acts/ad-emb-145-8-fuel-quantity-indication-system-wiring-harness/conflicts","importantCases":"/api/acts/ad-emb-145-8-fuel-quantity-indication-system-wiring-harness/important-cases","documents":"/api/acts/ad-emb-145-8-fuel-quantity-indication-system-wiring-harness/documents"}}