{"id":"F2008L00260","name":"AD/B767/233 - Fuel Quantity Indicator System Wire Harness","slug":"ad-b767-233-fuel-quantity-indicator-system-wire-harness","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":72488,"registerId":"commonwealth-F2008L00260-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 767 Series Aeroplanes","sectionType":"division","heading":"Boeing 767 Series Aeroplanes","content":"### Boeing 767 Series Aeroplanes\n\n| AD/B767/233 | Fuel Quantity Indicator System Wire Harness | 2/2008 |\n| ----------- | ------------------------------------------- | ------ |\n\n| Applicability: | Boeing Model 767-200, -300 and -300F series aeroplanes identified in Boeing Special Attention Service Bulletin (SASB) 767-28-0087 dated 5 February 2007.                                                                                                              |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Accomplish the following in accordance with SASB 767-28-0087:                                                                                                                                                                                                      |\n|                | a. A detailed inspection of each fuel quantity indication system (FQIS) wire harness connector for corrosion of the shield-to-backshell connection, corrosion on the ground jumper and damage to the ground jumper.                                                   |\n|                | b. A loop resistance test of each FQIS wire harness.                                                                                                                                                                                                                  |\n|                | 2. If any anomalies are noted during the Requirement 1.a inspection or 1.b test, carry out all applicable related investigative and corrective actions in by accomplishing all the actions specified in the Accomplishment Instructions of SASB 767-28- 0087.         |\n|                | Note 1: SASB 767-28-0087 refers to Cinch Service Bulletin CN1156-28-02 as an additional source of service information for installing a backshell and assembly upgrade kit.                                                                                            |\n|                | Later revisions of the above SASB, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2007-23-09, are considered acceptable for compliance with the equivalent Requirements of this Directive. |\n|                | Note 2: FAA AD 2007-23-09 Amdt 39-15255 refers.                                                                                                                                                                                                                       |\n| Compliance:    | For Requirement 1 - Within 48 months after the effective date of this Directive.                                                                                                                                                                                      |\n|                | For Requirement 2 - Before further flight after completing the Requirement 1 inspection or test.                                                                                                                                                                      |\n|                | This Airworthiness Directive becomes effective on 14 February 2008.                                                                                                                                                                                                   |\n\n| Background: | The FAA has advised of reports of corrosion of the out-tank wire harness of the spar connector backshell for the FQIS which could prevent correct grounding of the lightning shield and result in total loss of the electrical grounding between the lightning shield and the airplane structure. This condition, in combination with flammable fuel vapours, could result in fuel tank explosions and consequent loss of the aeroplane. |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|             | This Directive requires a one-time inspection of each FQIS wire harness connector for corrosion of the shield-to-backshell connection, corrosion on the ground jumper and damage to the ground jumper; together with a loop resistance test of each FQIS wire harness and related investigative and, if necessary, corrective actions.                                                                                                   |\n\n![](image.001.png)  \nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n10 December 2007","sortOrder":0},{"sectionNumber":"AD/B767/233","sectionType":"part","heading":"AD/B767/233","content":"## AD/B767/233","sortOrder":1},{"sectionNumber":"Fuel Quantity Indicator System Wire Harn","sectionType":"part","heading":"Fuel Quantity Indicator System Wire Harness","content":"## Fuel Quantity Indicator System Wire Harness","sortOrder":2},{"sectionNumber":"2/2008","sectionType":"part","heading":"2/2008","content":"## 2/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The Directive implements the inspection, test and corrective-action requirements described in FAA AD 2007-23-09 and relies on Boeing SASB 767-28-0087 (with Cinch SB as additional information). It accepts later SASB revisions approved by the FAA as an AMOC, and does not expand applicability beyond the identified Boeing 767 models; therefore the scope has not been broadened from the FAA-referenced requirements (see \"Later revisions...\" and Note 2)."},"complexity_factors":["Technical inspection and electrical loop-resistance testing required (Requirement 1.a–1.b) — demands technical knowledge and measurement equipment.","Conditional investigative and corrective work if anomalies are found (Requirement 2) — variable scope of repairs and parts replacement increases operational uncertainty.","Reliance on external service information: Boeing SASB 767-28-0087 and Cinch SB CN1156-28-02 referenced as sources (Note 1) — cross-referencing adds document management and vendor dependence.","Acceptance of later SASB revisions approved by the FAA as an AMOC (\"Later revisions...\") — introduces dependence on FAA approvals and potential administrative coordination.","Applicability confined to identified 767-200/-300/-300F aircraft (Applicability) — requires operators to audit fleet records to determine coverage.","Staged compliance timing: inspection within 48 months; corrective actions must be completed before further flight (Compliance) — scheduling and possible ground-time impacts.","High-safety risk context (Background) — elevated enforcement priority may tighten compliance scrutiny and limit operational discretion.","Fixed effective date (becomes effective on 14 February 2008) — creates a clear regulatory start for compliance planning."],"plain_english_summary":"This Directive requires operators of specified Boeing 767-200, -300 and -300F aeroplanes identified in Boeing SASB 767-28-0087 to carry out a one-time detailed inspection of each fuel-quantity-indicator-system (FQIS) wire-harness connector and a loop-resistance test, and to do any investigative or corrective actions if anomalies are found. Inspections must be done within 48 months and any required corrective action completed before further flight. Operators bear the inspection and repair costs; CASA enforces the Directive and accepts FAA‑approved SASB revisions as alternate compliance."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope. It addresses a specific safety issue (FQIS wire harness corrosion) on specific aircraft models (Boeing 767 series) with specific corrective actions. There is no evidence of scope creep; the directive remains tightly focused on the original safety concern identified by the FAA regarding lightning protection in fuel tanks."},"complexity_factors":["Single, clearly defined applicability (specific Boeing 767 models listed in one service bulletin)","Two main requirements with straightforward sub-requirements (1.a and 1.b)","Clear compliance timeline (48 months for inspection, before next flight for repairs)","Minimal cross-referencing (only to one Boeing service bulletin and one FAA AD)","No nested conditional logic or exceptions to exceptions","Background section clearly explains the safety rationale","Approximately 8 defined/referenced documents (SASB, FAA AD, Cinch Service Bulletin, AMOC)","Total length is approximately 300 words of substantive content"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and electrical testing of Fuel Quantity Indicator System (FQIS) wire harnesses on certain Boeing 767-200/300/300F aircraft (per a Feb 2007 Boeing service bulletin) to detect corrosion or damage where lightning protection bonds attach. Any defects must be repaired before flight. It addresses a lightning-grounding failure risk that could ignite fuel vapours; inspections were required within 48 months and the AD took effect 14 February 2008."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-233-fuel-quantity-indicator-system-wire-harness","history":"/api/acts/ad-b767-233-fuel-quantity-indicator-system-wire-harness/history","analysis":"/api/acts/ad-b767-233-fuel-quantity-indicator-system-wire-harness/analysis","conflicts":"/api/acts/ad-b767-233-fuel-quantity-indicator-system-wire-harness/conflicts","importantCases":"/api/acts/ad-b767-233-fuel-quantity-indicator-system-wire-harness/important-cases","documents":"/api/acts/ad-b767-233-fuel-quantity-indicator-system-wire-harness/documents"}}