{"id":"F2007L04234","name":"AD/A320/209 - Cargo Compartment Fire Extinguisher Wiring","slug":"ad-a320-209-cargo-compartment-fire-extinguisher-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":70446,"registerId":"commonwealth-F2007L04234-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A319, A320 and A321 Ser","sectionType":"division","heading":"Airbus Industrie A319, A320 and A321 Series Aeroplanes","content":"### Airbus Industrie A319, A320 and A321 Series Aeroplanes\n\n| AD/A320/209 | Cargo Compartment Fire Extinguisher Wiring | 12/2007 |\n| ----------- | ------------------------------------------ | ------- |\n\n| Applicability: | Airbus A318, A319, A320 and A321 aircraft, all models, all serial numbers which were delivered before 28 February 2007 and fitted with a cargo compartment fire extinguisher bottle installed during production, or whilst in service, in accordance with an Airbus Service Bulletin (SB), except aircraft on which Maintenance Review Board Report (MRBR) task 26.23.00/03 or 26.23.00/07 has been performed. |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Perform an inspection and continuity check of the cargo firing circuit continuity, in accordance with Airbus SB A320-26A1068 dated 19 March 2007 or later revision approved by the European Aviation Safety Agency (EASA).                                                                                                                                                                                  |\n|                | 2. Rectify any discrepancies found during the Requirement 1 inspection and check.                                                                                                                                                                                                                                                                                                                              |\n|                | Accomplishment of MRBR task 26.23.00/03 or 26.23.00/07 is an acceptable alternative method of compliance with the requirements of this Directive.                                                                                                                                                                                                                                                              |\n|                | Note: EASA AD 2007-0249 refers.                                                                                                                                                                                                                                                                                                                                                                                |\n| Compliance:    | For Requirement 1 - Within the next 600 hours time in service after the effective date of this Directive.                                                                                                                                                                                                                                                                                                      |\n|                | For Requirement 2 - Before the next flight after the Requirement 1 inspection and check.                                                                                                                                                                                                                                                                                                                       |\n|                | This Airworthiness Directive becomes effective on 22 November 2007.                                                                                                                                                                                                                                                                                                                                            |\n| Background:    | The EASA has advised that during a planned maintenance visit on one A320 aircraft, a cross connection of the fire extinguishing circuit system was identified. In case of fire, this cross connection will activate (discharge) the wrong forward or aft cargo compartment fire extinguisher bottle.Failure to activate the correct bottle when required is classified as potentially catastrophic.            |\n\n|     | For the reasons described above, this Directive requires a one-time inspection and check of the cargo firing circuit continuity to confirm the correct connection of the dedicated wires between the discharge pushbutton switches and the relevant cargo bottle. |\n| --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n2 October 2007","sortOrder":0},{"sectionNumber":"AD/A320/209","sectionType":"part","heading":"AD/A320/209","content":"## AD/A320/209","sortOrder":1},{"sectionNumber":"Cargo Compartment Fire Extinguisher Wiri","sectionType":"part","heading":"Cargo Compartment Fire Extinguisher Wiring","content":"## Cargo Compartment Fire Extinguisher Wiring","sortOrder":2},{"sectionNumber":"12/2007","sectionType":"part","heading":"12/2007","content":"## 12/2007","sortOrder":3}],"analysis":{"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 is a standard, targeted Airworthiness Directive addressing a specific wiring defect identified by the manufacturer and European regulators. The scope remains precisely limited to the identified safety risk in the cargo fire extinguisher system of specific Airbus aircraft. There is no evidence of scope creep or expansion beyond the original safety purpose."},"complexity_factors":["Single, discrete safety issue with clear mechanical remedy","Limited applicability criteria (specific aircraft models, delivery dates, and equipment configurations)","Straightforward two-step compliance requirement (inspect, then rectify if needed)","Single cross-reference to European Aviation Safety Agency (EASA) AD 2007-0249","One alternative method of compliance explicitly stated (completion of specific MRBR tasks)","No nested definitions, no interpretive provisions, no delegated legislative powers","Temporal compliance window is simple (600 hours time-in-service, or before next flight for rectification)"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and testing of cargo-hold fire-extinguisher wiring on Airbus A318/A319/A320/A321 aircraft delivered before 28 Feb 2007 and fitted with cargo extinguishers. It ensures cockpit fire buttons activate the correct bottles; discrepancies must be rectified before further flight. Compliance is required within 600 flight hours of 22 Nov 2007, unless specific MRBR maintenance tasks have already been completed."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope aligns with the instrument's stated purpose: it targets aircraft delivered before 28 Feb 2007 with a cargo extinguisher bottle to confirm correct wiring after an identified cross‑connection. The AD provides an alternative compliance route via specified MRBR tasks but does not broaden or narrow the population beyond that described."},"complexity_factors":["Targeted applicability: only aircraft delivered before 28 Feb 2007 with a cargo extinguisher bottle installed (adds fleet‑filtering but requires records checks) (Applicability).","Technical check: requires an electrical continuity inspection of the cargo firing circuit, which needs qualified maintenance personnel and test equipment (Requirement 1).","Immediate remediation obligation: any discrepancies must be rectified before next flight, creating potential scheduling and AOG (aircraft on ground) pressure (Requirement 2 / Compliance).","Time window: one‑time compliance within 600 flight hours imposes a finite planning horizon (Compliance).","Document reliance: mandates work in accordance with Airbus SB A320‑26A1068 or later EASA‑approved revision, so operators must obtain and follow that SB (Requirement 1).","Alternative compliance path: accomplishment of MRBR task 26.23.00/03 or 26.23.00/07 is acceptable, requiring cross‑reference to maintenance program records (Requirement).","Safety criticality: failure to comply addresses a 'potentially catastrophic' failure mode, increasing regulatory urgency and scrutiny (Background)."],"plain_english_summary":"Requires a one‑time inspection and electrical continuity check of the cargo fire‑extinguisher wiring on Airbus A318/A319/A320/A321 aircraft delivered before 28 February 2007 that have a cargo extinguisher bottle fitted. Operators must repair any wiring cross‑connections found before the next flight. The inspection must follow Airbus Service Bulletin A320‑26A1068 (or later EASA‑approved revision) and be completed within 600 flight hours. Owners/operators pay for and schedule the work to meet the deadline."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-209-cargo-compartment-fire-extinguisher-wiring","history":"/api/acts/ad-a320-209-cargo-compartment-fire-extinguisher-wiring/history","analysis":"/api/acts/ad-a320-209-cargo-compartment-fire-extinguisher-wiring/analysis","conflicts":"/api/acts/ad-a320-209-cargo-compartment-fire-extinguisher-wiring/conflicts","importantCases":"/api/acts/ad-a320-209-cargo-compartment-fire-extinguisher-wiring/important-cases","documents":"/api/acts/ad-a320-209-cargo-compartment-fire-extinguisher-wiring/documents"}}