{"id":"F2006B03426","name":"AD/B767/71 Amdt 1 - Inspection of Engine, APU & Cargo Compartment Fire Extinguisher Bottle Cartridges","slug":"ad-b767-71-amdt-1-inspection-of-engine-apu-cargo-compartment-fire-extinguisher-bottle-cartridges","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42967,"registerId":"commonwealth-F2006B03426-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/71 Amdt 1 - Inspection of Engine, APU & Cargo Compartment Fire Extinguisher Bottle Cartridges","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBoeing 767 Series Aeroplanes\n\nAD/B767/71\n\nAmdt 1\n\n  \n\nInspection of Engine, APU & Cargo Compartment Fire Extinguisher Bottle Cartridges\n\n  \n11/93\n\nApplicability: All model 767 aircraft identified in Boeing ASB 767-26A0089 of 22 October 1992.\n\nRequirement: 1. Visually inspect, in accordance with Boeing Alert Service Bulletin 767-26A0089 dated 22 October 1992, the discharge cartridges (squibs) and electrical connectors installed on each fire extinguisher bottle in the auxiliary power unit, lower cargo and engine fire extinguishing systems.\n\nNote 1: The operational tests of the discharge cartridges specified in the Accomplishment Instructions of the service Bulletin are not required to be performed prior to accomplishing the visual inspections.\n\nNote 2: The cross-wiring end-to-end checks required by AD/B767/22 Amdt 2 are not obligatory, following performance of the visual inspection, if the inspection is accomplished one cartridge at a time.\n\n2. If any damage is detected during the visual inspections, then prior to further flight replace the damaged item and perform an operational test of the fire bottle discharge cartridge circuit in accordance with Boeing Alert Service Bulletin 767- 26A0089 dated 22 October 1992.\n\nNote: FAA AD 93-09-01 Amdt 39-8568 refers.\n\nCompliance: Unless previously accomplished, prior to 30 November 1993.\n\nBackground: This directive is prompted by reports of bent pins in discharge cartridges and damaged electrical connectors on some fire extinguisher bottles. These conditions, although being able to prevent the fire bottle discharging, remain undetected by the Discharge Cartridge Circuit Operational Test. (The damage is believed to result from installation or removal of a shunt plug from the cartridge, shunt plugs were installed to protect the cartridge during maintenance.) The one time inspection of the cartridges and electrical connectors, required by this Directive, is intended to ensure the proper discharge of the fire extinguisher bottle in the event of a fire.\n\nAmendment 1 is issued to clarify the requirement to include inspection of the engine fire extinguisher systems.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 clarifies that the inspection requirement expressly includes engine fire extinguisher systems, expanding the explicit coverage of the directive to those systems (see 'Amendment 1 is issued to clarify...')."},"complexity_factors":["Reference to an external technical document (Boeing Alert Service Bulletin 767‑26A0089) for the inspection procedure","Technical inspection of small components (discharge cartridges/squibs and electrical connectors) requiring maintenance expertise","Conditional operational-test requirement: visual inspection is sufficient unless damage is found (Note 1 / Requirement 1 and 2)","Interaction with prior AD (AD/B767/22 Amdt 2) and an exception when inspections are done one cartridge at a time (Note 2)","One‑time compliance with a fixed deadline (compliance date specified)","Safety‑critical consequence (replacement required before further flight) increases urgency and operational impact","Applicability limited to aircraft identified in the Boeing ASB (narrow fleet scope)"],"plain_english_summary":"_Requires operators of Boeing 767s listed in Boeing Alert Service Bulletin 767‑26A0089 to carry out a one‑time visual inspection of discharge cartridges (squibs) and electrical connectors on APU, lower cargo and engine fire‑extinguisher bottles; damaged items must be replaced and the discharge circuit tested before further flight._\n\nThe measure responds to reports of bent pins and damaged connectors that may not be detected by circuit tests; compliance work and any replacement costs fall to aircraft operators and their maintenance providers."},"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 discrete, time-limited safety directive addressing a specific maintenance issue. Amendment 1 merely clarified the original scope to explicitly include engine fire systems — it did not expand the directive into new operational areas or aircraft systems. The scope remains tightly focused on visual inspection of fire extinguisher cartridges as originally intended."},"complexity_factors":["Single, discrete safety task with clear applicability (specific aircraft model and service bulletin reference)","Only 2 main requirements with straightforward conditional logic (if damage found → replace and test)","3 explanatory notes that simplify rather than complicate compliance","No defined terms section — relies on external Boeing documentation","Short document (approximately 250 words) with minimal cross-referencing (only to FAA AD 93-09-01 and prior AD/B767/22)","Single amendment with simple purpose (clarifying scope to include engines)"],"plain_english_summary":"This CASA Airworthiness Directive mandates a one‑time visual inspection of fire‑extinguisher cartridges (\"squibs\") and their electrical connectors on Boeing 767s (engines, APU, lower cargo) for damage caused during shunt‑plug handling. It affects all Australian operators covered by the Boeing service bulletin and required completion by 30 Nov 1993. Damaged parts must be replaced and systems tested; Amendment 1 clarified engine coverage."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-71-amdt-1-inspection-of-engine-apu-cargo-compartment-fire-extinguisher-bottle-cartridges","history":"/api/acts/ad-b767-71-amdt-1-inspection-of-engine-apu-cargo-compartment-fire-extinguisher-bottle-cartridges/history","analysis":"/api/acts/ad-b767-71-amdt-1-inspection-of-engine-apu-cargo-compartment-fire-extinguisher-bottle-cartridges/analysis","conflicts":"/api/acts/ad-b767-71-amdt-1-inspection-of-engine-apu-cargo-compartment-fire-extinguisher-bottle-cartridges/conflicts","importantCases":"/api/acts/ad-b767-71-amdt-1-inspection-of-engine-apu-cargo-compartment-fire-extinguisher-bottle-cartridges/important-cases","documents":"/api/acts/ad-b767-71-amdt-1-inspection-of-engine-apu-cargo-compartment-fire-extinguisher-bottle-cartridges/documents"}}