{"id":"F2006B01863","name":"AD/A320/115 - Flight Crew Seats","slug":"ad-a320-115-flight-crew-seats","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41059,"registerId":"commonwealth-F2006B01863-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.","sortOrder":0},{"sectionNumber":"AD/A320/115 Flight Crew Seats 3/2001","sectionType":"part","heading":"AD/A320/115 Flight Crew Seats 3/2001","content":"# AD/A320/115 Flight Crew Seats 3/2001\n\nApplicability: All model A319, A320 and A321 aircraft equipped with powered cockpit seats manufactured by Sogerma with:\n\n    Part Number (P/N) TAAI2-13PE00-01, TAAI2-13PE01-01, TAAI2-33PE00-01,\n\nTAAI2-33PE01-01 for Captain seats, and\n\n    P/N TAAI2-13CE00-01, TAAI2-13CE01-01, TAAI2-33CE00-01, TAAI2-\n\n33CE01-01 for First Officer seats.\n\nand fitted with P/N 4136290003 Labinal actuator.\n\nNote 1: The involved seats have a serial number below S/N 657.\n\nNote 2: Such equipped seats are identified by a label close to the identification plate with “Seat equipped with “Labinal” actuator” printed on it and without any P/N indication.\n\nRequirement: Remove P/N 4136290003 Labinal actuators and replace them by P/N 4136290004 or 4136290005 Labinal actuators or P/N 6147-6 Aviac actuators in accordance with Sogerma Service Bulletin TAAI2-25-402, Revision 1.\n\nNote: DGAC AD 2000-524(B) refers.\n\nCompliance: Within six months from 22 March 2001.\n\nThis Airworthiness Directive becomes effective on 22 March 2001.","sortOrder":1}],"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":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope - addressing a specific unsafe condition in particular flight crew seats. There is no evidence of scope creep; it targets exactly the safety issue identified (faulty Labinal actuators) without expanding into unrelated seat modifications or broader aircraft systems."},"complexity_factors":["Single, specific technical requirement with clear part number identification","Limited applicability scope (three aircraft models, one seat manufacturer, specific serial numbers)","No nested exceptions or conditional logic - straightforward replacement mandate","Only one cross-reference (to French aviation authority DGAC AD 2000-524(B))","Clear compliance deadline with no alternative timelines or escalations","Short document length (approximately 250 words)"],"plain_english_summary":"CASA has ordered operators of Airbus A319/A320/A321 with Sogerma pilot seats using Labinal actuator P/N 4136290003 to replace the faulty actuators within six months of 22 March 2001. Affected seats are identified by a \"Labinal\" label and serial numbers below 657; replacements must follow Sogerma SB TAAI2‑25‑402 (Labinal P/N 4136290004/4136290005 or Aviac P/N 6147‑6)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains narrowly focused on correcting an identified unsafe condition by replacing a specific actuator model on a defined set of Sogerma-powered cockpit seats on A319/A320/A321 aircraft. There is no indication in the text that the requirement expanded beyond that original safety-focused purpose; it prescribes a single, bounded corrective action, references the service bulletin that specifies the procedure, and sets a clear compliance deadline."},"complexity_factors":["Short, single-subject airworthiness directive with limited cross-referencing","Specific lists of affected seat part numbers for Captain and First Officer seats (Applicability)","Serial-number cutoff (seats with S/N below 657) narrowing applicability (Note 1)","Identification method relying on a label near the identification plate (Note 2)","Mandated replacement limited to three approved replacement part numbers (Requirement)","Mandatory compliance with an external service bulletin (Sogerma TAAI2-25-402, Rev 1)","Fixed compliance timeframe (six months from 22 March 2001) (Compliance)"],"plain_english_summary":"**What this directive does (mechanically)\n\n- It requires operators to remove a specific model of powered cockpit seat actuator (Labinal part number 4136290003) and replace it with an approved replacement (Labinal P/N 4136290004 or 4136290005, or Aviac P/N 6147-6). (Requirement)\n- The replacement must be done in accordance with the Sogerma Service Bulletin TAAI2-25-402, Revision 1. (Requirement)\n- The work must be completed within six months from 22 March 2001. (Compliance)\n\nWho is affected\n\n- Airlines, operators and maintenance organisations that operate Airbus A319, A320 or A321 aircraft fitted with Sogerma powered cockpit seats of the listed part numbers for Captain and First Officer seats (see Applicability).\n- Only seats with a serial number below S/N 657 and fitted with actuator P/N 4136290003 are covered. Such seats can be identified by a nearby label that states “Seat equipped with “Labinal” actuator” and that lacks a P/N on that label. (Applicability, Notes)\n\nWhy it matters\n\n- The directive is issued under CASA’s airworthiness powers to correct an unsafe condition. It mandates a specific hardware change to remove the identified actuator model and fit approved replacements to restore the seat’s required performance and safety.\n\nPractical effects and implementation mechanics\n\n- Who pays: the aircraft operator pays for parts, labour and any out-of-service time. (Requirement, Compliance)\n- Who decides operationally: the CASA delegate issued the requirement; the operator decides scheduling and engages maintenance providers to carry out the replacement in accordance with the Sogerma service bulletin. (Preface, Requirement)\n- What must change in behaviour: operators must inspect their fleets to identify affected seats (by part number, serial number and label), order approved replacement actuators, and have maintenance organisations perform the replacement and record it in the aircraft maintenance logbooks. (Applicability, Requirement)\n- Timing constraint: all work must be done within six months of 22 March 2001, creating a short planning horizon for ordering parts and scheduling maintenance. (Compliance)\n\nCosts, incentives, trade-offs and risks\n\n- Direct costs: replacement actuators and installation labour, plus aircraft downtime while work is done. Those costs fall to operators and potentially to third-party maintenance providers that carry out the work under contract. (Requirement, Compliance)\n- Supply and scheduling risk: a firm deadline can concentrate demand for the approved parts in a short window, which may raise lead times or prices if supply is limited. The directive requires specific part numbers, so operators can only use the listed alternatives unless an authorised deviation is obtained. (Requirement)\n- Competition and suppliers: the directive names two Labinal part numbers and an Aviac part number as acceptable replacements. That limits replacements to those approved parts but does allow an element of supplier choice between those options. (Requirement)\n- Implementation risk: work must follow the Sogerma service bulletin. Inadequate compliance with the bulletin or incorrect installations could leave the unsafe condition unresolved; operators and maintenance organisations carry the compliance responsibility. (Requirement)\n- Record-keeping and certification: operators must record the modifications as required by airworthiness regulations; this imposes administrative burden but preserves the continuing airworthiness record. (Compliance)\n\nConcentrated benefits and diffuse costs\n\n- The safety benefit is concentrated (directly protects flight crew seats on affected aircraft) while costs are concentrated on the fleet operators who must buy parts and perform the work. There is a transfer of commercial benefit to the approved part suppliers because demand for the approved actuators is created by the directive. (Applicability, Requirement)\n\nNet effect summary\n\n- Mechanically straightforward: identify affected seats, remove the specified Labinal actuator, fit an approved replacement, and record the work within the six-month timeframe. The directive enforces a mandatory hardware upgrade to address an identified unsafe condition; it imposes direct compliance costs on operators, requires adherence to a specific service bulletin, and constrains replacement to listed part numbers. (Applicability, Requirement, Compliance)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-115-flight-crew-seats","history":"/api/acts/ad-a320-115-flight-crew-seats/history","analysis":"/api/acts/ad-a320-115-flight-crew-seats/analysis","conflicts":"/api/acts/ad-a320-115-flight-crew-seats/conflicts","importantCases":"/api/acts/ad-a320-115-flight-crew-seats/important-cases","documents":"/api/acts/ad-a320-115-flight-crew-seats/documents"}}