{"id":"F2005L02374","name":"AD/SEATS/25 - Sicma Aero Seats Reading Light Power Supplies","slug":"ad-seats-25-sicma-aero-seats-reading-light-power-supplies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":36774,"registerId":"commonwealth-F2005L02374-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Seats and Berths","sectionType":"division","heading":"Seats and Berths","content":"### Seats and Berths\n\n| AD/SEATS/25 | Sicma Aero Seats ReadingLight Power Supplies | 10/2005 |\n| ----------- | -------------------------------------------- | ------- |\n\n```html\n

Applicability:

Passenger seats manufactured by Sicma Aero Seats with the following part numbers (P/N):

Single Seats

50692( )-( )
50442( )-( )
50752( )-( )
50402( )-( )
50462( )-( )
50392( )-( )
50452( )-( )
50382( )-( )
50A02( )-( )
50A72( )-( )
50A82( )-( )

Twin Seats

50A71( )-( )
50A81( )-( )
50401( )-( )
50451( )-( )
50391( )-( )

Note 1: These seats are known to be fitted to, but not limited to, the following aircraft series:

Boeing Aeroplanes

Airbus Aeroplanes

747, 767 and 777

A330 and A340

Requirement:

Replace the installed reading light electrical power supply in accordance with Sicma Aero Seat Service Bulletin 50-25-210 dated 27 June 2005.

Note 2: DGAC AD F-2005-135 (EASA Approval 2005-6123) refers.

Compliance:

Before 1 May 2006.

This Airworthiness Directive becomes effective on 29 September 2005.

\n```\n\n| Background: | The French Direction Générale de l’Aviation Civile (DGAC) has received a report of smoke in the passenger compartment following the overheating of a reading light power supply in a Sicma P/N 5039201-4T seat.This Directive requires all suspect power supplies to be replaced to prevent further occurrences of smoke and possible fire in the passenger compartment. |\n| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n18 August 2005","sortOrder":0},{"sectionNumber":"AD/SEATS/25","sectionType":"part","heading":"AD/SEATS/25","content":"## AD/SEATS/25","sortOrder":1},{"sectionNumber":"Sicma Aero Seats ReadingLight Power Supp","sectionType":"part","heading":"Sicma Aero Seats ReadingLight Power Supplies","content":"## Sicma Aero Seats Reading \nLight Power Supplies","sortOrder":2},{"sectionNumber":"10/2005","sectionType":"part","heading":"10/2005","content":"## 10/2005","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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD’s scope matches its stated purpose: replacing suspect reading-light power supplies on the listed Sicma seat P/Ns fitted to specified aircraft series. It does not broaden obligations beyond those seats and the referenced service bulletin; it sets a single compliance deadline and records the DGAC safety report as justification."},"complexity_factors":["Multiple affected part numbers across single and twin seat variants — increases inventory and tracking work (Applicability: P/N list).","Mandated corrective action references an external document: Sicma Service Bulletin 50-25-210 dated 27 June 2005 — operators must obtain and follow that SB (Requirement).","Fixed compliance window and effective date require scheduling fleet outages and parts procurement (Effective on 29 September 2005; Compliance before 1 May 2006).","Applicability note ties seats to multiple aircraft series (Boeing 747/767/777; Airbus A330/A340) but is not strictly limited to them, widening operational scope (Note 1).","Safety rationale derives from a DGAC report of smoke caused by an overheating power supply — creates a clear technical trigger but limited empirical detail (Background).","Cross-reference to foreign authority (DGAC AD F-2005-135 / EASA Approval 2005-6123) introduces multinational regulatory coordination for compliance records (Note 2).","Practical burdens on operators include sourcing replacement modules, access to seats for replacement, and record-keeping to show compliance (implied by Requirement and Compliance)."],"plain_english_summary":"This Airworthiness Directive requires operators to replace the installed reading-light electrical power supply on specific Sicma Aero Seats part numbers by following Sicma Service Bulletin 50-25-210 (dated 27 June 2005). It applies to listed single and twin seat P/Ns fitted to certain Boeing and Airbus types, becomes effective 29 September 2005, and must be complied with before 1 May 2006. The DGAC reported smoke from an overheating power supply; the replacement imposes parts, labour and scheduling costs on aircraft operators to reduce risk of smoke/fire."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific identified defect in specific aircraft seats. The scope remains precisely limited to the original safety concern — overheating reading light power supplies in Sicma Aero Seats — with no expansion beyond this original purpose."},"complexity_factors":["Single, specific technical requirement (replace one component)","Limited applicability — only 16 specific part numbers affected","No conditional logic, exceptions, or nested provisions","Clear compliance deadline (single date, no phased approach)","Short document with straightforward cross-reference to manufacturer service bulletin only","No defined terms section or interpretive provisions"],"plain_english_summary":"This CASA Airworthiness Directive mandates replacement of overheating reading‑light power supplies in Sicma Aero passenger seats (installed on certain Boeing 747/767/777 and Airbus A330/A340 aircraft) to eliminate smoke/fire risk. Operators must carry out the change per Sicma Service Bulletin 50‑25‑210 (27 Jun 2005); work is required before 1 May 2006 (AD effective 29 Sep 2005)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-seats-25-sicma-aero-seats-reading-light-power-supplies","history":"/api/acts/ad-seats-25-sicma-aero-seats-reading-light-power-supplies/history","analysis":"/api/acts/ad-seats-25-sicma-aero-seats-reading-light-power-supplies/analysis","conflicts":"/api/acts/ad-seats-25-sicma-aero-seats-reading-light-power-supplies/conflicts","importantCases":"/api/acts/ad-seats-25-sicma-aero-seats-reading-light-power-supplies/important-cases","documents":"/api/acts/ad-seats-25-sicma-aero-seats-reading-light-power-supplies/documents"}}