{"id":"F2006L03812","name":"AD/PC-12/49 - Executive Passenger Seats","slug":"ad-pc-12-49-executive-passenger-seats","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":137674,"registerId":"commonwealth-F2006L03812-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Pilatus PC-12 Series Aeroplanes","sectionType":"division","heading":"Pilatus PC-12 Series Aeroplanes","content":"### Pilatus PC-12 Series Aeroplanes\n\n| AD/PC-12/49 | Executive Passenger Seats | 13/2006 |\n| ----------- | ------------------------- | ------- |\n\n| Applicability: | All Model PC-12 and PC-12/45 aircraft, MSN 101 through 683; equipped with executive passenger seats Model Number 4006, manufactured by DeCrane Aircraft Seating Company Inc., Vendor Part Number 403150-1 or 403150-2 with serial numbers identified in DeCrane Aircraft Service Bulletin SB05147B.                                                                                                                                                                                                                                                      |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Inspect to identify the vendor part number of the seat legs and the serial number of the executive seat in accordance with paragraph 3 and 4 of Pilatus PC-12 Service Bulletin No. 25-032.If the inspection reveals any seat legs with a vendor part number, and executive seats with a serial number which correspond with the data in DeCrane Aircraft Service Bulletin SB05147B are discovered, before further flight, replace the affected seat legs with new seat legs Vendor Part Number 431005-17 and 431005-18.Note: FOCA AD HB-2006-444 refers. |\n| Compliance:    | Unless already accomplished, before 28 February 2007.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |\n|                | This Airworthiness Directive becomes effective on 21 December 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n| Background:    | The legs of some executive seats were found to have been manufactured using material that deviates from the approved design data. As a consequence, the affected seat legs may not perform as intended under emergency landing conditions.                                                                                                                                                                                                                                                                                                               |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n9 November 2006","sortOrder":0},{"sectionNumber":"AD/PC-12/49","sectionType":"part","heading":"AD/PC-12/49","content":"## AD/PC-12/49","sortOrder":1},{"sectionNumber":"Executive Passenger Seats","sectionType":"part","heading":"Executive Passenger Seats","content":"## Executive Passenger Seats","sortOrder":2},{"sectionNumber":"13/2006","sectionType":"part","heading":"13/2006","content":"## 13/2006","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific manufacturing defect in specific seat components. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 250 words)","Only 4 defined applicability criteria (aircraft model, serial number range, seat manufacturer, specific part/serial numbers)","Single straightforward requirement: inspect, and if found, replace","No nested exceptions or conditional logic — binary outcome (affected or not affected)","Clear compliance deadline with no alternative methods of compliance mentioned","Minimal cross-referencing (only one referenced Service Bulletin and one foreign AD for information)"],"plain_english_summary":"This AD requires operators of Pilatus PC-12/45 (S/N 101–683) to inspect for certain DeCrane executive seats whose seat legs were made from incorrect material and, if found, replace those legs before further flight.  \n\nIt’s mandatory because the defective legs could fail in an emergency landing, risking serious injury or death to passengers. Deadline: before 28 Feb 2007 (unless already done)."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No. The AD's scope is the set of PC-12/PC-12/45 airframes (MSN 101–683) equipped with DeCrane executive seats Model 4006 and only those seat legs/serial numbers identified in DeCrane SB05147B. It mandates inspection and replacement of specified parts and sets a compliance date, consistent with the stated safety purpose (Applicability; Requirement; Compliance; Background)."},"complexity_factors":["Narrow applicability tied to airframe serial numbers and a specific seat model and serials (Applicability).","Dependence on cross-referencing two vendor/service bulletins (Pilatus SB No. 25-032 and DeCrane SB05147B) to identify affected parts (Requirement).","A mandatory physical inspection of installed parts to determine conformity (Requirement).","A mandatory replacement obligation before further flight for any identified affected parts, creating immediate operational impact (Requirement).","Specified replacement part numbers must be used (Vendor P/N 431005-17 and 431005-18) (Requirement).","Fixed compliance deadline for operators to complete the action (Compliance).","Safety-critical rationale based on material deviation affecting emergency landing performance (Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of Pilatus PC-12 and PC-12/45 (MSN 101–683) fitted with DeCrane executive seats Model 4006 to inspect seat-leg vendor part numbers and seat serial numbers per Pilatus Service Bulletin 25-032. If the parts/serials match those listed in DeCrane Service Bulletin SB05147B, the affected seat legs must be replaced with vendor part numbers 431005-17 or 431005-18 before further flight. The AD responds to discovered material deviations that could reduce seat performance in an emergency landing."},"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-pc-12-49-executive-passenger-seats","history":"/api/acts/ad-pc-12-49-executive-passenger-seats/history","analysis":"/api/acts/ad-pc-12-49-executive-passenger-seats/analysis","conflicts":"/api/acts/ad-pc-12-49-executive-passenger-seats/conflicts","importantCases":"/api/acts/ad-pc-12-49-executive-passenger-seats/important-cases","documents":"/api/acts/ad-pc-12-49-executive-passenger-seats/documents"}}