{"id":"F2006B03642","name":"AD/BEECH 1900/25 - Emergency Exit Doors","slug":"ad-beech-1900-25-emergency-exit-doors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43232,"registerId":"commonwealth-F2006B03642-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 1900/25 - Emergency Exit Doors","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)  \nBeechcraft 1900 Series Aeroplanes\n\nAD/BEECH 1900/25 Emergency Exit Doors 3/99\n\nApplicability: Models Serial Numbers 1900 UA-2 and UA-3\n\n1900C UB-1 through UB-74, and UC-1 through UC-174\n\n1900C (C-12J) UD-1 through UD-6\n\n1900D UE-1 through UE-271\n\nRequirement: 1. Modify the aircraft emergency exit doors by removing and replacing door mechanism pushrods, trimming the existing turnbuckle clevises, and re-rigging the emergency exit doors, in accordance with Part I of the Accomplishment Instructions section in Raytheon Aircraft Mandatory Service Bulletin (MSB) 2740 Revision 1, issued April 1997, revised June 1997.\n\n2. Install placards on the interior and exterior of the emergency exit doors in accordance with Part II and Part III of the Accomplishment Instructions section in Raytheon Aircraft MSB 2740 Revision 1, issued April 1997, revised June 1997.\n\nNote: FAA AD 98-26-16 Amdt 39-10959 refers.\n\nCompliance: Unless already accomplished, within 600 hours time in service after 25 March 1999.\n\nThis Airworthiness Directive becomes effective on 25 March 1999.\n\nBackground: The emergency exit doors have been found difficult to open in an emergency situation. The actions required by this Directive will ensure passengers and crew will be able to open the emergency exit doors during an aircraft emergency.","sortOrder":0}],"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 is a standard, narrow Airworthiness Directive addressing a specific mechanical defect in specific aircraft models. The scope remains tightly focused on the original safety issue (emergency exit door operability) without expansion into unrelated areas."},"complexity_factors":["Single, specific technical requirement with clear mechanical actions","Only 4 defined serial number ranges in applicability section","Single cross-reference to FAA AD 98-26-16 (informational only)","No nested exceptions or conditional logic — straightforward compliance deadline","Short document (under 300 words) with single purpose","Background and rationale clearly stated in plain language"],"plain_english_summary":"This CASA Airworthiness Directive mandates corrective work on certain Beechcraft 1900-series aeroplanes (specified serial numbers) to fix emergency exit doors that have been difficult to open. A mechanical repair (pushrod replacement, turnbuckle clevis trimming and door re-rigging per the Raytheon service bulletin) and installation of warning/instruction placards are required. Work must be completed within 600 flight hours after 25 March 1999 unless already done."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive implements a corrective safety modification limited to the listed Beechcraft 1900 serial numbers and specific actions in Raytheon MSB 2740 Revision 1. It does not broaden obligations beyond those corrective measures or extend applicability beyond the enumerated aircraft; it sets a compliance deadline and references an FAA AD (Applicability; Requirement; Compliance; Note)."},"complexity_factors":["Technical maintenance work: removal/replacement of pushrods, trimming turnbuckle clevises and re-rigging of doors — requires qualified maintenance personnel and parts (Requirement).","Mandatory installation of interior and exterior placards per MSB instructions — minor additional labour/material (Requirement, Part II/III).","Multiple affected submodels and serial-number ranges require fleet checks to determine applicability (Applicability).","Fixed compliance window of 600 hours from effective date requires scheduling within maintenance cycles (Compliance).","Dependence on an external document (Raytheon MSB 2740 Revision 1) for precise procedures — operators must obtain and follow that SB (Requirement).","Cross-reference to FAA AD 98-26-16 may require coordination with international records or additional guidance (Note)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Beechcraft 1900 aeroplanes to modify emergency-exit door mechanisms and fit interior and exterior placards per Raytheon Mandatory Service Bulletin MSB 2740 Revision 1 because the doors were found difficult to open (Applicability; Requirement; Background). Compliance is mandatory within 600 flight-hours of 25 March 1999; aircraft operators pay for and schedule the work and must record that the AD has been met (Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-1900-25-emergency-exit-doors","history":"/api/acts/ad-beech-1900-25-emergency-exit-doors/history","analysis":"/api/acts/ad-beech-1900-25-emergency-exit-doors/analysis","conflicts":"/api/acts/ad-beech-1900-25-emergency-exit-doors/conflicts","importantCases":"/api/acts/ad-beech-1900-25-emergency-exit-doors/important-cases","documents":"/api/acts/ad-beech-1900-25-emergency-exit-doors/documents"}}