{"id":"F2006B03649","name":"AD/BEECH 1900/31 - Landing Gear Emergency Hand Pump - Faulty Component Replacement","slug":"ad-beech-1900-31-landing-gear-emergency-hand-pump-faulty-component-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43239,"registerId":"commonwealth-F2006B03649-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 1900/31 - Landing Gear Emergency Hand Pump - Faulty Component Replacement","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 1900/31 Landing Gear Emergency Hand\n\nPump \\- Faulty Component Replacement\n\nApplicability: All Raytheon (Beechcraft) 1900D model airplanes all serial numbers.\n\n  \n11/99\n\nTX\n\nRequirement: Replace any landing gear emergency hand pump, part number 101-388007-3, with a serial number in the range 2702 through 2833. Defective components are to be returned to the manufacturer for warranty action. Compliance can be shown if the aircraft maintenance records can identify positively that the serial number of the emergency hand pump fitted falls outside of the range of affected components.\n\nNote: US FAA AD 99-18-15 Amdt 39-11281 dated 23 August 1999 refers.\n\nCompliance: Within 25 hours time in service from the effective date of this Directive. This Airworthiness Directive becomes effective on 27 September 1999.\n\nBackground: Information from the manufacturer indicates that certain emergency hand pumps, fitted during manufacture or as replacement parts, within a specific range of serial numbers have been machined incorrectly and will not operate correctly in an emergency situation. This Directive introduces measures to identify and replace the defective components. All aircraft serial numbers are deemed applicable as any one of them may have had one of the defective components fitted during its operational life.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing a specific manufacturing defect in a single component on one aircraft type. There is no evidence of scope creep; it remains a targeted safety intervention."},"complexity_factors":["Single, clearly defined applicability (one aircraft model, all serial numbers)","Only one specific part number and serial number range to identify","Straightforward compliance pathway: replace or prove not affected via maintenance records","Single deadline (25 hours time in service from effective date)","No nested exceptions, conditional logic, or cross-references to other legislation beyond a single reference to the corresponding US FAA directive","Total length: approximately 250 words"],"plain_english_summary":"This CASA safety order applies to all Beechcraft 1900D aircraft and requires replacement of the emergency landing-gear hand pump (P/N 101-388007-3) if its serial number is between 2702 and 2833, because the pumps were machined incorrectly and may fail in an emergency. Owners, operators and maintenance engineers must check serials, replace any affected pump within 25 flight hours of 27 September 1999, retain records if unaffected, and return faulty pumps to the manufacturer for warranty replacement."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive enforces the manufacturer-identified corrective action — identifying and replacing a specific defective component range. It does not broaden the population beyond Beechcraft 1900D aeroplanes or extend remedies beyond replacement and return for warranty action; the scope remains focused on removing the specified faulty pumps (Requirement; Background)."},"complexity_factors":["Narrow technical trigger: applies only to pumps with part number 101-388007-3 and serial numbers 2702–2833 (Requirement).","Short compliance window: replacement required within 25 hours time-in-service from the effective date (Compliance).","Record-check burden: operators may demonstrate compliance by verifying maintenance records for pump serial numbers (Requirement).","Logistics and supply: operators must source replacement pumps and return defective components to the manufacturer for warranty action (Requirement).","Universal applicability to airframes: applies to all 1900D serial numbers because any airframe could have received an affected pump during its life (Applicability/Background).","Cross-reference to FAA AD may require coordination with international manufacturer guidance or suppler channels (Note)."],"plain_english_summary":"This Airworthiness Directive orders operators of Beechcraft 1900D aeroplanes to replace landing-gear emergency hand pumps (part 101-388007-3) whose serial numbers fall between 2702 and 2833 because those pumps may have been machined incorrectly and fail in an emergency. Operators must complete replacement within 25 hours time-in-service, return defective units to the manufacturer for warranty action, and record compliance in the aircraft maintenance records."},"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-beech-1900-31-landing-gear-emergency-hand-pump-faulty-component-replacement","history":"/api/acts/ad-beech-1900-31-landing-gear-emergency-hand-pump-faulty-component-replacement/history","analysis":"/api/acts/ad-beech-1900-31-landing-gear-emergency-hand-pump-faulty-component-replacement/analysis","conflicts":"/api/acts/ad-beech-1900-31-landing-gear-emergency-hand-pump-faulty-component-replacement/conflicts","importantCases":"/api/acts/ad-beech-1900-31-landing-gear-emergency-hand-pump-faulty-component-replacement/important-cases","documents":"/api/acts/ad-beech-1900-31-landing-gear-emergency-hand-pump-faulty-component-replacement/documents"}}