{"id":"F2006B03779","name":"AD/BEECH 300/9 Amdt 1 - Outflow/Safety Valve","slug":"ad-beech-300-9-amdt-1-outflow-safety-valve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43375,"registerId":"commonwealth-F2006B03779-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 300/9 Amdt 1 - Outflow/Safety Valve","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 300 Series Aeroplanes\n\nAD/BEECH 300/9\n\nAmdt 1\n\n  \nOutflow/Safety Valve 3/98\n\nApplicability: All model 300 series aircraft with serial numbers as listed in the requirement document.\n\nRequirement: Inspect and if necessary replace the outflow/safety valve in accordance with the procedures detailed in Beech SB 2484 Revision 1 dated October 1995.\n\nAircraft previously certified against the initial issue of this Directive can be certified as compliant with Amdt 1.\n\nNo person shall install on any aircraft any Outflow/Safety Valve found to be unserviceable in accordance with this directive.\n\nNote: FAA AD 97-25-01 Amdt 39-10224 refers and replaces FAA AD 96-17-10 Amdt 39-9719.\n\nCompliance: Within 200 hours time in service or 4 months, whichever occurs first, from the effective date of this directive.\n\nThis amendment becomes effective on 26 February 1998.\n\nBackground: Manufacturing problems with the safety valve may cause a rapid decompression of the aircraft should a valve failure occur. This amendment expands the range of serial numbers per outflow/safety valves affected.\n\nThe original issue of this airworthiness directive became effective on 7 November 1996.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of addressing faulty outflow/safety valves in Beechcraft 300 series aircraft. The only change is an expansion of the affected serial numbers to cover additional aircraft with the same manufacturing defect. The core safety purpose and regulatory mechanism remain unchanged from the 1996 original."},"complexity_factors":["Very short document (approximately 200 words)","Only 1 defined term implicitly referenced (the 'requirement document' containing serial numbers)","Single primary obligation with clear time-based compliance trigger","No nested conditional logic or cross-references to other legislation sections","Straightforward applicability criteria (aircraft model + serial number list)","One simple exception/clarification (previous compliance under original directive remains valid)"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of certain Beechcraft 300-series aeroplanes to inspect the outflow/safety valve and replace any defective units per the Beechcraft service bulletin, to prevent possible rapid decompression. Compliance is mandatory within 200 flight hours or 4 months, and valves found faulty must not be reinstalled. This amendment widens the affected serial-number range; aircraft already checked under the 1996 AD are treated as compliant."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment expands the set of affected serial numbers for Beechcraft 300 series outflow/safety valves (widening applicability). The required action (inspect and, if necessary, replace per Beech SB 2484 Rev 1) and the compliance timeframe remain the same, and aircraft already certified under the original directive are accepted as compliant with this amendment."},"complexity_factors":["Reliance on external technical document: Beech SB 2484 Revision 1 for inspection/replacement procedures","Applicability tied to a separate serial-number list in the requirement document (external lookup required)","Technical maintenance action (inspection and possible parts replacement) requiring qualified personnel and parts logistics","Short compliance window (200 hours or 4 months) creates scheduling and operational impact","Regulatory prohibition on installing valves found unserviceable (ongoing compliance burden)","Equivalence clause allowing prior compliance to satisfy the amendment (administrative verification required)","Cross-reference to FAA ADs for context and replacement history (multiple regulatory sources to reconcile)"],"plain_english_summary":"Requires inspection and, if necessary, replacement of the outflow/safety valve on specified Beechcraft 300 series aircraft per Beech Service Bulletin 2484 Revision 1. Compliance must occur within 200 hours time-in-service or 4 months. The directive responds to manufacturing defects that may cause rapid decompression. Aircraft owners/operators must carry out and pay for inspections/replacements, must not install valves found unserviceable, and may treat aircraft already certified under the original directive as compliant with this amendment."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-300-9-amdt-1-outflow-safety-valve","history":"/api/acts/ad-beech-300-9-amdt-1-outflow-safety-valve/history","analysis":"/api/acts/ad-beech-300-9-amdt-1-outflow-safety-valve/analysis","conflicts":"/api/acts/ad-beech-300-9-amdt-1-outflow-safety-valve/conflicts","importantCases":"/api/acts/ad-beech-300-9-amdt-1-outflow-safety-valve/important-cases","documents":"/api/acts/ad-beech-300-9-amdt-1-outflow-safety-valve/documents"}}