{"id":"F2006B04016","name":"AD/BEECH 55/71 - Hawker De Havilland Restraint System","slug":"ad-beech-55-71-hawker-de-havilland-restraint-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43625,"registerId":"commonwealth-F2006B04016-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 55/71 - Hawker De Havilland Restraint System","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 55, 58 and 95-55 (Baron) Series Aeroplanes\n\nAD/BEECH 55/71 Hawker De Havilland Restraint System 11/88\n\nApplicability: All models fitted with a restraint system installed in accordance with Hawker De Havilland Drawing 05-F-670.\n\nRequirement: Inspect for corrosion damage occurring in the structure at the upper torso restraint attachment under the bolt head AN 970-3 washer. Repair as necessary in accordance with a scheme approved by the Authority.\n\nCompliance: At the next inspection for Maintenance Release issue after 3 November 1988.\n\nBackground: Three consecutively inspected aircraft modified in accordance with the De Havilland drawing have been found with corrosion under the steel AN 970-3 ‘penny’ washer. In all cases the corrosion would have allowed separation of the upper attachment under load.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2099},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original purpose: addressing a specific corrosion risk identified in shoulder harness installations on particular Beechcraft Baron models. It has not expanded beyond this targeted safety intervention."},"complexity_factors":["Single, discrete technical requirement with no conditional branches or exceptions","Specific applicability limited to three aircraft model series and one technical drawing","Precise part reference (AN 970-3 washer) eliminates ambiguity but requires technical familiarity","Clear compliance deadline tied to existing Maintenance Release schedule"],"plain_english_summary":"This Airworthiness Directive orders owners of certain Beechcraft 55, 58 and 95-55 Baron aircraft (with restraint systems per Hawker De Havilland Drawing 05-F-670) to inspect shoulder-harness bolt/washer mounting points for corrosion. Corrosion under the AN 970-3 washer was found on three aircraft and could cause harness failure in an accident. Any damage must be repaired using a CASA-approved method at the next scheduled maintenance after 3 November 1988."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-55-71-hawker-de-havilland-restraint-system","history":"/api/acts/ad-beech-55-71-hawker-de-havilland-restraint-system/history","analysis":"/api/acts/ad-beech-55-71-hawker-de-havilland-restraint-system/analysis","conflicts":"/api/acts/ad-beech-55-71-hawker-de-havilland-restraint-system/conflicts","importantCases":"/api/acts/ad-beech-55-71-hawker-de-havilland-restraint-system/important-cases","documents":"/api/acts/ad-beech-55-71-hawker-de-havilland-restraint-system/documents"}}