{"id":"F2006B08168","name":"AD/CESSNA 310/40 - Pre-Certification Requirements - Modifications","slug":"ad-cessna-310-40-pre-certification-requirements-modifications","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115353,"registerId":"commonwealth-F2006B08168-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 310/40 - Pre-Certification Requirements - Modifications","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)  \nCessna 310 Series Aeroplanes\n\nAD/CESSNA 310/40 Pre-Certification Requirements \\- Modifications\n\n  \n9/75\n\nApplicability: All model 310R.\n\nRequirement: Modify the aircraft in accordance with the requirements of ANO 101.22 in respect of the following:\n\n    Install a placard in the cabin specifying the periods during which smoking is prohibited.\n\n    2. (a) Install fuelling equipment bonding points at each fuel filling point.\n\n(b) Install and identify external earthing points for the attachment of ground connections on each main under- carriage assembly or on the nose gear.\n\n    3. Modify the turn co-ordinator failure warning system to continuously monitor the instrument power supply, to a scheme approved by the Secretary.\n\n    4. Modify the aircraft external electrical power system to prevent a power supply of reversed polarity or phase sequence being connected to the aircraft electrical system, to a scheme approved by the Secretary.\n\nCompliance: Before 30 September 1975.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1660},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope as a pre-certification safety modification for Cessna 310R aircraft. It addresses the four specific technical issues identified in the original 1975 requirement without expansion to other aircraft models or additional systems."},"complexity_factors":["References external technical standard (ANO 101.22) without reproducing its contents","Requires administrative approval by the Secretary for modifications 3 and 4","Technical aviation terminology (bonding points, phase sequence, turn coordinator) requires specialist engineering knowledge","Short discrete requirements but implementation depends on external engineering drawings and standards"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of Cessna 310R aeroplanes to complete specified safety modifications — including fuel bonding/earthing, instrument power supervision, external power‑socket protection, and cabin no‑smoking signage — by 30 September 1975. Some engineering modifications require approval by the Secretary. The measures reduce refuelling fire/explosion risk, ensure critical instruments warn of power loss, and protect the aircraft’s electrical systems."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-310-40-pre-certification-requirements-modifications","history":"/api/acts/ad-cessna-310-40-pre-certification-requirements-modifications/history","analysis":"/api/acts/ad-cessna-310-40-pre-certification-requirements-modifications/analysis","conflicts":"/api/acts/ad-cessna-310-40-pre-certification-requirements-modifications/conflicts","importantCases":"/api/acts/ad-cessna-310-40-pre-certification-requirements-modifications/important-cases","documents":"/api/acts/ad-cessna-310-40-pre-certification-requirements-modifications/documents"}}