{"id":"F2006B07746","name":"Airworthiness Directives 2004 - Revocation and Remaking - Beechcraft 50 (Twin Bonanza) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-beechcraft-50-twin-bonanza-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50480,"registerId":"commonwealth-F2006B07746-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Beechcraft 50 (Twin Bonanza) Series Aeroplanes","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nBeechcraft 50 (Twin Bonanza) Series Aeroplanes\n\nAD Name AD Number\n\nMixture Control Operation Placard - CANCELLED AD/BEECH 50/1\n\nCylinder Head Thermocouple AD/BEECH 50/2\n\nFuel Line - CANCELLED AD/BEECH 50/3\n\nRivets in Firewall Seal Plates AD/BEECH 50/4\n\nLanding Gear Retract Gearbox Alignment - CANCELLED AD/BEECH 50/5\n\nEngine Section Fuel Line Support - CANCELLED AD/BEECH 50/6\n\nMagneto Ground Leads AD/BEECH 50/7\n\nOutboard Auxiliary Tank Vent Line - CANCELLED AD/BEECH 50/8\n\nOverboard Vent Line - Pesco Fuel Pumps - CANCELLED AD/BEECH 50/9\n\nAuxiliary Fuel Tank Lines - CANCELLED AD/BEECH 50/10\n\nCarburettor Filter Air Door - CANCELLED AD/BEECH 50/11\n\nElevator Control Surfaces AD/BEECH 50/12\n\n50 Amp Motor Overload Circuit Breaker AD/BEECH 50/13\n\nEngine Fuel Lines - CANCELLED AD/BEECH 50/14\n\nElevator Trim Tab Hinge Beam AD/BEECH 50/15\n\nPlastic Control Wheel AD/BEECH 50/16 Amdt 2\n\nLanding Gear Actuators - CANCELLED AD/BEECH 50/17 Amdt 1\n\nElevator Control Rod AD/BEECH 50/18 Amdt 3\n\nFront Seat Restraint Installations AD/BEECH 50/19\n\nOuter Wing Electrical Wiring AD/BEECH 50/20\n\nFlap Bracket AD/BEECH 50/21\n\nControl Wheel Adaptor AD/BEECH 50/22\n\nWing Front Spar AD/BEECH 50/23 Amdt 3\n\nExhaust Augmenter Clamps AD/BEECH 50/24\n\nEngine Mount Bolt Nuts AD/BEECH 50/25\n\nNacelle Interior Fire Seal AD/BEECH 50/26\n\nGoodyear Fuel Cells AD/BEECH 50/27\n\nWheel Well Fuel Lines AD/BEECH 50/28\n\nPowerplant Fire Detection and Extinguishing Systems AD/BEECH 50/29\n\nEngine Emergency Placard AD/BEECH 50/30\n\nRudder and Elevator Trim Tab Systems AD/BEECH 50/31\n\nEmergency Exits - Placards and Markings AD/BEECH 50/32\n\nInterior Door Handles AD/BEECH 50/33","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":3,"scope_assessment":{"changed":false,"description":"This instrument performs a purely administrative 'revoke and remake' function to maintain legal validity of existing airworthiness directives. The scope remains exactly as originally intended — regulating safety requirements for Beechcraft 50 aircraft. No expansion of scope has occurred."},"complexity_factors":["Single, straightforward administrative action (revocation and remaking) with no substantive changes to the directives themselves","Only one defined term implicitly used (the Schedule structure)","No conditional logic or nested exceptions — it's a simple table listing directives","Cross-references limited to the Civil Aviation Safety Regulations 1998 (subregulation 39.001(1)) and the attached directives themselves","Length is short — essentially a cover page plus a schedule table","Note clarifies that directives are re-made 'in exactly the same form', removing ambiguity about whether changes are being made"],"plain_english_summary":"This instrument revokes and re-makes 33 airworthiness directives for Beechcraft 50 (Twin Bonanza) aircraft, restoring them as fresh, legally enforceable CASA safety orders. That preserves mandatory inspection, repair and modification requirements for owners, operators and maintenance engineers so affected aircraft remain compliant and airworthy. A subset of directives is formally cancelled (not re-made), removing those specific obligations."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument does not broaden the substantive scope of airworthiness obligations. It is administrative: it revokes a grouped AD instrument and re‑issues each listed AD as separate instruments in the same substantive form as their latest published editions (see the Note). Some entries are shown as \"CANCELLED\" in the Schedule, reflecting that those particular ADs have been withdrawn previously; the instrument records and re‑issues the current published status rather than creating new obligations. In short, scope is preserved (no material expansion beyond the existing AD requirements)."},"complexity_factors":["Short instrument with a single operative paragraph (revocation and remaking) under subregulation 39.001(1)","Schedule 1 listing approximately 33 AD entries for one aircraft type (Beechcraft 50 series)","10 AD entries in the Schedule explicitly marked \"CANCELLED\" (requires checking latest published status)","Several ADs show amendment notations (e.g. \"Amdt 2\", \"Amdt 3\") requiring cross‑checking the latest published editions","No new substantive requirements in the instrument itself; complexity arises from cross‑references to existing AD texts rather than nested conditions within this instrument","Low conditional logic — the instrument performs two clear actions (revoke grouped instrument; remake listed ADs individually) with an explanatory Note"],"plain_english_summary":"**What this instrument does (mechanically)\n\n- The Civil Aviation Safety Authority (CASA), through a delegated official, cancels (revokes) a grouped instrument called \"Airworthiness Directives 2004\" and re‑issues each listed Airworthiness Directive (AD) as a separate legal instrument. This is done under the authority of subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 (see instrument header).\n- The ADs affected all concern Beechcraft 50 (Twin Bonanza) series aeroplanes and are listed in Schedule 1. The Schedule lists about 33 AD entries. Some of those entries are marked \"CANCELLED\" in the Schedule; others carry amendment notations (for example, \"Amdt 2\").\n- The instrument expressly states that each attached AD is being re‑made exactly in the same form as in the latest published edition of that Directive (see the Note at the end of the instrument).\n\nWho this affects\n\n- Aircraft owners and operators of Beechcraft 50 (Twin Bonanza) series aeroplanes. They are the parties required to comply with the substantive requirements of any AD that applies to their aircraft.\n- Maintenance organisations and licensed aircraft engineers who perform inspections, repairs or modifications required by those ADs.\n- Parts suppliers and shops that supply items or carry out mandated modifications or repairs for compliance.\n\nWhy it matters (practical effect)\n\n- Airworthiness Directives set mandatory maintenance, inspection or modification requirements needed to keep an aircraft type airworthy (legal to operate). By revoking the group instrument and re‑making each AD as a separate instrument, the legal form of the obligations is changed, but the substance of each re‑made AD remains the same as in its latest published version.\n- For ADs marked \"CANCELLED\" in the Schedule, the effect is that those particular directives no longer impose ongoing obligations (consistent with their latest published status). For ADs shown with amendment numbers, the re‑made instruments will reflect those amendments.\n\nOfficial stated purpose and a practical test of that purpose\n\n- The instrument’s stated action is administrative: revoke the grouped 2004 instrument and re‑issue each AD separately. The Note confirms the re‑issued ADs are identical in substance to the latest published forms. The practical reading is that this is housekeeping — reorganising how the ADs are published as legal instruments without changing their operative content.\n\nCosts, incentives and trade‑offs\n\n- Compliance costs borne by operators (time, labour, replacement parts, inspections) are unchanged by this administrative re‑issue; the substantive AD requirements (what must be done to comply) remain the determining cost drivers because the ADs are remade in the same form.\n- Administrative effects: separating ADs into distinct instruments can lower future amendment costs and reduce cross‑instrument confusion (benefit) because each AD can be updated individually. That can make it easier for CASA to vary, cancel or re‑issue a single AD without touching others (administrative flexibility).\n- Transitional risk: there is a short risk of confusion during the changeover if operators or maintenance organisations rely on the older consolidated document rather than the newly re‑made individual ADs. That is an implementation/communication risk rather than a change in substantive obligations.\n\nWho decides, who pays, and what behaviour changes\n\n- Who decides: a CASA delegate exercises the power to revoke and remake ADs under subregulation 39.001(1). After re‑issue, CASA enforces compliance with each AD as a separate legal instrument.\n- Who pays: aircraft owners/operators pay for the inspections, repairs, parts and labour required by the applicable ADs. Maintenance organisations charge for their services.\n- Behaviour changes required: owners/operators and maintenance providers must ensure they track the re‑made individual ADs and continue to comply with applicable inspection/repair/modification requirements. For ADs cancelled in the latest published edition, operators may no longer need to follow those particular requirements.\n\nImplementation and compliance considerations\n\n- Administrative housekeeping of this sort generally reduces future legal complexity because each AD becomes an independent instrument. However, CASA and regulated parties must communicate clearly about where to find the current, re‑made ADs to avoid missed compliance.\n- The instrument does not on its face create new compliance obligations or remove existing ones except where the latest published edition of an AD has itself been cancelled (as reflected in Schedule 1).\n\nSource references in the instrument\n\n- Legal authority: subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 (cited in the instrument header).\n- List of ADs and their status: Schedule 1 of the instrument.\n- Administrative note: the Note states each attached AD is re‑made in exactly the same form as appears in the latest published edition of the Directive.\n\nSummary conclusion (mechanical, not political)\n\n- This is an administrative reorganisation: CASA revokes a grouped AD instrument and re‑issues each listed Beechcraft 50 AD as a separate instrument, leaving the substantive content of each AD as in its latest published form. Operators must continue (or cease, where an AD is cancelled) to follow the specific ADs as re‑made; the principal effect is on legal form and future amendment flexibility rather than on substantive technical requirements.**"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-beechcraft-50-twin-bonanza-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-beechcraft-50-twin-bonanza-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-beechcraft-50-twin-bonanza-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-beechcraft-50-twin-bonanza-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-beechcraft-50-twin-bonanza-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-beechcraft-50-twin-bonanza-series-aeroplanes/documents"}}