{"id":"F2006B03759","name":"AD/BEECH 23/45 - Electric Fuel Boost Pump","slug":"ad-beech-23-45-electric-fuel-boost-pump","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43354,"registerId":"commonwealth-F2006B03759-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 23/45 - Electric Fuel Boost Pump","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 19, 23 and 24 Series Aeroplanes\n\nAD/BEECH 23/45 Electric Fuel Boost Pump 8/88\n\nApplicability: Model A23-24 and A24 Musketeer Serial No MA-1 through MA-368; A24R Serial No MC-2 through MC-95; A24-R, B24R, and C24R Sierra 200, Serial No MC-96 through MC-795.\n\nRequirement: Action in accordance with Beechcraft Service Bulletin No 2217.\n\nNote: FAA AD 88-10-01 amendment 39-5904 refers.\n\nCompliance: Prior to the issue of the next Maintenance Release after 11 August 1988.\n\nBackground: The manufacturer has received reports of engine power loss which resulted from loss of fuel pressure, caused by broken electric fuel boost pump vane material obstructing fuel flow in the engine driven pump. This AD requires the replacement of the electric fuel boost pump with a pump having improved vane material. Beech Aircraft Corporation are offering improved pumps on an exchange basis within a limited time period.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive focused specifically on a known mechanical defect in fuel boost pumps. It has not expanded beyond its original purpose of mandating replacement of defective pumps in specific aircraft models. Airworthiness Directives are typically narrow, technical instruments by design."},"complexity_factors":["Very short document (approximately 150 words)","Only 4 defined elements: Applicability (specific aircraft models/serial numbers), Requirement (reference to external Service Bulletin), Compliance deadline, and Background explanation","Single straightforward requirement with no exceptions, exemptions, or conditional logic","No internal cross-references to other legislation sections","Simple temporal trigger (date-based compliance deadline)","References only one external document (Beechcraft Service Bulletin No 2217) and one related FAA directive for context"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **Beechcraft aeroplane models** (the Musketeer and Sierra 200 series built between certain serial numbers).\n\n**What it does:**\n- **The problem:** Some planes have electric fuel boost pumps with vanes (rotating parts inside the pump) made of material that can break apart. When these vanes break, the debris can block fuel flow to the engine, causing engine power loss — a serious flight safety risk.\n- **The fix:** Owners must replace the faulty fuel boost pump with an improved version made from better, stronger material.\n- **The deadline:** The replacement must happen **before the next Maintenance Release is issued after 11 August 1988**. A Maintenance Release is basically a certificate saying the aircraft is safe to fly — so you can't legally fly the plane until this fix is done.\n\n**Who it affects:**\n- Owners and operators of specific Beechcraft 19, 23, and 24 series aircraft (specific serial numbers listed in the Applicability section).\n- Licensed aircraft maintenance engineers who issue Maintenance Releases.\n\n**Why it matters:**\nThis is a **critical safety issue**. Engine power loss due to fuel starvation can lead to forced landings or crashes. The directive makes the fix legally mandatory rather than optional. The manufacturer was offering exchange pumps at a discount for a limited time, so the AD also gave owners a cost-effective window to comply."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD’s scope is limited and explicit: it targets replacement of electric fuel boost pumps on specified Beechcraft models and serial number ranges and prescribes compliance with Beechcraft Service Bulletin No. 2217 before the next Maintenance Release after 11 August 1988. The instrument text contains no indication that the scope was expanded or narrowed beyond those stated applicability and requirements."},"complexity_factors":["Narrow applicability tied to specific models and serial number ranges (Applicability)","Mandatory compliance to a single external technical document (Beechcraft Service Bulletin No. 2217) rather than bespoke steps in the AD (Requirement)","Fixed compliance deadline linked to next Maintenance Release after a calendar date, creating variable compliance timing across operators (Compliance)","Manufacturer exchange offer exists but is time‑limited and not part of the mandatory AD text, adding a practical but non‑regulatory variable (Background)","Cross-reference to a corresponding FAA AD (Note) that may be relevant for operators but not detailed here"],"plain_english_summary":"This AD requires owners/operators of certain Beechcraft Sierra (specified serial ranges) to replace the electric fuel boost pump per Beechcraft Service Bulletin No. 2217 before the next Maintenance Release after 11 Aug 1988. It responds to reports of vane fragments blocking fuel flow and causing engine power loss. A limited-time manufacturer exchange offer for improved pumps is available."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-23-45-electric-fuel-boost-pump","history":"/api/acts/ad-beech-23-45-electric-fuel-boost-pump/history","analysis":"/api/acts/ad-beech-23-45-electric-fuel-boost-pump/analysis","conflicts":"/api/acts/ad-beech-23-45-electric-fuel-boost-pump/conflicts","importantCases":"/api/acts/ad-beech-23-45-electric-fuel-boost-pump/important-cases","documents":"/api/acts/ad-beech-23-45-electric-fuel-boost-pump/documents"}}