{"id":"F2006B07479","name":"AD/TSA-600/13 - Low Fuel Warning Light - Modification","slug":"ad-tsa-600-13-low-fuel-warning-light-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49900,"registerId":"commonwealth-F2006B07479-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TSA-600/13 - Low Fuel Warning Light - Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Aerostar (Piper/Ted Smith) 600 and 700 Series Aeroplanes\n\n \n\nAD/TSA-600/13 Low Fuel Warning Light - Modification 4/78\n\nApplicability: All models to S/No. 0474. Document:  1. Ted Smith SB No. SB600-71; or\n\n2. FAA AD 77-26-04; or\n\n \n\n3. FAA AD 79-01-05.\n\n \n\nCompliance: Within 100 hours time in service after 30 April 1978.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument, as supplied, applies to Aerostar 600/700 series aeroplanes up to serial number 0474 and mandates modification of the low fuel warning light using one of three specified documents, completed within 100 hours after 30 April 1978. There is no indication in the supplied text that the applicability or required action has been altered from the instrument’s own stated terms."},"complexity_factors":["Narrow technical scope: applies only to Aerostar 600/700 series up to S/No. 0474 (\"Applicability\")","Mandatory compliance deadline with a short window (100 hours after 30 April 1978) (\"Compliance\")","Reliance on external technical documents (Ted Smith SB600-71 or FAA ADs 77-26-04 / 79-01-05) for the required work (\"Document\")","Minimal procedural detail in the AD itself (requires reading and following external documents)","Legacy dating and fleet-specific applicability can create record-keeping and verification steps for operators and maintainers (AD date 4/78, \"Compliance\")"],"plain_english_summary":"The directive mandates a specific modification to the low fuel warning light on Aerostar (Piper/Ted Smith) 600/700 series aeroplanes up to serial number 0474, to be done per one of the listed approved documents and completed within 100 flight hours after 30 April 1978.  \n\nOwners/operators must arrange and fund the work and schedule downtime; compliance is required to keep the aircraft airworthy."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue Airworthiness Directive from 1978 addressing a specific technical modification to a specific aircraft type. It has not expanded beyond its original purpose of mandating a low fuel warning light modification."},"complexity_factors":["Extremely short document (approximately 150 words of substantive content)","Only 3 defined applicability criteria (aircraft model, series, serial number cutoff)","Simple alternative compliance paths (3 referenced documents, any one acceptable)","Single, unambiguous deadline (100 hours time in service after fixed date)","No nested exceptions, conditional logic, or cross-references to other legislation","No interpretation section or defined terms","Standard AD format with clear, predictable structure"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:**\nIt requires owners and operators of specific **Aerostar (Piper/Ted Smith) 600 and 700 series aeroplanes** to modify the **low fuel warning light system**.\n\n**Who it affects:**\n- Owners and operators of Aerostar 600 and 700 series aircraft with **serial numbers up to 0474**\n- This covers all models in those series up to that specific serial number\n\n**What must be done:**\nThe aircraft must be modified according to one of three technical documents:\n- Ted Smith Service Bulletin SB600-71, **or**\n- FAA Airworthiness Directive 77-26-04, **or**  \n- FAA Airworthiness Directive 79-01-05\n\n**When it must be done:**\nWithin **100 hours of flight time** after 30 April 1978.\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety requirements. This particular AD addresses a potential defect in the low fuel warning system — a critical safety feature that alerts pilots before fuel runs out. Without this modification, pilots might not receive adequate warning of low fuel conditions, creating serious flight safety risks."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tsa-600-13-low-fuel-warning-light-modification","history":"/api/acts/ad-tsa-600-13-low-fuel-warning-light-modification/history","analysis":"/api/acts/ad-tsa-600-13-low-fuel-warning-light-modification/analysis","conflicts":"/api/acts/ad-tsa-600-13-low-fuel-warning-light-modification/conflicts","importantCases":"/api/acts/ad-tsa-600-13-low-fuel-warning-light-modification/important-cases","documents":"/api/acts/ad-tsa-600-13-low-fuel-warning-light-modification/documents"}}