{"id":"F2006B05003","name":"AD/CESSNA 170/74 - KAP 140 Autopilot System","slug":"ad-cessna-170-74-kap-140-autopilot-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44913,"registerId":"commonwealth-F2006B05003-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nCessna 170, 172, F172, FR172 and 175 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CESSNA 170/74 KAP 140 Autopilot Syste","sectionType":"part","heading":"AD/CESSNA 170/74 KAP 140 Autopilot System 10/2004","content":"# AD/CESSNA 170/74 KAP 140 Autopilot System 10/2004\n\nApplicability: Cessna 172 R and 172S model aeroplanes listed below that are equipped with a Honeywell KAP 140 autopilot computer system, part number (P/N) 065-00176-2501, 065-00176-5001, 065-00176-5101 or 065-00176-5201, all serial numbers.","sortOrder":1},{"sectionNumber":"Model","sectionType":"part","heading":"Model","content":"## Model\n\n172R\n\n172S","sortOrder":2},{"sectionNumber":"Serial Numbers","sectionType":"part","heading":"Serial Numbers","content":"##   \nSerial Numbers\n\n17280001 through 17281073, 17281075 through 17281127 and\n\n17281130\n\n172S8001 through 172S9195, 172S9197, 172S9198 and 172S9200\n\nthrough 172S9203","sortOrder":3},{"sectionNumber":"Cessna 170, 172, F172, FR172 and 175 Ser","sectionType":"part","heading":"Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes","content":"## Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes\n\nAD/CESSNA 170/74 (continued)\n\nHowever, when issuing AD 2003-24-13 the FAA inadvertently omitted four part numbers from the applicability that was reflected in AD/CESSNA 170/73. This Directive, whilst not superseding AD/CESSNA 170/73, complements that Directive by listing the omitted KAP 140 autopilot computer system part numbers.\n\nThis Directive requires the installation of an update to the operating software of the KAP 140 autopilot computer system. This action is intended to prevent unintentional engagement of the KAP 140 autopilot computer system, which could cause the pilot to take inappropriate actions.\n\n![](image.002.jpeg)  \n\nGary J Carr\n\nDelegate of the Civil Aviation Safety Authority 13 August 2004\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 8 September 2004.","sortOrder":4}],"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"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This Directive expands the practical scope of the existing AD regime by listing four KAP 140 autopilot computer system part numbers that were inadvertently omitted from the earlier FAA AD. It complements AD/CESSNA 170/73 rather than superseding it, thereby adding affected installations to the pool of aircraft required to receive the software update."},"complexity_factors":["Safety‑critical avionics software update required for affected aircraft (technical implementation and verification).","Applicability restricted by specific Honeywell KAP 140 part numbers and narrow Cessna 172R/172S serial‑number ranges, increasing identification effort.","Interplay with prior FAA and CASA ADs: this Directive complements but does not supersede AD/CESSNA 170/73 and addresses an FAA omission, creating cross‑reference complexity.","Compliance logistics: update must be installed per AD instructions, likely by authorised maintenance or avionics shops (cost and scheduling burden on owners/operators).","Documented omission in the earlier FAA AD means operators must reconcile multiple directives and records to confirm applicability.","The provided text references a compliance section but does not include explicit timing or procedural details, adding ambiguity for implementers."],"plain_english_summary":"This Airworthiness Directive requires owners of certain Cessna 172R and 172S aeroplanes fitted with Honeywell KAP 140 autopilot computer systems (specific part numbers and serial-number ranges) to install an operating‑software update. CASA issued the AD and the update must be installed in accordance with the AD's instructions.\n\nCASA says the update is intended to prevent unintentional autopilot engagement that could cause a pilot to take inappropriate actions. The compliance cost and installation work fall to aircraft owners/operators (usually through authorised maintenance or avionics personnel); the Directive also adds four KAP 140 part numbers omitted from an earlier FAA AD."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope. It was always intended to address the specific autopilot software issue in specific Cessna models. The document explicitly states it is complementing (not expanding) a previous directive by correcting an inadvertent omission of four part numbers. There is no scope creep; it is a technical correction to ensure complete coverage of affected aircraft."},"complexity_factors":["Very short document (approximately 300 words)","Only 4 defined part numbers and specific serial number ranges","Single straightforward requirement: install software update","No nested exceptions or conditional logic beyond basic applicability criteria","Clear cross-reference to one related directive (AD/CESSNA 170/73) with simple explanation of relationship","Minimal regulatory machinery—standard CASA Airworthiness Directive template"],"plain_english_summary":"This safety order requires owners/operators of certain Cessna 172R and 172S aircraft fitted with Honeywell KAP 140 autopilots to install a software update that prevents accidental autopilot engagement — a hazard that can startle pilots or cause unexpected control inputs.  \n\nIt fills a gap from an earlier directive that omitted four part-number variants; compliance is mandatory to preserve airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-74-kap-140-autopilot-system","history":"/api/acts/ad-cessna-170-74-kap-140-autopilot-system/history","analysis":"/api/acts/ad-cessna-170-74-kap-140-autopilot-system/analysis","conflicts":"/api/acts/ad-cessna-170-74-kap-140-autopilot-system/conflicts","importantCases":"/api/acts/ad-cessna-170-74-kap-140-autopilot-system/important-cases","documents":"/api/acts/ad-cessna-170-74-kap-140-autopilot-system/documents"}}