{"id":"F2006B05870","name":"AD/PA-32/74 Amdt 1 - Ammeter Installation","slug":"ad-pa-32-74-amdt-1-ammeter-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135908,"registerId":"commonwealth-F2006B05870-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-32/74 Amdt 1 - Ammeter Installation","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)  \nPiper PA-32 (Cherokee Six) Series Aeroplanes\n\nAD/PA-32/74\n\nAmdt 1\n\n  \nAmmeter Installation 12/86\n\n| Applicability: | PA-32-260    | with S/Nos | 32-1 through 32-7800008         |\n| -------------- | ------------ | ---------- | ------------------------------- |\n|                | PA-32-300    | with S/Nos | 32-40000 through 32-7940290     |\n|                | PA-32R-300   | with S/Nos | 32R-7680001 through 32R-7880068 |\n|                | PA-32RT-300  | with S/Nos | 32R-7885001 through 32R-7985105 |\n|                | PA-32RT-300T | with S/Nos | 32R-7787001 through 32R-7987126 |\n|                | PA-32-301    | with S/Nos | 32-8006001 through 32-8106087   |\n|                | PA-32-301T   | with S/Nos | 32-8024001 through 32-8124030   |\n|                | PA-32R-301   | with S/Nos | 32R-8013001 through 32R-8113094 |\n|                | PA-32R-301T  | with S/Nos | 32R-8029001 through 32R-8129090 |\n\nExcept those aircraft fitted with ninety (90) ampere alternators.\n\nRequirement: Action in accordance with Piper Service Bulletin No 811A. Ensure the shunt is positioned and adequately supported to prevent mechanical loads being applied to the 20 gauge wires connected to the ammeter.\n\nCompliance: Within 100 hours time in service after 31 July 1986.\n\nBackground: Reports have been received of loose and/or shorting ammeter connections at the ammeter cluster gauge. If this condition is allowed to continue without rectification the possibility exists for electrical failure or a fire within the cockpit. Amendment 1 clarifies the protection requirement.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"Amendment 1 clarifies the protection requirement for the ammeter installation. The AD retains the same applicability, compliance timeframe and primary action (follow Service Bulletin No. 811A), so the amendment narrows ambiguity rather than expanding the set of affected aircraft or adding new actions."},"complexity_factors":["Limited technical scope: single component (ammeter shunt) adjustment and support","Narrow applicability: specific PA‑32 variants identified by serial-number ranges","One explicit exception: aircraft with 90‑amp alternators are excluded","Reliance on an external document (Piper Service Bulletin No. 811A) for procedural detail","Short compliance window (100 flight hours) that creates scheduling pressure for operators","Compliance enforcement by regulator (AD) shifts cost and execution to owners/operators"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Piper PA‑32 series aeroplanes (listed by serial-number ranges, except aircraft fitted with 90‑amp alternators) to comply with Piper Service Bulletin No. 811A to reposition and adequately support the ammeter shunt. Compliance must occur within 100 flight hours after 31 July 1986.\n\nThe aim is to prevent mechanical loads on 20‑gauge ammeter wires that have caused loose or shorting connections, reducing the risk of electrical failure or cockpit fire. Owners/operators pay for and arrange the work; CASA enforces compliance via the AD."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This airworthiness directive maintains its original narrow scope. Amendment 1 does not expand the applicability or purpose beyond the original 1974 directive; it merely clarifies the protection requirement for the shunt installation. The scope remains tightly focused on a specific electrical safety issue in a defined set of Piper aircraft."},"complexity_factors":["Single, specific technical requirement referencing an external manufacturer document (Piper Service Bulletin No 811A)","Limited conditional logic: only one exemption (90 ampere alternators)","Straightforward applicability table with 9 aircraft variants and serial number ranges","No defined terms section, no cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Clear compliance deadline (100 hours time in service after fixed date)","Single-page document with minimal procedural steps"],"plain_english_summary":"This CASA safety directive orders owners/operators of specified Piper PA-32/PA-32R/PA-32RT/PA-32-301 aircraft to inspect and correct the ammeter installation — fitting and supporting the shunt per Piper Service Bulletin No. 811A — to prevent stress on thin ammeter wiring. Aircraft with 90‑amp alternators are exempt. It's mandatory (offence to ignore) because loose/shorted ammeter wiring can cause total electrical failure or cockpit fire; work due within 100 flight hours after 31 July 1986. Amendment 1 clarifies shunt/wiring protection."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-74-amdt-1-ammeter-installation","history":"/api/acts/ad-pa-32-74-amdt-1-ammeter-installation/history","analysis":"/api/acts/ad-pa-32-74-amdt-1-ammeter-installation/analysis","conflicts":"/api/acts/ad-pa-32-74-amdt-1-ammeter-installation/conflicts","importantCases":"/api/acts/ad-pa-32-74-amdt-1-ammeter-installation/important-cases","documents":"/api/acts/ad-pa-32-74-amdt-1-ammeter-installation/documents"}}