{"id":"F2006B05640","name":"AD/PA-28/86 Amdt 1 - Ammeter Installation","slug":"ad-pa-28-86-amdt-1-ammeter-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135313,"registerId":"commonwealth-F2006B05640-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/86 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-28 Series Aeroplanes\n\nAD/PA-28/86\n\nAmdt 1\n\n  \nAmmeter Installation 12/86\n\nApplicability: PA-28-150/160 with S/Nos. 28-3378 through 28-4377.\n\nPA-28-180 with S/Nos. 28-3378 through 28-7505259 and 28-E13.\n\nPA-28-181 with S/Nos. 28-7690001 through 28-8190279, 28-8290017, 28-8290018,\n\n28-8290028, 28-8290033, 28-8290034 and 28-8290036.\n\nPA-28-235 with S/Nos. 28-10720 through 28-7710089 and 28-E11. PA-28-236 with S/Nos. 28-7911001 through 28-8511020.\n\nPA-28-201T with S/Nos. 28-7921001 through 28-7921091.\n\nPA-28R-180 with S/Nos. 28R-30004 through 28R-30481, 28R-30483 through 28R- 7130013.\n\nPA-28R-200 with S/Nos. 28R-30482, 28R-35001 through 28R-7635545 PA-28R-201 with S/Nos. 28R-7737001 through 28R-7837317.\n\nPA-28R-201T with S/Nos. 28R-7703001 through 28R-7803373. PA-28RT-201 with S/Nos. 28R-7918001 through 28R-8218026. PA-28RT-201T with S/Nos. 28R-7931001 through 28R-8631006.\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 requirements.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, technical airworthiness directive focused on a specific mechanical defect in specific aircraft. Amendment 1 merely clarifies protection requirements without expanding the scope beyond the original safety purpose."},"complexity_factors":["Single, specific technical requirement with clear reference to external standard (Piper Service Bulletin No. 811A)","Limited conditional logic: only one exception (90 ampere alternators)","Straightforward applicability section using serial number ranges—no nested definitions or cross-references to other legislation","No interpretation section or defined terms","Simple compliance deadline (100 hours after fixed date)","Background provides clear safety rationale without legal ambiguity"],"plain_english_summary":"This safety order requires owners/operators of certain Piper PA‑28 Cherokees, Archers, Dakotas and Arrows (specific serial ranges, excluding aircraft already fitted with 90‑amp alternators) to inspect and correct the ammeter shunt/wiring per Piper Service Bulletin No. 811A. The shunt can shift and stress fragile 20‑gauge wires, risking loose connections, shorts or cockpit fire; repairs must be done within 100 flight hours after 31 July 1986."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 clarifies the protection requirements (Background) by specifying shunt positioning and support; it does not expand the listed applicability or add new serial‑numbered aircraft, but refines the technical requirement to be followed under the existing directive (Requirement)."},"complexity_factors":["Extensive, serial‑numbered applicability covering many PA‑28 variants (Applicability) increases administrative work to determine whether an individual aircraft is affected.","Exception for aircraft fitted with 90 ampere alternators requires verification of equipment fit (Applicability).","Mandates compliance with an external technical document—Piper Service Bulletin No. 811A—so operators must obtain and follow that bulletin (Requirement).","Technical instruction to position and adequately support the shunt to prevent mechanical loads on 20 gauge ammeter wires requires hands‑on installation work and inspection (Requirement).","Fixed compliance window: within 100 hours time in service after 31 July 1986 imposes a concrete scheduling constraint (Compliance).","Safety risk described (loose/shorting connections, potential electrical failure or cockpit fire) motivates mandatory corrective action (Background)."],"plain_english_summary":"This airworthiness directive requires installing and properly supporting an ammeter shunt on specified Piper PA‑28 series aircraft per Piper Service Bulletin No. 811A, so the 20‑gauge ammeter wires do not carry mechanical loads. It applies to listed serial‑numbered PA‑28 variants (except those with 90‑amp alternators) and must be done within 100 hours time‑in‑service after 31 July 1986 to address loose/shorting ammeter connections and reduce the risk of electrical failure or cockpit fire."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-86-amdt-1-ammeter-installation","history":"/api/acts/ad-pa-28-86-amdt-1-ammeter-installation/history","analysis":"/api/acts/ad-pa-28-86-amdt-1-ammeter-installation/analysis","conflicts":"/api/acts/ad-pa-28-86-amdt-1-ammeter-installation/conflicts","importantCases":"/api/acts/ad-pa-28-86-amdt-1-ammeter-installation/important-cases","documents":"/api/acts/ad-pa-28-86-amdt-1-ammeter-installation/documents"}}