{"id":"F2006B07087","name":"AD/SONERAI/1 Amdt 1 - Flight Restriction and Limitations - Placard and Modification","slug":"ad-sonerai-1-amdt-1-flight-restriction-and-limitations-placard-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48849,"registerId":"commonwealth-F2006B07087-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SONERAI/1 Amdt 1 - Flight Restriction and Limitations - Placard and Modification","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)  \nMonnett Sonerai Series Aeroplanes\n\nAD/SONERAI/1\n\nAmdt 1\n\n  \n\nFlight Restriction and Limitations \\- Placard and Modification\n\n  \n12/84\n\nApplicability: All Sonerai II, IIL and IILT.\n\nRequirement: 1. Fabricate and install a placard in full view of the pilot stating:-\n\n    All aerobatic flight, including intentional spins, is prohibited.\n\n    b. Operation above 925lbs. (420 kgs) gross weight is prohibited.\n\n    c. Manoeuvring speed VA 83 knots.\n\n    d. Never exceed speed VNE 148 knots.\n\nAmend the flight manual with an approved flight manual amendment.\n\nNote 1: Attention is drawn to the complementary requirement that ASI limit and sector markings shall comply with these new flight manual limits. AD/GEN/7E para\n\n1.2 refers.\n\nNote 2. Sonerai Service bulletin No. 002 refers.\n\nA copy of Paragraph 1 of the “Requirement” of this A.D. is to be attached to the flight manual until such times as the flight manual amendment is issued.\n\n2 a. Modify wings in accordance with Revision (A) Spar Modification 11-1-83 plan sheets 13, 14, 15 and 16.\n\nb. Remove placard and amend flight manual with approved flight manual amendment.\n\nCompliance: 1. Before further flight.\n\n2. Before 31 December 1985.\n\nBackground: The initial issue of this AD imposed the flight restrictions. Sonerai spar modification 11-1-83 restores a conservative structural safety margin and removes limitations imposed by Sonerai Service Bulletin No. 002.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1198},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The initial directive permanently imposed flight restrictions. Amendment 1 significantly expanded the scope by adding an optional modification pathway (spar reinforcement) that allows owners to remove the flight limitations entirely, transforming it from a permanent restriction into a temporary safety measure pending structural repair."},"complexity_factors":["Short, discrete requirements limited to two specific actions","Limited defined terms (only standard aviation abbreviations like VA and VNE)","Two-phase compliance structure with clear deadlines (immediate vs. 31 Dec 1985)","Single external reference to technical plans (Spar Modification 11-1-83 sheets 13-16)","Minimal cross-referencing to other legislation (only a passing reference to AD/GEN/7E regarding airspeed indicators)"],"plain_english_summary":"Owners/operators of Monnett Sonerai II, IIL, and IILT homebuilt aircraft must follow a safety directive addressing weakened wing spars: it imposes immediate cockpit placard warnings with weight and speed/aerobatic limits and requires attaching the directive to the flight manual, while mandating a structural wing-spar strengthening modification by a set deadline.\n\nThis prevents possible in‑flight structural failure at higher loads or during aerobatics; completing the approved spar modification restores full operating capability and allows removal of the temporary restrictions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sonerai-1-amdt-1-flight-restriction-and-limitations-placard-and-modification","history":"/api/acts/ad-sonerai-1-amdt-1-flight-restriction-and-limitations-placard-and-modification/history","analysis":"/api/acts/ad-sonerai-1-amdt-1-flight-restriction-and-limitations-placard-and-modification/analysis","conflicts":"/api/acts/ad-sonerai-1-amdt-1-flight-restriction-and-limitations-placard-and-modification/conflicts","importantCases":"/api/acts/ad-sonerai-1-amdt-1-flight-restriction-and-limitations-placard-and-modification/important-cases","documents":"/api/acts/ad-sonerai-1-amdt-1-flight-restriction-and-limitations-placard-and-modification/documents"}}