{"id":"F2006B11411","name":"AD/OM-P/3 Amdt 1 - Throttle Lever Screw - Replacement","slug":"ad-om-p-3-amdt-1-throttle-lever-screw-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57315,"registerId":"commonwealth-F2006B11411-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/OM-P/3 Amdt 1 - Throttle Lever Screw - Replacement","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nOmnipol Piston Engines\n\nAD/OM-P/3\n\nAmdt 1\n\n  \nThrottle Lever Screw \\- Replacement NK\n\nApplicability: Walter M337 and M332 engines.\n\nRequirement: Replace the throttle lever clamping screw with a standard 4mm x 20mm bolt and steel stop nut or a castellated nut and 1mm split pin in accordance with accompanying drawing.\n\nAccomplishment instructions:\n\n    Remove the throttle lever from the throttle shaft, and enlarge the clamping screw bore to 4.2 + 0.1mm.\n\n    2. Fit lever to throttle shaft, eliminate backlash and enlarge the throttle lever groove to accommodate a standard 4mm bolt.\n\n    3. Fit the bolt, castellated nut and split pin or steel stop nut and check the rigging of the lever.\n\nNote: The P/N's of the bolt, nuts and pin listed in SBs M332/22 and M337/11 correspond with the Czechoslovakian national standard for 4mm x 20mm bolt, castellated nut or steel stop nut, and 1mm split pins.\n\nor, Omnipol SB Walter M332/22 or M337/11.\n\n![](image.002.png)  \n\nCompliance: Within 100 hours time in service after 31 January 1975","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1763},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment (Amdt 1) appears to maintain the original narrow scope of the directive, continuing to apply solely to the throttle lever clamping screw replacement on Walter M337 and M332 engines without expanding to additional aircraft systems or engine models."},"complexity_factors":["Reference to external technical documents (Service Bulletins M332/22 and M337/11)","Precise dimensional tolerance specified (4.2 + 0.1mm bore diameter)","Compliance deadline calculated based on 'time in service' flight hours rather than calendar date","Reference to foreign national standards (Czechoslovakian technical specifications)"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of Walter M337 and M332 piston engines to replace a potentially failing throttle-lever clamp screw with a 4 mm bolt and locking nut (either a steel stop nut or a castellated nut secured by a split pin). The modification — involving drilling and minor lever rework — must be done within 100 flight hours after 31 January 1975 to prevent throttle loss and ensure safe engine control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-om-p-3-amdt-1-throttle-lever-screw-replacement","history":"/api/acts/ad-om-p-3-amdt-1-throttle-lever-screw-replacement/history","analysis":"/api/acts/ad-om-p-3-amdt-1-throttle-lever-screw-replacement/analysis","conflicts":"/api/acts/ad-om-p-3-amdt-1-throttle-lever-screw-replacement/conflicts","importantCases":"/api/acts/ad-om-p-3-amdt-1-throttle-lever-screw-replacement/important-cases","documents":"/api/acts/ad-om-p-3-amdt-1-throttle-lever-screw-replacement/documents"}}