{"id":"F2006B03572","name":"AD/BEA 109/2 - Propeller Inspection and Operating Restriction","slug":"ad-bea-109-2-propeller-inspection-and-operating-restriction","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43139,"registerId":"commonwealth-F2006B03572-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEA 109/2 - Propeller Inspection and Operating Restriction","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)  \nBeagle A109 (Airedale) Series Aeroplanes\n\nAD/BEA 109/2 Propeller Inspection and Operating Restriction 1/70\n\nApplicability: All models fitted with McCauley 2D36C14/78KM-4 propellers.\n\nRequirement: 1. Visually inspect blades for damage with the aid of a 10 power (2 1/2x) glass for defects such as erosion, scratches, nicks, cracks, etc. Rectify as necessary. After rectification dye penetrant inspect the entire blade from hub to tip.\n\nNote: This work can be performed without removing the propeller from the engine.\n\n2. Install a placard on the instrument panel adjacent to the RPM indicator reading as follows:\n\n\"AVOID CONTINUOUS OPERATION WHILE DESCENDING BETWEEN 2250 AND 2550 RPM WITH MANIFOLD PRESSURE SETTINGS BELOW\n\n15 INCHES Hg.\"\n\nNote: McCauley service Bulletin No. 76 also refers.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1945},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains tightly focused on its original safety purpose: mandating specific inspection procedures and operating restrictions for a defined subset of Beagle A109 aircraft with particular McCauley propellers. There is no evidence of scope expansion beyond this specific airworthiness issue."},"complexity_factors":["Very short document containing only two specific, actionable requirements","No nested conditional logic or exceptions","Minimal cross-referencing (only one external service bulletin)","Technical precision required (specific propeller model numbers, magnification power, RPM ranges, and pressure measurements)"],"plain_english_summary":"This AD applies to Beagle A109 (Airedale) aircraft with McCauley propellers model 2D36C14/78KM-4. It requires a 10x magnifying inspection of each propeller blade for erosion, scratches, nicks or cracks (repair any damage), followed by a full-blade dye-penetrant inspection after repairs; the inspection may be done without removing the propeller. Operators must install a placard beside the RPM gauge reading: \"AVOID CONTINUOUS OPERATION WHILE DESCENDING BETWEEN 2250 AND 2550 RPM WITH MANIFOLD PRESSURE SETTINGS BELOW 15 INCHES Hg.\" This prevents vibration-induced propeller failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bea-109-2-propeller-inspection-and-operating-restriction","history":"/api/acts/ad-bea-109-2-propeller-inspection-and-operating-restriction/history","analysis":"/api/acts/ad-bea-109-2-propeller-inspection-and-operating-restriction/analysis","conflicts":"/api/acts/ad-bea-109-2-propeller-inspection-and-operating-restriction/conflicts","importantCases":"/api/acts/ad-bea-109-2-propeller-inspection-and-operating-restriction/important-cases","documents":"/api/acts/ad-bea-109-2-propeller-inspection-and-operating-restriction/documents"}}