{"id":"F2006B06293","name":"AD/PMC/38 Amdt 1 - Blade and Ferrule - Inspection","slug":"ad-pmc-38-amdt-1-blade-and-ferrule-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47374,"registerId":"commonwealth-F2006B06293-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PMC/38 Amdt 1 - Blade and Ferrule - Inspection","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPropellers \\- Variable Pitch \\- McCauley\n\nAD/PMC/38\n\nAmdt 1\n\n  \nBlade and Ferrule \\- Inspection 3/86\n\nApplicability: Hub and blade models 2A34C66/90AT-2 with hub serial numbers in the range of 777425 through 7910103; E2A34C73/90 AT-8 with serial numbers 735111 and 774297 through 796442 and 2A36C23/84B-0 with serial numbers 778768 and 7710176 through 7910666 that have accumulated 400 hours time in service or more and have not been reconditioned since new.\n\nNote: For qualification of the actual affected serial numbers refer to Table 1 of SB. 151A.\n\nDocument: McCauley Service Bulletin 151A.\n\nCompliance: Unless already accomplished prior to issue of the next maintenance release after 31 March 1986.\n\nBackground: The manufacturer advises the need to carry out a one time inspection of the blade retention threads for scratches caused by a sharp edge on the hub thread. Affected propellers may be installed on but not limited to Cessna 180, 180A through 180J, 188, 188A, 188B, P206, P206A thru P206E, 210E thru 210L. This AD is revised to include certain 2A36C23 propellers installed on but not limited to the following Beech Aircraft; 35-33, -A33, -B33, -C33, -C33A, E33, E33A, E33C, F33, F33A, F33C, G33, H35, J35, K35, M35, N35, P35, S35, V35, V35A, V35B, 36, A36.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"This is Amendment 1 (Amdt 1) to the original AD/PMC/38. The scope has expanded from the original directive to now include additional 2A36C23 propellers installed on Beech Aircraft models (35-33 series through A36). The original AD appears to have covered only Cessna aircraft, and this amendment adds the Beechcraft fleet to the affected population."},"complexity_factors":["Highly specific applicability criteria involving multiple model numbers, serial number ranges, and hour thresholds","Cross-reference to external technical document (McCauley Service Bulletin 151A) for complete identification of affected parts","Conditional compliance deadline tied to 'next maintenance release' rather than calendar date","Extensive list of aircraft models in background section creates visual density without adding legal complexity"],"plain_english_summary":"This mandatory CASA airworthiness directive requires owners/operators and maintenance organisations to perform a one‑time inspection of blade retention threads on certain McCauley variable‑pitch propellers (units with 400+ hours since new and not reconditioned) to check for scratches from hub threads. \n\nThe check must be completed before the next maintenance release issued after 31 March 1986. It aims to prevent thread damage that could lead to blade separation in flight."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 expands the AD's applicability to include certain 2A36C23 propellers (specific serial numbers) installed on a range of Beech aircraft models, thereby widening the set of affected propellers and operators beyond the original listing."},"complexity_factors":["Narrow technical applicability by specific hub/blade models and multiple serial-number ranges (requires serial-number checking).","Conditional eligibility: applies only to units with ≥400 hours time-in-service and not reconditioned since new.","Relies on an external manufacturer document (McCauley Service Bulletin 151A) for inspection procedure and affected serials (cross-reference burden).","Compliance timing tied to the next maintenance release after a fixed date (administrative scheduling requirement).","Potential follow-on actions (repairs/reconditioning) are implied but not specified in the AD text, creating operational decision points for owners."],"plain_english_summary":"*Mandates a one‑time inspection of blade-retention threads on specified McCauley variable-pitch propellers (listed models and serial-number ranges) that have 400 or more hours and have not been reconditioned. Compliance is required at the next maintenance release after 31 March 1986.*\n\nThe AD references McCauley Service Bulletin 151A; aircraft owners/operators must arrange and bear the cost of the inspection and any corrective work if damage is found. The amendment adds certain 2A36C23 propellers installed on specified Beech aircraft to the affected fleet."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pmc-38-amdt-1-blade-and-ferrule-inspection","history":"/api/acts/ad-pmc-38-amdt-1-blade-and-ferrule-inspection/history","analysis":"/api/acts/ad-pmc-38-amdt-1-blade-and-ferrule-inspection/analysis","conflicts":"/api/acts/ad-pmc-38-amdt-1-blade-and-ferrule-inspection/conflicts","importantCases":"/api/acts/ad-pmc-38-amdt-1-blade-and-ferrule-inspection/important-cases","documents":"/api/acts/ad-pmc-38-amdt-1-blade-and-ferrule-inspection/documents"}}