{"id":"F2006B07519","name":"AD/TURBO/1 - Roto-Master (Rajay Industries, Inc.) Turbochargers - Inspection and Replacement","slug":"ad-turbo-1-roto-master-rajay-industries-inc-turbochargers-inspection-and-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50041,"registerId":"commonwealth-F2006B07519-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TURBO/1 - Roto-Master (Rajay Industries, Inc.) Turbochargers - Inspection and Replacement","content":"![](image.001.png)  \nTurbochargers\n\nAD/TURBO/1 Roto-Master (Rajay Industries, Inc.)\n\nTurbochargers \\- Inspection and Replacement\n\n  \n3/83\n\nApplicability: Rajay Model 325E10 and 3AT6EE10J2 turbochargers, installed on but not limited to: Continental Engine Models TSIO-360, O-470, IO-470, IO-520, TIO-520; Lycoming Engine Models O-320, IO-320, LIO-320, O-360, IO-360, TO-360, O-540, IO-540,\n\nTIO-540. These engines are installed on, but not limited to the following Aircraft: Piper PA-28R-201T, PA-28-RT-201T, PA-28-201T series; PA-34-200, PA-34-200T\n\nseries; PA-30 and \\-39 series; Mooney M-20A thru K series; Lake LA-4, LA-4A and LA-200 Series.\n\nRequirement: PART 1: Inspect the engine turbocharger exhaust systems and determine whether or not the turbine housing Rajay P/N TC-60-11 or Rajay P/N 600510, 600510-01, 600510-02 or TCM P/N 643930 of turbocharger model 325E10 or 3AT6EE10J2 is installed.\n\nPART 2: If any of the part numbers listed in Part 1 are installed, or if the turbine housing part number cannot be determined, carry out the following inspections:\n\n    (a) Remove the turbocharger turbine housing exhaust coupling V-Band and tailpipes (see Figure 1).\n\n    (b) Visually inspect the turbocharger turbine housing for cracks using a dye penetrant inspection method.\n\nNote: The suspect area can be viewed through the exhaust port to ascertain possible presence of cracks penetrating through the outer wall as shown in Figure 2.\n\n    (c) Inspect coupling V-Band clamp for cracks by spreading the band segments and checking for failed spot welds and for indication of exhaust flanges bottoming in coupling V-Band (see Figure 1) and clamp bolt for bending, overstress, thread damage, and cracks (see Figure 1).\n\n    (d) Inspect turbochargers and tailpipe flanges for cracks and distortion (see Figure 1). Remove all carbon deposits from mating flanges before reassembly.\n\n    (e) Inspect mating area of turbocharger exhaust flange to exhaust tailpipe connection for proper mating of surfaces.\n\n    (f) Inspect engine mount for indication of overheat, warpage, and corrosion, or rust. Repair as required.\n\n    (g) If during inspection required by paragraph (b), an internal crack is found that either exceeds the limit shown in Figure 2, View 1 or 2, or a crack penetrates the outer wall of a turbine housing as shown in Figure 2, View 3, the existing turbine housing must be removed from service and replaced with a serviceable turbine housing prior to the next flight.\n\n    (h) If during the inspections required by paragraphs (c) through (f), cracked distorted, or otherwise damaged parts, components, or assemblies are found, before further flight repair or replace with serviceable parts, components and assemblies of the same part number.\n\nNote: FAA AD 82-27-03 refers.\n\nCompliance: PART 1: Within 50 hours time in service after 31 March 1983.\n\nPART 2: Before further flight after compliance with Part 1 of this Directive and thereafter at intervals of 200 hours time in service.\n\nThe inspections required by this Directive may be discontinued when the turbine housing is replaced with a Roto-master P/No. 600510-04 (TCM P/N 643931).\n\nBackground: To prevent the possibility of a fire in the powerplant nacelle and/or heat damage to the powerplant installation caused by the engine exhaust gases escaping through a cracked turbocharger turbine housing.\n\n![](image.002.png)\n\n![](image.003.png)  \n\n![](image.004.png)\n\n![](image.005.png)  \n\n![](image.006.png)","sortOrder":0}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific safety defect in specific Rajay turbocharger models installed on specific aircraft types. The scope has not expanded beyond the original safety concern of cracked turbine housings causing exhaust leaks."},"complexity_factors":["Straightforward two-part compliance structure (initial inspection + recurring inspections)","Specific part number identification required (7 different part numbers to check)","Visual and dye penetrant inspection procedures with reference to figures (not provided in text)","Clear pass/fail criteria for crack dimensions and penetration","Single exemption condition (replacement with 600510-04/643931 ends compliance obligation)","No nested definitions or extensive cross-referencing to other legislation","Reference to one external FAA AD (82-27-03) for additional context"],"plain_english_summary":"This AD mandates owners/operators of aircraft fitted with Rajay Model 325E10 and 3AT6EE10J2 turbochargers (common on certain Piper, Mooney and Lake models) to inspect turbine housings for cracks and related hardware for damage, and to replace any defective parts to prevent hot-exhaust leaks and engine fires. Inspections recur until the housing is replaced with part 600510-04 (TCM 643931), after which recurring checks are no longer required."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope remains targeted to specific Rajay turbocharger models and part numbers installed on listed engine/aircraft types to mitigate exhaust-leak fire/heat risk. The directive does not expand coverage beyond those parts and installations; it sets inspection, repair, replacement and an exemption path upon fitting the stated replacement housing."},"complexity_factors":["Specific part-number applicability (Rajay P/Ns TC-60-11, 600510 series, TCM P/Ns) requires parts verification or treating unknowns as affected","Technical inspection method required (dye penetrant) and reliance on visual limits shown in referenced figures for crack acceptance","Multiple discrete inspection targets (turbine housing, V-band clamp, clamp bolt, tailpipe flanges, engine mount) increasing labour scope","Time-based compliance (initial 50 hours, then 200-hour recurring intervals) and a replace-before-flight mandate for certain defects","Ability to discontinue inspections only after retrofit to a specific replacement part (P/N 600510-04) creates a conditional compliance path","References to external FAA AD and pictorial figures for defect thresholds add reliance on accompanying materials"],"plain_english_summary":"**Requires owners/operators of aircraft fitted with specified Rajay turbochargers to inspect turbine housings and related exhaust fittings (V-band clamps, tailpipes and mounts) using visual and dye‑penetrant methods, remove cracked or damaged parts and replace turbine housings before further flight, and then repeat inspections every 200 hours.**\n\nThe directive says its purpose is to prevent fire or heat damage from exhaust leaks; operators pay for inspections, repairs and replacements, may be grounded until defects are fixed, and may stop inspections after fitting the specified replacement housing (P/N 600510-04)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-turbo-1-roto-master-rajay-industries-inc-turbochargers-inspection-and-replacement","history":"/api/acts/ad-turbo-1-roto-master-rajay-industries-inc-turbochargers-inspection-and-replacement/history","analysis":"/api/acts/ad-turbo-1-roto-master-rajay-industries-inc-turbochargers-inspection-and-replacement/analysis","conflicts":"/api/acts/ad-turbo-1-roto-master-rajay-industries-inc-turbochargers-inspection-and-replacement/conflicts","importantCases":"/api/acts/ad-turbo-1-roto-master-rajay-industries-inc-turbochargers-inspection-and-replacement/important-cases","documents":"/api/acts/ad-turbo-1-roto-master-rajay-industries-inc-turbochargers-inspection-and-replacement/documents"}}