{"id":"F2006B05907","name":"AD/PA-34/36 Amdt 3 - Rudder Torque Tube Attachment Fitting","slug":"ad-pa-34-36-amdt-3-rudder-torque-tube-attachment-fitting","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135975,"registerId":"commonwealth-F2006B05907-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-34/36 Amdt 3 - Rudder Torque Tube Attachment Fitting","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)  \nPiper PA-34 (Seneca) Series Aeroplanes\n\nAD/PA-34/36\n\nAmdt 3\n\n  \nRudder Torque Tube Attachment Fitting 9/92\n\nApplicability: Models PA 34-200 S/No 34-7250001 to 34-7450220, PA 34-200T S/No 34-7570001\n\nto 34-8170092, and PA 34-220T S/No 34-8133001 to 34-8533012.\n\nRequirement: 1. Establish if the rudder torque tube fitting is steel or aluminium.\n\n    2. (a) If steel, inspect for proper attachment, and check the bolt torque in accordance with the criteria and instructions in Piper SB 899. If fitting is improperly attached or bolt torque is incorrect, rectify in accordance with Piper SB 899.\n\n(b). If aluminium, replace with a steel fitting in accordance with the instructions in Piper SB 899.\n\n    3. If the steel fitting required by Requirement 2 (b) of this Directive has been ordered but is not available, as an interim until the fitting is available, accomplish the following:\n\n    (a). Visually inspect the aluminium fitting for corrosion. If any evidence of corrosion is found, remove and treat the corroded area in accordance with an acceptable process.\n\n    (b). Dye penetrant inspect the aluminium fitting for cracks. If found cracked, replace with an aluminium fitting found to be free from cracks and corrosion.\n\n    4. If the aluminium fitting is still fitted, visually inspect for proper attachment, cracks, and corrosion.\n\n    (a). If fitting is improperly attached or hardware is found loose, rectify in accordance with Piper SB 899.\n\n    (b). If any evidence of corrosion is found, remove and treat the corroded area in accordance with an acceptable process.\n\n    (c). If found cracked, replace with an aluminium fitting found to be free from cracks and corrosion; in accordance with the instructions in Piper SB 899.\n\nNote: FAA AD 92-08-04 Amdt 39-8215 refers.\n\nCompliance: 1. Prior to 23 August 1992.\n\n2. (a). Prior to 23 September 1992.\n\n2. (b) & 3. Unless already accomplished, prior to further flight after 23 August 1992.\n\n4. Within 50 hours time in service after 23 August 1992, and thereafter at intervals not to exceed 50 hours time in service; until Requirement 2(b) is accomplished.\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBackground: There has been a history of insufficient torque retention on the retaining bolts. This has led to hole elongation and crack propagation in the aluminium fitting.\n\nAmendment 2 required repetitive inspections until, in accordance with the Country of Origin AD, the now mandatory installation of a steel fitting was carried out. Amdt 3 is issued in response to an amendment to the FAA AD that relates to this Directive.\n\nThe FAA has determined that parts are currently not available to accomplish the modification required by AD 90-17-04 (the basis for the issue of AD/PA34/36 Amdt 2), and require specified actions be accomplished in order to maintain continuing airworthiness.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"The amendment modifies the earlier mandatory immediate installation of steel fittings by adding interim measures when steel parts are unavailable. Instead of requiring immediate replacement in all cases, it permits temporary inspections, corrosion treatment and dye‑penetrant crack checks until a steel fitting can be installed (see Requirements 2(b), 3 and Background). This relaxes the original timing for mandatory replacement while keeping recurring inspection obligations."},"complexity_factors":["Conditional branches depending on material: different actions if fitting is steel versus aluminium (Requirement 1–2).","Multiple remedy options: inspect/rectify, replace with steel, or perform interim corrosion/crack treatment if parts unavailable (Requirements 2–4, 3).","Short, staggered compliance deadlines and recurring inspection intervals (Compliance: deadlines before 23 Aug/23 Sep 1992; 50‑hour repetitive inspections until replacement).","Dependence on manufacturer's service bulletin (Piper SB 899) for procedural detail — cross‑reference required.","Technical inspection methods required (visual, dye‑penetrant) and corrosion treatment/replacement standards (Requirements 3–4).","Supply constraint contingency: amendment responds to unavailability of replacement parts, increasing administrative tracking and potential grounding risk (Background).","Traceability to FAA AD for normative content and amendment history (Note/Background).","Operational burden falls on operators/owners for parts procurement, labour and recurring inspections; regulatory discretion limited to specified acceptable processes for corrosion treatment."],"plain_english_summary":"This airworthiness directive applies to specific Piper PA‑34 (Seneca) aeroplanes and requires operators to check whether the rudder torque‑tube attachment fitting is steel or aluminium. If steel, verify attachment and bolt torque; if aluminium, replace with a steel fitting. If steel parts aren’t available, the directive mandates interim inspections and repairs until the steel fitting can be fitted. It matters because loose bolts and aluminium fitting degradation have led to hole elongation and cracking; owners/operators bear the inspection, repair and replacement costs."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"This is Amendment 3 to an existing directive. The original directive (implied to be AD/PA-34/36) required mandatory replacement of aluminium fittings with steel ones. Amendment 3 expands the scope by adding an interim compliance pathway (Requirements 3 and 4) because steel replacement parts became unavailable. This transforms the directive from a simple 'replace and forget' order into an ongoing inspection regime with repetitive 50-hour checks until parts become available and the permanent modification is done."},"complexity_factors":["Multiple conditional pathways (steel vs aluminium fitting, parts available vs unavailable)","Cross-reference to external technical document (Piper SB 899) without reproducing its contents","Nested requirements with sub-subsections (2(b), 3, 4(a)-(c))","Interim compliance pathway creating ongoing obligations until permanent fix accomplished","Specific serial number ranges for applicability requiring aircraft logbook verification","Reference to foreign regulatory instrument (FAA AD 92-08-04) for context"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of certain Piper PA‑34 Seneca twin‑engined aeroplanes (built ~1972–1985) to address a defective rudder torque‑tube attachment fitting. The unsafe aluminium fittings can crack, elongate, or lose bolts, risking loss of rudder control; the directive mandates replacement with stronger steel fittings or, until replacement, frequent inspections. It’s an urgent safety measure to prevent control‑loss accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-34-36-amdt-3-rudder-torque-tube-attachment-fitting","history":"/api/acts/ad-pa-34-36-amdt-3-rudder-torque-tube-attachment-fitting/history","analysis":"/api/acts/ad-pa-34-36-amdt-3-rudder-torque-tube-attachment-fitting/analysis","conflicts":"/api/acts/ad-pa-34-36-amdt-3-rudder-torque-tube-attachment-fitting/conflicts","importantCases":"/api/acts/ad-pa-34-36-amdt-3-rudder-torque-tube-attachment-fitting/important-cases","documents":"/api/acts/ad-pa-34-36-amdt-3-rudder-torque-tube-attachment-fitting/documents"}}