{"id":"F2006B02472","name":"AD/AS 355/15 Amdt 1 - Sliding Door Ball Joint - Inspection and Modification","slug":"ad-as-355-15-amdt-1-sliding-door-ball-joint-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41728,"registerId":"commonwealth-F2006B02472-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AS 355/15 Amdt 1 - Sliding Door Ball Joint - Inspection and Modification","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)  \nEurocopter AS 355 (Twin Ecureuil) Series Helicopters\n\nAD/AS 355/15\n\nAmdt 1\n\n  \n\nSliding Door Ball Joint \\- Inspection and Modification\n\n  \n7/84\n\nApplicability: All models AS 355 equipped with sliding doors. Document: 1. Aerospatiale telex service 05.11 (Telex No. 7223 refers).\n\n2. Aerospatiale SB No. 52.01 (Modification AMS 350A.07.1353).\n\nCompliance: 1. Within 50 hours time in service after 5th September 1983 and thereafter at intervals not exceeding 300 hours time in service until modification AMS 07.1353 has been incorporated.\n\n2. Within 100 hours time in service after 31 July 1984 or at the next scheduled inspection for maintenance release issue after 31 July 1984 whichever is the later.\n\nBackground: Service Bulletin No. 52.01 modifies the sliding door ball joint and relieves the recurring ball joint disassembly. This requirement follows two cases of loss of a sliding door in flight.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1967},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope addressing sliding door ball joint integrity for AS 355 helicopters. The changes appear to be technical updates to document references or compliance intervals rather than an expansion of the regulatory scope."},"complexity_factors":["References to external technical documents (Aerospatiale Service Bulletin No. 52.01, Modification AMS 350A.07.1353)","Compliance deadlines measured in 'flight hours' (time in service) rather than simple calendar dates","Two separate compliance streams with conditional timing ('whichever is the later')"],"plain_english_summary":"This **Airworthiness Directive** (a mandatory safety order from the aviation regulator) applies to all **Eurocopter AS 355 helicopters** fitted with sliding doors.\n\n**The safety problem:**\nThe ball joints on sliding doors (the pivot mechanisms that let doors slide open and shut) can fail, causing doors to fall off during flight. This has already happened twice.\n\n**What operators must do:**\n1. **Inspect** the door ball joints within 50 flight hours after 5 September 1983, then reinspect every 300 flight hours until a specific fix is installed.\n2. **Install the modification** (called AMS 07.1353) within 100 flight hours after 31 July 1984, or at the next scheduled maintenance check—whichever occurs later.\n\n**Who this affects:**\nOwners and operators of AS 355 helicopters with sliding doors. **Time in service** means actual flight hours (not just calendar time). Until these steps are completed, the aircraft is not legally airworthy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-as-355-15-amdt-1-sliding-door-ball-joint-inspection-and-modification","history":"/api/acts/ad-as-355-15-amdt-1-sliding-door-ball-joint-inspection-and-modification/history","analysis":"/api/acts/ad-as-355-15-amdt-1-sliding-door-ball-joint-inspection-and-modification/analysis","conflicts":"/api/acts/ad-as-355-15-amdt-1-sliding-door-ball-joint-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-as-355-15-amdt-1-sliding-door-ball-joint-inspection-and-modification/important-cases","documents":"/api/acts/ad-as-355-15-amdt-1-sliding-door-ball-joint-inspection-and-modification/documents"}}