{"id":"F2006B09673","name":"AD/F27/103 Amdt 7 - Structural Limitations","slug":"ad-f27-103-amdt-7-structural-limitations","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115810,"registerId":"commonwealth-F2006B09673-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F27/103 Amdt 7 - Structural Limitations","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)  \nFokker F27 Series Aeroplanes\n\nAD/F27/103\n\nAmdt 7\n\n  \nStructural Limitations 6/95\n\nApplicability: All F27 Aircraft, all Models. Requirement: 1. Inspect, modify or retire:\n\n    (a) Airframe parts as specified in Fokker Structural Integrity Program (SIP) Document 27438 Revision 11,\n\n    (b) Main landing gear components as specified in Dowty Rotol Service Bulletin No 32-152B, Revision 7,\n\n    (c) Nose landing gear components as specified in Dowty Rotol Service Bulletin No 32-154B Revision 4.\n\n2. Retire the airframe from service before exceeding 90 000 flights.\n\nNote 1: Load variability factors derived from Fatigue Meter and operational records may not be used in connection with the times specified in the SIP Document without the specific approval of the Authority.\n\nNote 2: In spite of the allowable crack lengths and crack propagation data which may be provided by the manufacturer, an aircraft shall not be returned to service with known unrepaired cracks without the approval of the Authority or of the operator’s authorised structures design signatory.\n\nCompliance: This amendment is effective from 25 May 1995.\n\nBackground: Amendment 6 references the latest revisions of the reference documents.\n\nAmendment 7 removes reference to ‘subsequent amendment’ documentation, and reformats the text of the AD.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2349},"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"Amendment 7 is an administrative and drafting revision only. It removes references to 'subsequent amendment' documentation and reformats the text, but does not expand or alter the substantive safety requirements, applicability, or original regulatory intent of the directive."},"complexity_factors":["Extensive reliance on external technical engineering documents (Fokker SIP Document and Dowty Rotol Service Bulletins) not reproduced in the instrument","Multiple alternative compliance pathways (inspect, modify, OR retire) requiring professional engineering judgment","Absolute mandatory retirement threshold (90,000 flights) with prohibition on extension","Nested approval requirements requiring regulatory or delegated authority sign-off for exceptions (crack repairs and load variability calculations)","Technical terminology requiring specialised aviation engineering knowledge to interpret"],"plain_english_summary":"This mandatory Airworthiness Directive covers all Fokker F27 aircraft in Australia, requiring inspection, repair or retirement of airframe and landing-gear components to the specific Fokker and Dowty Rotol documents, and permanent removal from service before 90,000 flights.\n\nOperators cannot use flight-data or fatigue-meter allowances to extend that limit, and aircraft with known unrepaired cracks may not fly without CASA or an authorised structural engineer’s approval. Amendment 7 removes permissive wording so only the exact listed document revisions apply."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f27-103-amdt-7-structural-limitations","history":"/api/acts/ad-f27-103-amdt-7-structural-limitations/history","analysis":"/api/acts/ad-f27-103-amdt-7-structural-limitations/analysis","conflicts":"/api/acts/ad-f27-103-amdt-7-structural-limitations/conflicts","importantCases":"/api/acts/ad-f27-103-amdt-7-structural-limitations/important-cases","documents":"/api/acts/ad-f27-103-amdt-7-structural-limitations/documents"}}