{"id":"F2006B06802","name":"AD/SC7/29 - Flight Control Systems Rods","slug":"ad-sc7-29-flight-control-systems-rods","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114659,"registerId":"commonwealth-F2006B06802-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nShorts SC7 Skyvan Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/SC7/29 Flight Control Systems Rods 5/","sectionType":"part","heading":"AD/SC7/29 Flight Control Systems Rods 5/2003","content":"# AD/SC7/29 Flight Control Systems Rods 5/2003\n\nApplicability: All SC7 aircraft, except aircraft which are being inspected in accordance with Shorts Mandatory Service Bulletin 27-74.\n\nRequirement: Inspect in accordance with Shorts Mandatory Service Bulletin No. 27-77.\n\nCompliance: Before 1 September 2003, unless already accomplished. Repeat thereafter in accordance with Maintenance Program Section 2 Chapter 27.\n\nThis Airworthiness Directive becomes effective on 15 May 2003.\n\nBackground: The manufacturer received reports of pitting corrosion, stress corrosion, and cracking of flight control system rods on in-service aircraft.\n\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 27 March 2003\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 23 April 2003.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific airworthiness concern (flight control rod corrosion/cracking) on a specific aircraft type (Shorts SC7). There is no evidence of scope creep; it is a targeted safety intervention typical of the AD system."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined applicability condition (all SC7 aircraft except those under SB 27-74)","Single requirement referencing an external technical document (Shorts MSB 27-77)","Simple compliance deadline structure (fixed date with recurring interval thereafter)","No nested exceptions, conditional logic, or cross-references to other legislation","Straightforward background explaining the safety rationale"],"plain_english_summary":"This AD requires Shorts SC7 Skyvan operators to inspect flight‑control metal rods for corrosion, stress corrosion and cracking per Shorts Mandatory Service Bulletin No. 27‑77, because failures could cause loss of control. Aircraft already inspected under MSB 27‑74 are exempt.\n\nInspections must be completed before 1 September 2003 (if not already) and then repeated as specified in the maintenance program. Compliance is mandatory — non‑compliant aircraft cannot fly in Australia."},"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No change of scope is indicated in the provided text. The AD sets inspections for all SC7 aircraft except those already inspected per SB 27‑74, prescribes use of SB 27‑77, and requires initial and recurring compliance as stated (Applicability; Requirement; Compliance)."},"complexity_factors":["Narrow, equipment‑specific focus limited to flight control rods (Requirement; Background).","Dependency on external technical documents — Mandatory Service Bulletin No. 27‑77 prescribes the inspection procedure (Requirement).","Exclusion clause referencing a different service bulletin for already‑inspected aircraft (Applicability).","Recurring inspection obligation tied into Maintenance Program Section 2 Chapter 27, requiring ongoing maintenance planning (Compliance).","Delegated regulatory authority under CASR subreg 39.1(1) — administrative formality but important for enforceability (front matter/signature)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Shorts SC7 Skyvan aircraft to inspect flight‑control rods for pitting, stress corrosion and cracking, using Shorts Mandatory Service Bulletin No. 27‑77. It applies to all SC7s except aircraft already being inspected under Shorts Mandatory Service Bulletin 27‑74 (Applicability; Requirement).\n\nOperators pay the inspection and any repair costs; the AD was issued by the CASA delegate under CASR subreg 39.1(1). Initial compliance was required before 1 September 2003, with repeats per the aircraft maintenance program (Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sc7-29-flight-control-systems-rods","history":"/api/acts/ad-sc7-29-flight-control-systems-rods/history","analysis":"/api/acts/ad-sc7-29-flight-control-systems-rods/analysis","conflicts":"/api/acts/ad-sc7-29-flight-control-systems-rods/conflicts","importantCases":"/api/acts/ad-sc7-29-flight-control-systems-rods/important-cases","documents":"/api/acts/ad-sc7-29-flight-control-systems-rods/documents"}}