{"id":"F2006L01026","name":"AD/DO 328/58 - Control Cables","slug":"ad-do-328-58-control-cables","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":58303,"registerId":"commonwealth-F2006L01026-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Dornier 328 Series Aeroplanes","sectionType":"division","heading":"Dornier 328 Series Aeroplanes","content":"### Dornier 328 Series Aeroplanes\n\n| AD/DO 328/58 | Control Cables | 5/2006 |\n| ------------ | -------------- | ------ |\n\n| Applicability: | Dornier 328-100 aeroplanes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Carry out inspection of the control cables for signs of chafing and replace parts if exceeding wear limits.2. Carry out inspection of the fairleads/swivel guides for signs of wear and rectify any defects found.3. Carry out adjustment of Auto Pilot control cables to new tension at initial inspection.Carry out the above requirements in accordance with Dornier 328 Alert Service Bulletin No. ASB-328-00-011 Revision 2 dated 1 August 2000 or later LBA approved revision.Alternative Means of Compliance.If Honeywell SB 4005842-22-3, Dornier SB 328-27-290, SB 328-27-291 and SB 328-27-292 are performed implementation of paragraph 1 of Dornier 328ASB-328-00-011 Revision 2 is not required.If Dornier SB 328-27-253 has been performed implementation of paragraph2c of Dornier 328 ASB-328-00-011 Revision 2 is not required.If Dornier SB 328-27-253 has been performed implementation of paragraph3 of Dornier 328 ASB-328-00-011 Revision 2 is not required.If Dornier SB 328-76-152 and SB 328-76-168 are performed implementation of paragraph4 of Dornier 328 ASB-328-00-011 Revision 2 is not required.Note: LBA AD 1996-001/4 refers. |\n| Compliance:    | 1. Unless previously accomplished perform the initial inspection at 4000 Flight Hours (C-Check).Repeat at intervals not to exceed 2000 FH (5A-Check).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |\n\n|             | 2. Unless previously accomplished perform the initial inspection at 4000 Flight Hours (C-Check).Repeat at intervals not to exceed 2000 FH (5A-Check).3. Unless previously accomplished perform the initial inspection at 4000 Flight Hours (C-Check).Repeat at intervals not to exceed 2000 FH (5A-Check). |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|             | This Airworthiness Directive becomes effective on 11 May 2006.                                                                                                                                                                                                                                             |\n| Background: | This AD is in response to reports of possible chafing of: the autopilot control cables, elevator and rudder control cables, aileron and engine control cables. Chafing can lead to the failure of the cables and subsequent loss of control of the relevant system.                                        |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n17 March 2006","sortOrder":0},{"sectionNumber":"AD/DO 328/58","sectionType":"part","heading":"AD/DO 328/58","content":"## AD/DO 328/58","sortOrder":1},{"sectionNumber":"Control Cables","sectionType":"part","heading":"Control Cables","content":"## Control Cables","sortOrder":2},{"sectionNumber":"5/2006","sectionType":"part","heading":"5/2006","content":"## 5/2006","sortOrder":3}],"analysis":{"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":"The AD retains a narrow, safety‑focused scope: inspections and corrective work on control cables of Dornier 328-100 aeroplanes. It does not expand the subject matter beyond the original safety objective (preventing cable chafing and resultant failures). The primary substantive change relative to earlier manufacturer guidance is to make certain inspections mandatory at specified intervals while permitting a set of documented alternative means of compliance (specified service bulletins). Those alternatives constrain obligations rather than enlarge the AD’s application to additional systems or aircraft types. Therefore the scope has not significantly changed beyond the original safety intent (Requirement; Alternative Means of Compliance; Background)."},"complexity_factors":["Short document focused on a single aircraft type (Dornier 328-100).","Few substantive requirements (three inspection/repair actions and a cable tension adjustment).","Clear compliance schedule: initial at 4,000 flight hours, repeat every 2,000 flight hours. (simple timing logic)","Several cross-references to external documents: Dornier Alert Service Bulletin ASB-328-00-011 Rev 2 (or later LBA-approved revision), multiple Dornier Service Bulletins (SB 328-27-253, SB 328-27-290/291/292, SB 328-76-152, SB 328-76-168), and Honeywell SB 4005842-22-3 — adds moderate complexity because operators must track those documents.","Conditional logic for alternative compliance: specified SBs exempt particular paragraphs — there are multiple discrete conditional exemptions (paragraphs 1, 2c, 3, 4).","Reference to an LBA AD (LBA AD 1996-001/4) adds a foreign-authority cross-reference to monitor.","Some repetition/formatting issues in the published text (compliance paragraphs repeated) which can cause minor interpretive effort for readers."],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- **Who it applies to:** Operators of Dornier 328-100 aeroplanes. (Applicability)\n- **Mandatory actions:** Requires inspections of multiple flight control cables for chafing (wear caused by rubbing) and replacement of any parts that exceed wear limits; inspection and remediation of fairleads/swivel guides (parts that guide cables); and an adjustment of autopilot control-cable tension at the initial inspection. (Requirement)\n- **When to do it:** Initial inspections must be performed at 4,000 flight hours (during a C‑check) unless already done, and then repeated at intervals not exceeding 2,000 flight hours (5A‑check). (Compliance)\n- **Alternative compliance:** If certain manufacturer or equipment supplier service bulletins have been performed (Honeywell SB 4005842-22-3, various Dornier SBs listed), some parts of the required inspections are not required. The AD also refers to an LBA (German authority) AD and allows later LBA‑approved revisions of the listed Dornier Alert Service Bulletin. (Requirement — Alternative Means of Compliance)\n- **Effective date:** Becomes effective 11 May 2006. (Compliance)\n\n**Why the rule is in place (official rationale)**\n\n- The AD responds to reported chafing of autopilot, elevator, rudder, aileron and engine control cables. Chafing can cause cable failure and consequent loss of control of the affected system. (Background)\n\n**Who pays, who decides, and what changes in behaviour**\n\n- **Who pays:** Aircraft operators pay. Costs are labour for inspections, parts if replacements are needed, and possible aircraft downtime to fit inspections into C‑checks/5A‑checks.\n- **Who decides/complies:** Operators (and their maintenance organisations) must perform the inspections and corrective actions; compliance is assessed against Dornier Alert Service Bulletin ASB-328-00-011 Rev 2 (or later LBA‑approved revision) and the alternative service bulletins listed. The regulator enforces compliance. (Requirement; Alternative Means of Compliance)\n- **Behaviour change:** Operators must schedule the required inspections into maintenance cycles (initial at 4,000 FH and repeat every 2,000 FH) or implement the listed alternative service bulletins which change the required work.\n\n**Costs, incentives, trade-offs and practical implementation issues**\n\n- **Direct costs:** Increased maintenance cost and possible parts replacement. The AD ties the inspections to heavy maintenance events (C‑check) and intermediate checks (5A), which reduces the need for extra shop visits but still raises overall maintenance cost when wear is found.\n- **Incentives:** Operators can reduce recurring inspection obligations by performing the alternative service bulletins listed; that creates an incentive to invest in those corrective mod/SBs if they are cost‑effective relative to recurrent inspections or higher replacement risk.\n- **Trade‑offs:** The AD trades operator cost and aircraft downtime for reduced risk of in‑flight cable failure. The requirement is mechanical and prescriptive about inspections and intervals rather than offering a purely performance‑based rule, although it does permit specific alternative means of compliance.\n- **Implementation risks:** Detection depends on inspection quality (risk of missed chafing), availability of replacement parts or approved repairs, and accurate maintenance records. Cross‑jurisdiction references (LBA AD and LBA‑approved revisions) require operators to track approvals and revisions.\n- **Compliance burden and distribution:** Burden is spread across all Dornier 328‑100 operators (diffuse costs). Benefits (reduced risk of cable failure) are concentrated on aircraft occupants and operators in terms of avoided incidents. Suppliers of replacement parts and maintenance services may see increased demand (concentrated commercial benefit).\n- **Effects on private enterprise:** The AD increases ongoing operating costs for affected aircraft and creates demand for maintenance and parts suppliers. Larger operators with in‑house maintenance or more predictable maintenance schedules may be better able to absorb or optimise the costs.\n\n**How the official purpose holds up against these considerations**\n\n- The stated purpose is to prevent cable chafing and consequent cable failure. The required inspections, replacement thresholds, and optional alternative SBs are direct, mechanical means to reduce that risk. The main remaining risks are inspection quality and supply/maintenance logistics. The alternative SB pathway mitigates recurring inspection cost but shifts cost to upfront mod/repair work if adopted. (Requirement; Alternative Means of Compliance; Background)\n\n"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing specific control cable wear issues in Dornier 328-100 aircraft. The alternative compliance pathways do not expand the scope but rather provide flexibility for operators who have already performed equivalent safety modifications."},"complexity_factors":["Multiple alternative compliance pathways (4 different service bulletins referenced as alternatives)","Cross-references to external technical documents (Dornier Alert Service Bulletin ASB-328-00-011 Revision 2, plus 6 other service bulletins)","Nested conditional logic in alternative means of compliance (if X done, then Y not required)","Technical aviation terminology requiring specialised knowledge (fairleads, 5A-Check, C-Check, flight hours)","Repetitive formatting errors in source text creating parsing difficulties"],"plain_english_summary":"This CASA Airworthiness Directive targets Dornier 328‑100 operators, requiring inspections and replacement of chafed control cables, fairleads and swivel guides (and a one‑time tighter autopilot cable adjustment) to prevent cable failure and loss of flight‑control or engine systems. First inspection is due by 4,000 flight hours and repeats every 2,000 hours. Credit is allowed for equivalent work already done under specified Honeywell/Dornier service bulletins."}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-328-58-control-cables","history":"/api/acts/ad-do-328-58-control-cables/history","analysis":"/api/acts/ad-do-328-58-control-cables/analysis","conflicts":"/api/acts/ad-do-328-58-control-cables/conflicts","importantCases":"/api/acts/ad-do-328-58-control-cables/important-cases","documents":"/api/acts/ad-do-328-58-control-cables/documents"}}