{"id":"F2005L03931","name":"AD/DO 328/29 - Fuel Pump Wiring","slug":"ad-do-328-29-fuel-pump-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":39762,"registerId":"commonwealth-F2005L03931-current","compilationNumber":null,"startDate":"2026-04-01","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 328/29 | Fuel Pump Wiring | 1/2006 |\n| ------------ | ---------------- | ------ |\n\n| Applicability: | Model 328-100 aeroplanes with serial numbers 3005 to 3119 inclusive.                                                                                                                                                                  |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | If not previously accomplished, inspect and, if necessary, modify the left electric fuel pump wiring harness together with the fuel line in accordance with Fairchild Dornier Service Bulletin SB-328-24-391 dated 11 September 2001. |\n|                | Note: LBA AD 2002-049 refers.                                                                                                                                                                                                         |\n| Compliance:    | No later than the next A-Check after the effective date of this Directive.                                                                                                                                                            |\n|                | This Airworthiness Directive becomes effective on 19 January 2006.                                                                                                                                                                    |\n| Background:    | The German Luftfahrt-Bundesamt (LBA) has received advice from the aircraft manufacturer that wire harness from the left fuel pump may chafe against the fuel increasing the risk of consequent fire and/or explosion.                 |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n30 November 2005","sortOrder":0},{"sectionNumber":"AD/DO 328/29","sectionType":"part","heading":"AD/DO 328/29","content":"## AD/DO 328/29","sortOrder":1},{"sectionNumber":"Fuel Pump Wiring","sectionType":"part","heading":"Fuel Pump Wiring","content":"## Fuel Pump Wiring","sortOrder":2},{"sectionNumber":"1/2006","sectionType":"part","heading":"1/2006","content":"## 1/2006","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive keeps a narrow, safety‑focused scope: inspect and, if required, modify the left fuel pump wiring harness and adjacent fuel line on a defined set of Dornier 328‑100 serial numbers. It implements a manufacturer‑recommended fix and references the LBA AD; it does not expand to other systems, models, or broader regulatory requirements. Therefore the scope has not grown beyond the original safety remediation purpose described by the manufacturer and the foreign regulator."},"complexity_factors":["Short, single‑issue directive (inspect/modify fuel pump wiring)","Narrow applicability: one model and a contiguous serial number range (3005–3119)","Single external reference: Fairchild Dornier Service Bulletin SB‑328‑24‑391 (dated 11 Sep 2001)","Single compliance deadline tied to routine maintenance (next A‑Check) rather than multiple conditionals","Minimal conditionality: only applies \"if not previously accomplished\"","Cross‑reference to another regulator’s AD (LBA AD 2002‑049) but no layered exceptions or multiple parts"],"plain_english_summary":"**What this directive does (mechanics)**\n\n- Applies to Dornier 328‑100 aeroplanes with serial numbers 3005 to 3119 inclusive (Applicability).\n- Requires operators to inspect, and if necessary modify, the left electric fuel pump wiring harness and the adjacent fuel line in accordance with Fairchild Dornier Service Bulletin SB‑328‑24‑391 dated 11 September 2001 (Requirement).\n- The work must be done if it has not already been done, and no later than the next A‑Check after the directive takes effect (Compliance). The directive became effective 19 January 2006.\n- The directive explicitly notes that the German Luftfahrt‑Bundesamt (LBA) issued a related airworthiness directive (LBA AD 2002‑049) and that the manufacturer reported that the left fuel pump wiring harness may chafe against the fuel line, increasing the risk of fire or explosion (Background).\n\n**Who is affected**\n\n- Owners/operators of Dornier 328‑100 aircraft with serial numbers 3005–3119. Maintenance organisations and engineers who perform A‑Checks on those aircraft must carry out the inspection and any required modification.\n\n**Why it matters (stated purpose and practical implications)**\n\n- The stated safety purpose: prevent chafing of the left fuel pump wiring harness against the fuel line, which the manufacturer reported could raise the risk of fire or explosion (Background).\n\n- Practical implications for operators:\n  - Someone pays: the aircraft owner/operator pays for the inspection and for any modifications (parts, labour, and A‑Check downtime).\n  - Who decides: the Civil Aviation Safety Authority (via its delegate) issues the directive and requires compliance by the operator; the detailed technical work follows the manufacturer’s service bulletin cited in the Requirement.\n  - Behaviour change required: inspect the left fuel pump wiring harness and fuel line and carry out the modification prescribed by the service bulletin if the inspection identifies the condition or if the modification has not already been done.\n\n**Costs, incentives and trade‑offs**\n\n- Direct costs: inspection labour during the next A‑Check; if modification is needed, parts and additional labour and potentially extra grounding time beyond a routine check.\n- Timing incentive: requiring compliance by the next A‑Check allows operators to schedule work into routine maintenance, reducing immediate grounding risk but potentially deferring risk mitigation until the next check interval.\n- Implementation risk and compliance burden: the directive depends on operators having access to the service bulletin, spare parts and qualified maintenance personnel. If parts or approved modification kits are scarce, operators may face delays or additional costs.\n- Effect on private operators and competition: the rule imposes a uniform safety cost on all affected operators; there is no indicated exemption or subsidy. Smaller operators may feel the relative cost of downtime and modification more than larger fleets.\n\n**Notes on legal and operational detail**\n\n- The directive is written as a mandatory airworthiness requirement for the specified serial‑numbered fleet segment and applies only if the work has not been previously accomplished (Requirement).\n- The directive cross‑references the manufacturer’s service bulletin for technical steps; it does not reproduce the modification instructions (Requirement).\n- The directive references the LBA AD, indicating coordination with the German regulator (Background).\n\n(References: Applicability, Requirement, Compliance, Background, as stated in the directive.)"},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific safety defect in a specific aircraft type. It has not expanded beyond its original purpose of mandating a safety inspection and modification."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only one defined term implied ('A-Check' — a standard aviation maintenance term)","Single, straightforward requirement with clear conditional ('if not previously accomplished')","No cross-referencing to other legislation or complex conditional logic","Clear applicability criteria (specific serial number range)","Single compliance deadline tied to existing maintenance schedule"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order for aircraft. It applies to specific **Dornier 328-100 aeroplanes** (serial numbers 3005 to 3119).\n\n**What it requires:**\n- Aircraft owners/operators must **inspect the wiring** for the left electric fuel pump\n- If problems are found, they must **modify the wiring harness and fuel line**\n- The work must follow a specific manufacturer's bulletin (Fairchild Dornier SB-328-24-391)\n\n**Why it matters:**\nThe German aviation authority discovered that the fuel pump wiring could **rub against the fuel line** (called \"chafing\"). This creates a serious risk of **fire or explosion** — obviously catastrophic for an aircraft.\n\n**When it must be done:**\nBy the next **A-Check** (a routine maintenance inspection) after 19 January 2006.\n\n**Who issued it:**\nJames Coyne, acting on behalf of Australia's **Civil Aviation Safety Authority (CASA)** — the government body that regulates aviation safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-328-29-fuel-pump-wiring","history":"/api/acts/ad-do-328-29-fuel-pump-wiring/history","analysis":"/api/acts/ad-do-328-29-fuel-pump-wiring/analysis","conflicts":"/api/acts/ad-do-328-29-fuel-pump-wiring/conflicts","importantCases":"/api/acts/ad-do-328-29-fuel-pump-wiring/important-cases","documents":"/api/acts/ad-do-328-29-fuel-pump-wiring/documents"}}