{"id":"F2006L03263","name":"AD/DA40/7 - Contamination of the Engine Fuel System","slug":"ad-da40-7-contamination-of-the-engine-fuel-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":60625,"registerId":"commonwealth-F2006L03263-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Diamond DA40 Series Aeroplanes","sectionType":"division","heading":"Diamond DA40 Series Aeroplanes","content":"### Diamond DA40 Series Aeroplanes\n\n| AD/DA40/7 | Contamination of the Engine Fuel System | 12/2006 TX |\n| --------- | --------------------------------------- | ---------- |\n\n| Applicability: | Diamond Aircraft Industries DA 40 aircraft:1. With aircraft serial numbers 40.448 through 40.673 inclusive, but excluding 40.538, 40.590, 40.641, 40.642, 40.644, 40.651, 40.654, 40.655 and 40.669; and2. Fitted with Garmin G1000 Integrated Avionics System in accordance with EASA STC.IM.A.S.01023 or FAA STC SA01254WI and have logged less than 50 hours total time since installation.                                                   |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Carry out the inspection for possible contamination of the engine fuel system in accordance with Diamond Aircraft Mandatory Service Bulleting (MSB) 40-048 Revision 1 dated 18 September 2006 or later EASA approved revisions.Note: EASA Emergency Airworthiness Directive (AD) number 2006-0295-E dated26 September 2006 refers.                                                                                                               |\n| Compliance:    | Within 10 flight hours from the effective date of this AD but not later than30 November 2006.                                                                                                                                                                                                                                                                                                                                                    |\n|                | This Airworthiness Directive becomes effective on 29 September 2006.                                                                                                                                                                                                                                                                                                                                                                             |\n| Background:    | During production installation of the Garmin G1000 STC (Integrated Avionics System) some parts of the installed fuel system indicating system were contaminated with particles from the manufacturing process, which may lead to improper engine operation, power loss or in-flight engine failure.In order to address identified unsafe condition, this AD requires a one time special inspection and rectification for the effected airplanes. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n28 September 2006","sortOrder":0},{"sectionNumber":"AD/DA40/7","sectionType":"part","heading":"AD/DA40/7","content":"## AD/DA40/7","sortOrder":1},{"sectionNumber":"Contamination of the Engine Fuel System","sectionType":"part","heading":"Contamination of the Engine Fuel System","content":"## Contamination of the Engine Fuel System","sortOrder":2},{"sectionNumber":"12/2006 TX","sectionType":"part","heading":"12/2006 TX","content":"## 12/2006 TX","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific manufacturing defect in a limited production run of aircraft. The scope has not expanded beyond the original safety issue identified."},"complexity_factors":["Narrow, highly specific applicability criteria requiring cross-referencing of serial numbers and two different STC (Supplemental Type Certificate) numbers","Dual compliance condition: 'within 10 flight hours' OR 'not later than 30 November 2006' — whichever occurs first","References external technical documents (Diamond Aircraft MSB 40-048 Revision 1, EASA AD 2006-0295-E) that contain the actual inspection procedures","Contains defined exceptions within the serial number range (9 specific serial numbers excluded from an otherwise continuous range)"],"plain_english_summary":"This CASA Airworthiness Directive mandates a one‑time inspection of engine fuel systems on certain Diamond DA40 aircraft (specific serial ranges) for contamination introduced during Garmin G1000 installations. It applies only to aircraft fitted with the G1000 that have flown less than 50 hours since that fitment.\n\nContamination must be cleaned if found. Compliance was mandatory by 30 November 2006 or within 10 flight hours (whichever came first); non‑compliance renders the aircraft unairworthy."},"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD is narrowly focused on detecting and removing fuel‑system contamination introduced during the Garmin G1000 STC installation. It does not broaden the regulatory scope beyond that original safety intent: it applies to a defined serial‑number range (with listed exclusions) and to aeroplanes with the specified STC and less than 50 hours since installation, mandates a one‑time inspection per a Diamond MSB, and sets a short compliance window. The measures remain within the original purpose of correcting a specific manufacturing/installation defect."},"complexity_factors":["Narrow and explicit applicability: single serial‑number range (40.448–40.673) with 10 individually excluded serial numbers","Additional applicability condition tied to a specific avionics STC (EASA STC.IM.A.S.01023 or FAA STC SA01254WI) and a <50 hour time‑since‑installation threshold","Single mandatory action (one‑time inspection and rectification) rather than continuing obligations","Short compliance window (10 flight hours or a hard calendar date) increases operational urgency but not legal complexity","Requirement references an external document (Diamond MSB 40‑048 Rev 1) and allows later EASA‑approved revisions — introduces cross‑reference dependency","Note referring to related EASA Emergency AD (2006‑0295‑E) — additional cross‑jurisdictional context but not additional procedural steps","No complex exemptions, appeal routes, or layered conditional logic beyond the applicability filters"],"plain_english_summary":"**What this directive does (mechanically)**\n\n- It requires a one‑time inspection of the engine fuel system for certain Diamond DA40 aeroplanes to check for contamination, and corrective action where contamination is found. (See Requirement.)\n- The inspection must be carried out exactly in accordance with Diamond Aircraft Mandatory Service Bulletin MSB 40‑048 Revision 1 dated 18 September 2006, or any later revision approved by EASA. (See Requirement.)\n- The inspection had to be completed within 10 flight hours after the AD became effective, but no later than 30 November 2006. The AD became effective on 29 September 2006. (See Compliance.)\n\n**Which aeroplanes are affected (who this hits)**\n\n- Only Diamond Aircraft Industries DA40 aeroplanes with serial numbers 40.448 through 40.673 inclusive, but excluding the listed serial numbers (40.538, 40.590, 40.641, 40.642, 40.644, 40.651, 40.654, 40.655 and 40.669). (See Applicability.)\n- In addition to the serial‑number filter, the aeroplane must be fitted with the Garmin G1000 Integrated Avionics System under the specific STC referenced (EASA STC.IM.A.S.01023 or FAA STC SA01254WI) and must have logged less than 50 hours total time since that G1000 installation. (See Applicability.)\n\n**Why this matters (stated safety concern and effect)**n\n- During the production installation of the Garmin G1000 STC, some fuel system parts became contaminated with particles from manufacturing. Contamination of the fuel system can lead to engine roughness, power loss, or in‑flight engine failure. The AD’s stated purpose is to detect and remove contamination to prevent those unsafe outcomes. (See Background.)\n\n**Who pays, who decides, and what changes in behaviour**\n\n- Aircraft operators (owners/maintainers) bear the direct cost: they must arrange for the inspection, and if contamination is found, pay for whatever rectification (parts, labour) the MSB prescribes. The operator also bears aircraft downtime while the action is completed. (See Requirement & Compliance.)\n- The Civil Aviation Safety Authority (via its delegate) issued the AD and sets the compliance timing; the technical steps to be followed are set out by Diamond in the referenced MSB and any later EASA‑approved revisions. (See Requirement.)\n- Behaviourally, affected operators must prioritise and schedule the specified inspection promptly (within 10 flight hours or by the date given) and follow the MSB’s instructions; maintenance organisations must follow the MSB and any EASA approval conditions when performing the work. (See Requirement & Compliance.)\n\n**Implementation mechanics and compliance burden**\n\n- The AD does not itself provide step‑by‑step inspection procedures; it mandates compliance with Diamond’s MSB 40‑048 Rev 1 (or later EASA‑approved revisions). That means operators need access to the MSB and, where applicable, an EASA approval for any later revision. (See Requirement.)\n- The compliance window is short (10 flight hours or the specified calendar date), so operators had to act quickly, which can cause scheduling pressure and potential disruption to flight operations. (See Compliance.)\n\n**Trade‑offs, incentives and practical risks**\n\n- Incentives: Operators are motivated to inspect quickly to remain airworthy and avoid the risk of in‑flight engine problems. Maintenance providers are incentivised to follow the MSB precisely because the AD references it.\n- Costs: Direct inspection and possible repair costs fall on operators/owners. There may also be indirect costs from aircraft downtime and from sourcing approved parts or qualified maintenance if the MSB requires specialist work.\n- Implementation risks: Reliance on an external MSB and later EASA approvals creates a dependency — ambiguity or delay in an approved MSB revision could complicate compliance. The cross‑reference to specific STCs and the <50‑hour condition creates a narrow applicability that requires accurate maintenance and installation records to determine whether an aeroplane is in scope.\n- Market effects: The measure is narrowly safety‑focused; it does not change ownership, competition, or operating rules beyond imposing a mandatory inspection for a defined subset of aeroplanes. There is no text in the AD suggesting any subsidy, fee, or change to commercial rights.\n\n**Source claims vs costs and trade‑offs**\n\n- The AD’s stated purpose is to remove contamination introduced during installation of the G1000 STC to prevent engine power loss or in‑flight failure (Background). That stated safety benefit is concrete and specific. The cost side — inspection time, repair costs, and operational disruption — is borne by operators and is not quantified in the text. The AD places on operators the obligation to comply within a short timeframe and to follow a manufacturer service bulletin that may require specialist maintenance resources.\n\n(Sections cited: Applicability; Requirement; Compliance; Background.)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-da40-7-contamination-of-the-engine-fuel-system","history":"/api/acts/ad-da40-7-contamination-of-the-engine-fuel-system/history","analysis":"/api/acts/ad-da40-7-contamination-of-the-engine-fuel-system/analysis","conflicts":"/api/acts/ad-da40-7-contamination-of-the-engine-fuel-system/conflicts","importantCases":"/api/acts/ad-da40-7-contamination-of-the-engine-fuel-system/important-cases","documents":"/api/acts/ad-da40-7-contamination-of-the-engine-fuel-system/documents"}}