{"id":"F2006L03879","name":"AD/PW500/2 - Fuel Manifold Leakage","slug":"ad-pw500-2-fuel-manifold-leakage","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":60813,"registerId":"commonwealth-F2006L03879-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Pratt and Whitney Canada Turbine Engines","sectionType":"division","heading":"Pratt and Whitney Canada Turbine Engines - PW500 Series","content":"### Pratt and Whitney Canada Turbine Engines - PW500 Series\n\n| AD/PW500/2 | Fuel Manifold Leakage | 1/2007 |\n| ---------- | --------------------- | ------ |\n\n| Applicability: | Pratt & Whitney Canada (P&WC) PW535A model engines with serial numbersPCE-DC0143 and earlier, NOT incorporating P&WC Service Bulletin (SB) 30197 at revision 3 or earlier revision status.                                                                                                                                                                                                                                                                  |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Unless already accomplished in accordance with the instructions of P&WC SB 30197R3 or its earlier versions, replace fuel manifold, part number (P/N) 3052627-01 with a new fuel manifold P/N 3056404-01 in accordance with the instructions of P&WC alert service bulletin (ASB) A30314 dated 27 September 2006 or later Transport Canada approved revisions.Note: Transport Canada Airworthiness Directive number CF-2006-22 dated20 November 2006 refers. |\n| Compliance:    | For engines with fuel manifold, part number (P/N) 3052627-01, that has a total time since new (TTSN) of 1,500 flight hours or higher:Within 50 flight hours or 60 days after the effective date of this directive, whichever occurs first.For engines with fuel manifold P/N 3052627-01, that has less than TTSN of 1,500 flight hours:Within 150 flight hours or 90 days after the effective date of this directive, whichever occurs first.               |\n|                | This Airworthiness Directive becomes effective on 18 January 2007.                                                                                                                                                                                                                                                                                                                                                                                          |\n| Background:    | There have been three reported incidents of PW535A engines leaking fuel in service. Investigation revealed the manufacturing process of the fuel manifold introduced characteristics that have resulted in a loss of sealing at a crimped joint. PW535A engine fuel manifold leakage could result in engine fire, in-flight shutdown or damage to the airframe.                                                                                             |\n\n|     | P&WC ASB A30314 introduces a new manifold with an improved manufacturing process to rectify identified in-service leakage problem. |\n| --- | ---------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n24 November 2006","sortOrder":0},{"sectionNumber":"AD/PW500/2","sectionType":"part","heading":"AD/PW500/2","content":"## AD/PW500/2","sortOrder":1},{"sectionNumber":"Fuel Manifold Leakage","sectionType":"part","heading":"Fuel Manifold Leakage","content":"## Fuel Manifold Leakage","sortOrder":2},{"sectionNumber":"1/2007","sectionType":"part","heading":"1/2007","content":"## 1/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive’s scope is narrowly targeted to the engines and serial-number range identified and excludes engines already modified per SB 30197 R3 or earlier. The measure aligns with the stated problem (fuel-manifold sealing failures) and imposes replacement and tiered compliance times; the instrument text does not indicate an expansion or contraction of scope from its stated purpose."},"complexity_factors":["Applicability specificity: limited to PW535A engines with serial numbers PCE-DC0143 and earlier and excluding engines that have incorporated P&WC SB 30197 R3 or earlier (Applicability).","Requirement ties to external documents: mandates actions “in accordance with” P&WC ASB A30314 and references P&WC SB 30197R3 (Requirement).","Part-number specificity: direct replacement of a particular part (P/N 3052627-01 → P/N 3056404-01) which fixes a manufacturing/sealing issue (Requirement / Background).","Tiered compliance windows based on hardware age: separate deadlines if manifold TTSN is ≥1,500 hours (50 fh or 60 days) or <1,500 hours (150 fh or 90 days) (Compliance).","Cross-jurisdictional/reference complexity: notes Transport Canada AD CF-2006-22 and requires Transport Canada‑approved revisions of ASB (Requirement / Note).","Operational/compliance burden: replacement requires parts, labour and engine downtime; owners/operators bear the cost and scheduling burden (Requirement / Compliance).","Regulatory effect and timing: directive has a set effective date (18 January 2007) and is enforceable by the regulator (Compliance / Effective date)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Pratt & Whitney Canada PW535A engines (serial numbers PCE‑DC0143 and earlier, unless already modified under P&WC SB 30197 R3 or earlier) to replace fuel manifold P/N 3052627‑01 with P/N 3056404‑01 per P&WC ASB A30314. It addresses reported fuel leaks that could cause fire or in‑flight shutdown. Operators pay for and arrange the replacement and must comply within tiered deadlines based on the manifold’s total time since new (TTSN)."},"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, targeted Airworthiness Directive addressing a specific safety-of-flight issue (fuel manifold leakage). The scope remains precisely focused on the identified defect in the specified engine model and has not expanded beyond this original safety purpose."},"complexity_factors":["Single, specific technical requirement (replace one part)","Limited applicability scope (one engine model, specific serial number range, with exclusion for already-compliant engines)","Two-tier compliance schedule based on flight hours (simple binary condition)","References to external technical documents (Service Bulletin and Alert Service Bulletin) without reproducing their content","No nested exceptions or complex conditional logic","Short document (approximately 250 words of substantive content)","Standard AD structure with clearly labeled sections (Applicability, Requirement, Compliance, Background)"],"plain_english_summary":"This AD requires operators of Pratt & Whitney Canada PW535A engines (serial PCE‑DC0143 and earlier) to replace a faulty fuel manifold—unless the Service Bulletin 30197 rev.3 fix is already installed—because a crimping defect can cause fuel leaks leading to engine fire, in‑flight shutdown, or structural damage. Replacement must follow the manufacturer’s Alert Service Bulletin (install part 3056404‑01); compliance windows are time/flight‑hour limited based on manifold hours."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pw500-2-fuel-manifold-leakage","history":"/api/acts/ad-pw500-2-fuel-manifold-leakage/history","analysis":"/api/acts/ad-pw500-2-fuel-manifold-leakage/analysis","conflicts":"/api/acts/ad-pw500-2-fuel-manifold-leakage/conflicts","importantCases":"/api/acts/ad-pw500-2-fuel-manifold-leakage/important-cases","documents":"/api/acts/ad-pw500-2-fuel-manifold-leakage/documents"}}