{"id":"F2006B06387","name":"AD/PW100/8 - Fuel Manifolds","slug":"ad-pw100-8-fuel-manifolds","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47681,"registerId":"commonwealth-F2006B06387-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PW100/8 - Fuel Manifolds","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPratt and Whitney Canada Turbine Engines \\- PW100 Series\n\nAD/PW100/8 Fuel Manifolds 3/97\n\nApplicability: All PW100 series engines.\n\nRequirement: Install new fuel manifold transfer tubes and new lockplates in accordance with Pratt and Whitney Canada Service Bulletins, 21077R7 dated 10 October 1996 and 21373R3 dated 11 October 1996, respectively.\n\nNote1: Later revisions of the referenced service bulletins or superseding service bulletins that meet the intent of the referenced service bulletins satisfy the requirements of this Directive.\n\nNote2: Transport Canada AD CF-96-22 refers.\n\nCompliance: Unless previously accomplished:-\n\n    (a) At the next engine shop visit; or\n\n    (b) No later than the next fuel nozzle change; or\n\n    (c) Prior to 30 November 1998; whichever occurs first.\n\nThis Directive becomes effective 27 February 1997.\n\nBackground: There have been reports of fuel leaks which have resulted in fire warnings and inflight shutdowns. The majority of these fuel leaks have occurred shortly after fuel manifold maintenance. The manufacturer has advised that the fuel manifold transfer tube lockplates are sensitive to installation errors and are a contributing factor to the fuel leaks.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive remains tightly scoped to its original safety purpose: addressing a specific mechanical defect in PW100 engine fuel manifolds. The applicability, requirement, and compliance provisions all align with standard AD format and the documented safety risk."},"complexity_factors":["Single, specific mechanical requirement (replace two named components)","Only 3 compliance pathways with a clear 'whichever occurs first' trigger","Minimal defined terms (only 'applicability' and 'compliance' as standard AD structure)","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998 citation","Two brief notes providing standard flexibility on acceptable documentation versions","Background section provides clear causal explanation rather than legal reasoning"],"plain_english_summary":"Australia's Civil Aviation Safety Authority orders replacement of specific fuel‑system parts on Pratt & Whitney Canada PW100 engines to prevent installation errors that have caused fuel leaks, in‑flight engine fires and emergency shutdowns.\n\nOperators using PW100 engines must install the improved parts at the next workshop visit, at the next fuel‑nozzle change, or by 30 November 1998 (whichever is first). Later manufacturer procedures are acceptable if they deliver the same safety outcome."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive’s scope is consistent with its stated text: it applies to all PW100 engines and mandates replacement of specified parts per the referenced service bulletins, with three alternative compliance triggers and a fixed final date (Applicability; Requirement; Compliance). No narrowing or expansion beyond that wording is evident in the instrument provided."},"complexity_factors":["Single, specific technical change (install new transfer tubes and lockplates) reduces legal drafting complexity (Requirement).","Relies on external technical documents (Pratt & Whitney Canada Service Bulletins) for implementation details and permits later revisions that meet intent (Note1).","Multiple compliance triggers (next shop visit; next fuel nozzle change; deadline) require scheduling decisions by operators (Compliance).","Applies fleet‑wide to all PW100 engines, increasing administrative reach though not the number of different actions required (Applicability).","Depends on maintenance records and shop procedures to demonstrate compliance; cross‑refers to an overseas AD (Note2)."],"plain_english_summary":"This airworthiness directive requires installation of new fuel manifold transfer tubes and new lockplates on all Pratt & Whitney PW100 series engines, to be done following the manufacturer’s service bulletins (Requirement; Applicability). It affects aircraft operators and maintenance organisations, who must buy parts and perform the work at the next engine shop visit or fuel nozzle change, or by 30 November 1998—whichever happens first (Compliance). The stated aim is to reduce post‑maintenance fuel leaks (Background)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pw100-8-fuel-manifolds","history":"/api/acts/ad-pw100-8-fuel-manifolds/history","analysis":"/api/acts/ad-pw100-8-fuel-manifolds/analysis","conflicts":"/api/acts/ad-pw100-8-fuel-manifolds/conflicts","importantCases":"/api/acts/ad-pw100-8-fuel-manifolds/important-cases","documents":"/api/acts/ad-pw100-8-fuel-manifolds/documents"}}