{"id":"F2006B06379","name":"AD/PW100/10 - Inter-Compressor Case Fire - Containment","slug":"ad-pw100-10-inter-compressor-case-fire-containment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47655,"registerId":"commonwealth-F2006B06379-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nPratt and Whitney Canada Turbine Engines \\- PW100 Series","sortOrder":0},{"sectionNumber":"AD/PW100/10 Inter-Compressor Case Fire -","sectionType":"part","heading":"AD/PW100/10 Inter-Compressor Case Fire - Containment 5/2002","content":"# AD/PW100/10 Inter-Compressor Case Fire \\- Containment 5/2002\n\nApplicability: All Pratt and Whitney Canada (P&WC) PW118, PW120, PW120A, and PW121 engines not incorporating P&WC SB 20914.\n\nRequirement: Action per P&WC SB 20914 Revision 4 dated 14 December 2001.\n\nNote: Transport Canada AD CF-2002-10 refers.\n\nCompliance: At the next scheduled engine shop visit, or before 31 December 2003, which ever occurs first.\n\nThis Airworthiness Directive becomes effective on 16 May 2002.\n\nBackground: P&WC SB 20914 helps to contain an intercompressor case fire. AD/PW100/5 made this SB mandatory for high-powered PW100 series engines. This AD extends the applicability to some additional PW100 series engines. AD/PW100/6 mandates a set of modifications to prevent the occurrence of intercompressor case fire.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 3 April 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 24 April 2002.","sortOrder":1}],"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":true,"description":"This directive expands the mandatory application of P&WC SB 20914 beyond the high‑powered PW100 engines covered by AD/PW100/5 to include additional PW100 series models (PW118, PW120, PW120A, PW121) that do not already incorporate the SB (Background; Applicability). Compliance timing is specified (next shop visit or 31 Dec 2003)."},"complexity_factors":["Narrow technical scope limited to specific engine models (PW118, PW120, PW120A, PW121) and exclusion for engines already incorporating P&WC SB 20914 (Applicability).","Mandates compliance by reference to an external technical document (P&WC SB 20914 Revision 4), requiring technical shop work and parts (Requirement).","Time-bound compliance with a dual trigger: next scheduled engine shop visit or an absolute date (31 December 2003) (Compliance).","Cross-references to other regulatory instruments and ADs (Transport Canada AD CF-2002-10; AD/PW100/5 and AD/PW100/6 in Background), increasing traceability needs.","Issued under delegated regulatory power (CASA delegate under CAR 1998 subreg 39.1(1)), leaving limited administrative discretion in enforcement.","Operational impact concentrated on aircraft operators and maintenance organisations who pay for and schedule the modification (Requirement and Compliance)."],"plain_english_summary":"This Airworthiness Directive requires certain Pratt & Whitney Canada PW118, PW120, PW120A and PW121 engines that do not already have Service Bulletin (SB) 20914 fitted to be modified per P&WC SB 20914 Revision 4 to contain an inter‑compressor case fire. Operators must complete the work at the next scheduled engine shop visit or by 31 December 2003. The directive was issued by a CASA delegate under CAR 1998 subreg 39.1(1); operators bear the cost and responsibility for compliance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD explicitly states it 'extends the applicability' of a previous directive (AD/PW100/5) to additional engine models. This is a deliberate, bounded expansion of scope rather than scope creep. The original purpose — mandating fire containment modifications — remains unchanged."},"complexity_factors":["Single, clearly defined applicability section listing specific engine models by designation","Single mandatory action referencing an external technical document (P&WC SB 20914 Rev 4)","Simple compliance deadline: 'next shop visit OR fixed date, whichever first' — no conditional logic or phased implementation","No defined terms section, no cross-references to other legislation beyond noting related Canadian and Australian ADs for context","Background provided in plain narrative form rather than dense legislative history","Total length: approximately 250 words of substantive text"],"plain_english_summary":"This AD requires operators of Pratt & Whitney Canada PW118, PW120, PW120A and PW121 engines that have not already received SB 20914 to install the SB 20914 fire‑containment modification at the next overhaul or by 31 December 2003, whichever comes first.\n\nThe modification helps contain fires in the inter‑compressor case so a fire cannot breach the engine casing, reducing in‑flight fire risk."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pw100-10-inter-compressor-case-fire-containment","history":"/api/acts/ad-pw100-10-inter-compressor-case-fire-containment/history","analysis":"/api/acts/ad-pw100-10-inter-compressor-case-fire-containment/analysis","conflicts":"/api/acts/ad-pw100-10-inter-compressor-case-fire-containment/conflicts","importantCases":"/api/acts/ad-pw100-10-inter-compressor-case-fire-containment/important-cases","documents":"/api/acts/ad-pw100-10-inter-compressor-case-fire-containment/documents"}}