{"id":"F2009L03437","name":"AD/F100/95 - Fuel Fire Shut-off Valve Actuator","slug":"ad-f100-95-fuel-fire-shut-off-valve-actuator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":141053,"registerId":"commonwealth-F2009L03437-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Fokker F100 (F28 Mk 100) Series Aeroplan","sectionType":"division","heading":"Fokker F100 (F28 Mk 100) Series Aeroplanes","content":"### Fokker F100 (F28 Mk 100) Series Aeroplanes\n\n| AD/F100/95 | Fuel Fire Shut-off Valve Actuator | 10/2009 |\n| ---------- | --------------------------------- | ------- |\n\n| Applicability: | Fokker Aircraft B.V. F28 Mark 0070 and Mark 0100 aeroplanes, all serial numbers, if an actuator Part Number (P/N) 9409122 or P/N 53-0013 is installed on one or both fuel fire shut-off valves. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Accomplish either Requirement 1.a. or 1.b. below, as applicable to the aeroplane configuration:a. For aeroplanes in pre-SBF100-76-018 dated 31 July 2008 configuration:Remove each fuel fire shut-off valve actuator with P/N 9409122 from the aeroplane and replace it with a fuel fire shut-off valve actuator P/N 53-0027 and accomplish the associated modifications in accordance with Part 1A or 1B, as applicable, of the Accomplishment Instructions of Fokker Services SBF100-76-020 dated 20 April 2009.b. For aeroplanes in post-SBF100-76-018 configuration:Remove each fuel fire shut-off valve actuator with P/N 53-0013 from the aeroplane and replace it with a fuel fire shut-off valve actuator P/N 53-0027 in accordance with Part 2 of the Accomplishment Instructions of Fokker Services SBF100-76-020.2. Do not install a P/N 53-0013 fuel fire shut-off valve actuator on any aeroplane.The use of later approved revisions of these documents is acceptable for compliance with the requirements of this AD.Note 1: After installation of P/N 53-0027 fuel fire shut-off valve actuators on an aeroplane, the requirements of AD/F100/84 (EASA AD 2007-0122) no longer apply to the fuel fire shut-off valve actuators installed on that aeroplane.Note 2: EASA AD 2009-0168 dated 3 August 2009 refers. This AD supersedes EASA AD 2008-0193. |\n| Compliance: | For Requirement 1 - Within the next 15 months after the effective date of this AD.For Requirement 2 - After the effective date of this AD. |\n\n| | This Airworthiness Directive becomes effective on 24 September 2009. |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Background: | Due to their position on the aeroplane, fuel fire shut-off valve actuators P/N 9409122 are susceptible to freezing, which has an adverse effect on the operation of the valve. Also, due to various causes, the failure rate of actuator P/N 9409122 is higher than expected. Failure or freezing of the actuator may prevent the flight crew to close the fuel fire shut-off valve in case of an engine fire.Aeroplanes serial numbers 11244 through 11441 were delivered from the production line with actuators P/N 9401037 (“chimney type”) installed. However, on some aeroplanes, these actuators have subsequently been replaced in service with actuators P/N 9409122 (using mounting blocks P/N 7923505) on one or both fuel fire shut-off valves. As a result, those aeroplanes are also affected by this unsafe condition.To address and correct this unsafe condition, CASA issued AD/F100/92 (EASA AD 2008-0193), requiring the replacement of all P/N 9409122 fuel fire shut-off valve actuators with new actuators developed by the manufacturer Eaton Aerospace, P/N 53-0013, which have improved reliability and are less susceptible to freezing.Following the introduction of actuator P/N 53-0013 in service, Eaton Aerospace reported manufacturing and design errors on actuators with P/N 53-0013. As a result of these errors, the top-cap of the actuator may become loose, possibly leading to actuator failure. Eaton Aerospace has eliminated these problems by introducing a new actuator P/N 53-0027 and Fokker Services have published SBF100-76-020 to introduce these improved actuators on aeroplanes.As a consequence of AD/F100/92, both P/N 9409122 and P/N 53-0013 fuel fire shut-off valve actuators are currently installed on aeroplanes affected by this AD.For the reasons described above, this AD supersedes AD/F100/92 and requires the installation of new P/N 53-0027 actuators. This AD also prohibits the installation of P/N 53-0013 actuators in accordance with SBF100-76-018 (which has been cancelled), as previously required by AD/F100/92. |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n14 August 2009","sortOrder":0},{"sectionNumber":"AD/F100/95","sectionType":"part","heading":"AD/F100/95","content":"## AD/F100/95","sortOrder":1},{"sectionNumber":"Fuel Fire Shut-off Valve Actuator","sectionType":"part","heading":"Fuel Fire Shut-off Valve Actuator","content":"## Fuel Fire Shut-off Valve Actuator","sortOrder":2},{"sectionNumber":"10/2009","sectionType":"part","heading":"10/2009","content":"## 10/2009","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":true,"description":"This AD changes the earlier scope in AD/F100/92 by requiring installation of actuator P/N 53-0027 and prohibiting P/N 53-0013; it therefore supersedes the prior AD and cancels the SBF100-76-018 installation path. Applicability remains to Fokker F28 Mk 0070/0100 aeroplanes with the listed actuator part numbers, and installation of P/N 53-0027 removes the need to comply with AD/F100/84 for those actuators (Background; Notes)."},"complexity_factors":["Multiple part-numbers to track and distinguish: P/N 9409122, 9401037, 53-0013, 53-0027 (Applicability; Background).","Configuration-dependent requirements (different replacement instructions for pre- and post-SBF100-76-018 aircraft) (Requirement 1.a / 1.b).","References to external service documents and prior ADs: Fokker Services SBF100-76-020 and SBF100-76-018, AD/F100/92, AD/F100/84, EASA AD 2009-0168 (Requirement; Notes; Background).","Supersession and prohibition mechanics: this AD supersedes AD/F100/92 and prohibits installation of P/N 53-0013 (Background; Note 2).","Compliance timing and effective date constraints: replacement due within 15 months; AD effective 24 September 2009 (Compliance; Effective date).","Serial-number nuance: some aeroplanes were delivered with different original actuators but may have had in-service changes (serials 11244–11441) (Background).","Permission for later approved revisions of referenced documents for compliance creates delegation to approvers (Requirement: later approved revisions acceptable).","Operational and cost impacts on operators: removal/installation of actuators, parts procurement and labour per Service Bulletin procedures (Requirement; Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of Fokker F100 (F28 Mk 0070/0100) aeroplanes that have fuel fire shut-off valve actuators P/N 9409122 or P/N 53‑0013 to replace them with actuator P/N 53‑0027 within 15 months and forbids future installation of P/N 53‑0013.\n\nCASA describes the change as addressing actuator freezing and elevated failure rates that can prevent crews closing the fuel shut-off valve in an engine fire; operators bear the cost and must follow Fokker Services SBF100‑76‑020 instructions."},"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":4,"scope_assessment":{"changed":false,"description":"This AD maintains its original scope as a targeted safety directive addressing specific defective components on a specific aircraft type. While it supersedes a previous AD (AD/F100/92) due to the replacement part itself proving defective, this represents iterative safety correction rather than scope creep. The directive remains tightly focused on fuel fire shut-off valve actuators on Fokker F100 series aircraft."},"complexity_factors":["Multiple part numbers referenced (9409122, 53-0013, 53-0027, 9401037, 7923505) requiring careful tracking of which aircraft configurations are affected","Two distinct compliance paths based on aircraft modification history (pre-SBF100-76-018 vs post-SBF100-76-018 configuration)","Cross-references to three other airworthiness directives (AD/F100/84, AD/F100/92, and EASA AD 2008-0193/2009-0168) and manufacturer service bulletins (SBF100-76-018, SBF100-76-020)","Nested applicability conditions: applies to specific aircraft models, specific serial number ranges, but only if specific parts are installed, with exceptions for aircraft already modified","Conditional note that compliance with this AD removes obligations under a previous AD (AD/F100/84) for the affected components"],"plain_english_summary":"This AD mandates that operators of Fokker F100 (F28 Mk 0070/0100) replace faulty fuel fire shut‑off valve actuators with the new third‑generation part 53‑0027 and immediately prohibit fitting the defective replacement 53‑0013. The original actuators (9409122) could freeze; the interim 53‑0013 has manufacturing defects that can cause failure.\n\nCompliance (including replacement) is required within 15 months to restore reliable engine fuel shut‑off and address a critical fire‑safety risk."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f100-95-fuel-fire-shut-off-valve-actuator","history":"/api/acts/ad-f100-95-fuel-fire-shut-off-valve-actuator/history","analysis":"/api/acts/ad-f100-95-fuel-fire-shut-off-valve-actuator/analysis","conflicts":"/api/acts/ad-f100-95-fuel-fire-shut-off-valve-actuator/conflicts","importantCases":"/api/acts/ad-f100-95-fuel-fire-shut-off-valve-actuator/important-cases","documents":"/api/acts/ad-f100-95-fuel-fire-shut-off-valve-actuator/documents"}}