Case Studies

Case Study 1

STC Fuel System Mod

This task involved an STC modification for the introduction of an external auxiliary fuel tank on a

turboprop regional aircraft. IBM Rational DOORS™ was being used for requirement management

when WEC became involved but its functionality was not being fully utilised. WEC:

• Identified multiple requirements management issues and developed the use of DOORS

as a requirements management tool

• developed system level requirements based on customer and certification requirements

• compiled component level requirements and produced component Statements of Work

• validated the various levels of DOORS modules for the task

• used DOORS to verify the supplier responses to aid in the component down-selection

• identified and managed changes to the customer requirements

• established a requirements change process to manage change in a controlled and

traceable manner

RequirementsManagement

Andy Walsh, Senior Engineer

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Woodford Engineering Consultancy (UK) Ltd.

HEAD OffICE Metropolitan House | Station Road | Cheadle Hulme | Cheshire | SK8 7AZ | United Kingdom

BRISTOl OffICE Unit 6 Brabazon Park | Golf Course lane | filton | Bristol | BS34 7PZ | United Kingdom

www.wecuk.com

Case Study 2

As part of the introduction of a new engine on a single aisle passenger jet aircraft, WEC were

asked to manage the validation and verification of all requirements covering the fuel system. WEC:

• identified key stakeholders

• gathered requirements from all applicable sources

• compiled the requirements Validation and Verification Matrix, including providing the

necessary traceability

• liaised with the customer Chief Engineer and all relevant specialists and stakeholders

across various disciplines and functions

• ensured that any requirement changes were documented including the addition of certification

requirements and ensured that any changes were identified to the stakeholders

• continuously updated the matrix to validate and then to verify the requirements

• liaised with multiple disciplines including with other ATA chapters

The V&V matrix proved to be a valuable tool for the customer in providing traceability of

requirements and provided a benchmark for the customer’s subsequent projects.

Duncan Woods, Senior Engineer

New Engines for aPassenger Aircraft

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