Written question asked by Desmond Swayne (Conservative) on Wednesday, 30 June 1999, in the House of Commons. It was due for an answer on Tuesday, 13 July 1999. It was answered by Doug Henderson (Labour) on Tuesday, 13 July 1999 on behalf of the Ministry of Defence.

Ministry of Defence

Question: To ask the Secretary of State for Defence, pursuant to his Answer of 22nd June, Official Report, colums 158-9, on FADEC software, when, between 1989 and June 1994, the FADEC software was re-designed on the Chinook MK2; what was the nature of the re-design work undertaken; and which contractor was responsible for carrying out the work. - Inc table.

Answer: Mr. Swayne: To ask the Secretary of State for Defence, pursuant to his answer of 22 June 1999, Official Report, columns 326-27, on FADEC software, when, between 1989 and June 1994, the FADEC software was redesigned on the Chinook MK2; what was the nature of the redesign work undertaken; and which contractor was responsible for carrying out the work. [89860] Mr. Doug Henderson: Between 1989 and June 1994, there were 58 design changes incorporated in the FADEC software. The changes (categorised in the table) were all undertaken by the prime contractor Textron Lycoming. _________________________________________________________________________________________________. Software Changes Improved maintainability of software 7 Improved fault logic 10 Customer request 11 Fault logic corrections 9 Improved accuracy 6 Modification due to Hardware changes 5 Improved Comms link and Qualification test changes 4 Corrections and Improvements in reliability 6 _________________________________________________________________________________________________.

Secondary information