The Countess of Mar asked Her Majesty's Government: Further to the Written Answer by the Lord Davies of Oldham on 19th October (WA 126), how many air quality monitoring exercises were carried out during contaminated air events in commercial jet aircraft; and on what occasions. [HL2312]

Lord Davies of Oldham: There is no requirement for air quality monitoring exercises to be carried out during contaminated air events in aircraft, and there is no record of any such measurements in the public domain.  Air quality measurements are normally only made as part of the initial certification of each aircraft type. 

1 December 2005