Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what assurances he has received from Lockhead Martin on the (a) quality of the canopy adhesive used on the F35 and (b) effect on its stealth capability of that adhesive.

Investigations into F-35 production, maintenance and repair procedures have resulted in a change of adhesive to address incidents of canopy transparency delamination. Any impact on aircraft capability caused by the delamination is restored by repair or replacement of the canopy transparency.