Despite ample warning about its dangers, the Royal Air Force took delivery of Kapton-wired Harrier GR5s. Two crashed because of the wire before the RAF embarked on a program to modify the use of Kapton in all the vulnerable parts of their planes.
The mod's called KT in generic terms, all harriers still have a % of Kapton left installed no mind whatever MOD/BAe say, back end of a modern Harrier is not a pretty sight.
MoJo