...if the LCY compliant ER3...
If you'll forgive the ignorance of a simmer, what does an ERJ-135 have to have to be LCY-compliant (besides a certified crew)? Am I right in guessing that ERJs can be delivered with or without reverse thrust capabilities and that BMI's current aircraft don't have this 'make plane stop now' feature which may be useful at LCY? If so, can reverse thrust be fitted retrospectively? Are there other elements?