CTE - ANSWER-Cross track Error
PBN - ANSWER-Perfomance Base Navegatiom
FTE - ANSWER-Flight technical error
NSE - ANSWER-Navegation sys erer
PDE - ANSWER-Path definition error
TSE - ANSWER-Total sys error
HAL - ANSWER-Horizontal alerting limit
HPL - ANSWER-Horizontal protection limit
RAIM - ANSWER-Receiver Autonomus integrity monitoring
RF - ANSWER-Radio to FIX
FRT - ANSWER-Fix to radio transition
HA - ANSWER-Holding to an altitud
HF - ANSWER-Holding to a FIX