Glossary

  • DU – Display Unit
  • FMS – Flight Management System
  • HAPP – Honeywell Avionics Protection Plan
  • IRU – Inertial Reference Unit
  • ISDU – Inertial Systems Display Unit
  • LASEREF IV – A Ring Laser Gyro based on the 4 MCU inertial reference unit technologies used in high volume applications such as the Boeing 737, Airbus A319/320/321/330/340. LASEREF IV is a follow on to the LASEREF II and III.

 

  • MTBF – Mean Time Before Failure
  • MTBUR – Mean Time Before Unscheduled Removal
  • RLG – Ring Laser Gyro
  • SB – Service Bulletin
  • SIL – Service Instructions Letter
  • VAI – VSE Aviation, Inc.