The meaning of the Acronym EFR is...

EFR is

• Electronic Flight Rules
• Electronic Fuel Regulator

More Meanings For EFR:

• Enhanced Failure Rate
• Essential Fault Reduction
• Enhanced Full Rate
• External Finance Relations
• Eit Fits Realtime
• Emergency Feature Request
• Environmental Facilities Review
• Electronic Flight Rules
• Electronic Fuel Regulator
• αναπαραγωγικός αντιδραστήρας
• Extended Focus Range

EFR is also in:

• Electronics
• Environmental
• General
• Greek
• Mathematics
• Photography
• Transportation