“Odd” or “Even” thousand-foot altitudes or flight levels; e.g., 5,000, 6,000, 7,000, FL 250, FL 260, FL 270.
Source FAA Pilot/Controller Glossary · checked 2026-08-25
CARDINAL ALTITUDES
« Back to Glossary Index
« Back to Glossary Index
“Odd” or “Even” thousand-foot altitudes or flight levels; e.g., 5,000, 6,000, 7,000, FL 250, FL 260, FL 270.
Source FAA Pilot/Controller Glossary · checked 2026-08-25