Related Clues:

• Nos. reported to a control tower
• Flight stats.
• Cockpit stats
• Heights: Abbr.
• PC keys
• Relief map figs.
• Mtn. figures
• Cockpit stats: Abbr.
• In-flight announcement nos.
• Cockpit readings: Abbr.
• Heights (Abbr.)
• Mtn. statistics
• Hgts
• Certain keyboard keys
• Climbing figs