PILOT ARCADE ALL MISSIONS

IFR PROCEDURES / MISSION 07

IFR Altitude Lab

Read the altitude architecture behind an airway

AIRWAY CROSS-SECTION

See where each altitude lives

NOT TO SCALE 14,000 FT 3,000 FT
MEA 9,000
GNSS MEA 8,000G
*MOCA 7,000
OFF ROUTE 86 OROCA
9,000 MCA →DRAKE FIX
VOR A
VOR B

FREE IFR ALTITUDE PRACTICE

Understand IFR chart altitude terminology

Explore where MEA, GNSS MEA, MOCA, MRA, MCA, MAA, and OROCA apply on a simplified low-enroute chart profile. Challenge mode helps instrument students match each acronym with its purpose and geographic extent.

Route altitudes

Compare obstacle clearance and navigation-signal expectations along airway segments, including MOCA’s limited navigation coverage.

Fix requirements

See why an MRA may be needed to identify a fix and why an MCA can require a higher altitude before crossing one.

Chart context

OROCA provides broad-area obstacle clearance but not the operational assurances of a published airway altitude.