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What is MOCA and Obstacle Clearance in Aviation about?
- Obstacle clearance altitude (OCH) is the minimum altitude for approaches that ensures clearance from obstacles. Minimum sector altitudes (MSA) provide 1000 ft clearance within 25 NM of navigation aids. Minimum off-route altitudes (MORA) ensure clearance enroute and around navigation fixes. - Aircraft must not fly below 1000 ft above obstacles within 5 NM, or 2000 ft above mountainous terrain. Obstacles over 492 ft are lit, under require lighting only if significant. - Minimum enroute altitude (MEA) ensur
- Author
- peter stano
- Language
- EN