![]() If the reception is line-of-sight based, signal coverage only extends to the MRA or above.The minimum reception altitude (MRA) identifies the lowest altitude at which an intersection can be determined from an off-course NAVAID.The MOCA is listed below the MEA and indicated on AeroNav Products charts by a leading asterisk (e.g., "*3400" - see Figure 1-2, V287 at bottom left).The minimum obstruction clearance altitude (MOCA), as the name suggests, provides the same obstruction clearance as an MEA however, the NAV signal reception is ensured only within 22 NM of the closest NAVAID defining the route.Arrows are used to indicate the direction to which the MEA applies.MEAs are usually bidirectional however, they can be single-directional.MEAs can be authorized with breaks in the signal coverage if this is the case, the AeroNav Products en route chart notes "MEA GAP" parallel to the affected airway.The obstacle clearance, within the limits of the airway, is typically 1,000' in non-mountainous areas and 2,000' in designated mountainous areas.Communication is not necessarily guaranteed with MEA compliance.The minimum en route altitude (MEA) ensures a navigation signal strong enough for adequate reception by the aircraft navigation (NAV) receiver and obstacle clearance along the airway. ![]() When the AeroNav Products en route chart is unfolded, the legend is displayed and provides information concerning airports, NAVAIDs, communications, air traffic services, and airspace. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |