Naval Station Mayport / Admiral David L McDonald Field (KNRB)

Naval Station Mayport / Admiral David L McDonald Field at a glance

Naval Station Mayport / Admiral David L McDonald Field is a medium airport in Jacksonville, Florida, United States, known to airline systems as NRB. The field elevation of 15 ft (5 m) is the number every arriving pilot dials against QNH — circuit heights and initial approach altitudes at KNRB are all figured from it. There is no scheduled airline service listed here — typical traffic is general aviation, training and local operations.

The single runway, 05/23, offers 8,001 ft (2439 m) of asp surface, with runway lighting for night operations. Runway numbers give magnetic orientation: runway 05 points roughly 50° magnetic.

For the weather side of planning, the live METAR and TAF page for KNRB shows the current observation decoded line by line — wind on an instrument dial, visibility, cloud layers and the resulting flight rules — refreshed continuously from official sources.

Flight-planning notes for Naval Station Mayport / Admiral David L McDonald Field

Density altitude is the quiet performance-killer at any field: on a hot day the 15 ft field elevation of Naval Station Mayport / Admiral David L McDonald Field can translate into a substantially higher density altitude, stretching take-off rolls and flattening climb rates — run the numbers rather than trusting the feel of a standard day. Expect published instrument procedures, controlled airspace and clearance requirements; slots and handling may apply to general aviation traffic.

This entry is one of 917 airports and airfields we list for United States — the country index on the airports hub links the rest. Coordinates above are given in both DMS and decimal degrees so they can go straight into a GPS, a flight planner or a chart plot without conversion.

Where this data comes from

The reference layer behind this page builds on the OurAirports dataset — a public-domain, community-maintained register of the world's airports that many flight planners and apps rely on — with equity records preserved from documented historical listings where the dataset is silent. Figures are carried as published: elevations as surveyed, coordinates as filed, runway dimensions as recorded. Nothing is estimated to fill a gap, and the whole layer regenerates from source on every site build, so corrections upstream arrive here automatically.