KNRB Mayport Ns (Adm David L Mcdonald Fld)
Runway 5 — favored by the wind (10 kt at 40° true)
Based on wind only — no traffic or ATIS to confirm. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. ADS-B tracking just started here — traffic history is still building.
certainty: 90% evidence: WEAK Class D
Wind 040° true at 10 kt G23 · VFR · 26 min old · from KCRG (5.6 nm away)
▶ Listen live — ATIS/CTAF on LiveATC opens LiveATC’s own player · verify the broadcast yourself
Why — evidence behind this answer
Runway 5
- WIND 10 kt headwind, 0 kt left crosswind 26 min ago +3.34
Runway 23
- WIND 10 kt TAILWIND, 0 kt right crosswind 26 min ago -41.86
Sources consulted
| source | status | age | note |
|---|---|---|---|
| D_ATIS | UNAVAILABLE | No D-ATIS at this field | |
| METAR | OK | 26 min | Nearest station KCRG (5.6 nm away) |
| ADSB | WARMING_UP | 2 min | Only 2 min of track history so far |
| NOTAM | OK | ||
| CIFP | NOT_CONFIGURED | Instrument procedures: phase 4 |
Recent operations
No operations observed in the last hour. (Only 2 min of track history so far)
Was this right?
KNRB field & runways
Mayport Ns (Adm David L Mcdonald Fld), Mayport, Florida. Field elevation 15 ft. Class D airspace. Towered. Private use. Magnetic variation 6.0°W on record, 7.2°W today.
The FAA's variation of record is the number this field was surveyed against; the second is where north points now, from WMM2025. It is moving 0.065°/year west — about 1° every 15 years — which is why runway numbers eventually stop matching their pavement.
| Runway | True | Magnetic | Number | Length | Surface | Pattern | Notes |
|---|---|---|---|---|---|---|---|
| 23 | 222.8° | 229.9° | matches | 8,001 ft | ASPH | right | |
| 5 | 42.8° | 49.9° | matches | 8,001 ft | ASPH |
Generated 11:19:11Z · auto-refreshes · JSON