KRDK Red Oak Muni

UNKNOWN

Unknown — not enough evidence to call a runway

We don't know, and saying so beats guessing. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available. Wind calm — no directional preference.

certainty: — evidence: NONE no tower now

Wind calm · VFR · 71 min old · from KAIO (25.6 nm away)

▶ Listen live — ATIS/CTAF on LiveATC opens LiveATC’s own player · verify the broadcast yourself

23 27% 5100 ft · calm-wind rwy

5 16% 5100 ft

17 15% 2901 ft

35 15% 2901 ft

13 14% 2050 ft

31 14% 2050 ft

Why — evidence behind this answer

Runway 23

PRIOR 23 is the designated calm-wind runway +0.50
PRIOR runway length 5100 ft +0.10

Runway 5

PRIOR runway length 5100 ft +0.10

Runway 13

PRIOR runway length 2050 ft -0.08

Runway 31

PRIOR runway length 2050 ft -0.08

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	71 min	Nearest station KAIO (25.6 nm away)
ADSB	UNAVAILABLE		No ADS-B track history here yet
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (No ADS-B track history here yet)

Was this right?

KRDK field & runways

Red Oak Muni, Red Oak, Iowa. Field elevation 1045 ft. Non-towered (NON-ATCT). Magnetic variation 4.0°E on record, 1.5°E 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 0.062°/year west — about 1° every 16 years — which is why runway numbers eventually stop matching their pavement.

Runway data from the FAA NASR 01 Oct 2026 cycle. Where NASR locates both thresholds, the true heading is the bearing between them rather than NASR's whole-degree alignment. Magnetic is that heading against *today's* declination from WMM2025, not the field's variation of record — so it can differ from the chart by the gap between the two shown above. The number painted on the runway is the one ATC uses.
Runway	True	Magnetic	Number	Length	Surface	Pattern	Notes
13	141.7°	140.2°	runway 14 by the rule today · 10.2° past	2,050 ft	TURF	left
17	174.4°	172.9°	matches rule gives runway 18 in ~33 yr	2,901 ft	CONC	left
23	237.8°	236.3°	runway 24 by the rule today · 6.3° past	5,100 ft	CONC		calm-wind RWY 23 CALM WIND RWY.
31	321.6°	320.2°	runway 32 by the rule today · 10.2° past	2,050 ft	TURF	left
35	354.4°	352.9°	matches rule gives runway 36 in ~33 yr	2,901 ft	CONC	left
5	57.8°	56.3°	runway 6 by the rule today · 6.3° past	5,100 ft	CONC

Generated 09:46:22Z · auto-refreshes · JSON

KRDK ☆ Red Oak Muni