Spencer Municipal Airport traffic pattern

Pattern altitude at Spencer Municipal Airport (SPW · KSPW) is 2,300 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and every runway end is standard left traffic.

All of Spencer Municipal Airport — runways, frequencies, charts and live weather

Pattern diagram

Drawn to scale from the FAA NASR runway alignments and the per end right traffic flags — pick a runway to see its pattern. Live wind picks the favored runway when KSPW reports it.

RWY 12LEFT traffic

Heading: 121° mag · 126° true
Dimensions: 6,001 × 100 ft
TPA: 2,300 ft MSL (≈1,000 AGL) · standard
Surface: Concrete
Lights: VASI (3°) + MALSR
ILS: ILS · CAT I · LOC 110.9 (SPW) · GS 3.00°
CTAF: 123.0

Enter the left downwind (heading 301°) on the 45° at 2,300 ft MSL (≈1,000 AGL).

More details — RWY 12

Threshold elev: 1,339 ft
Markings: precision
Threshold crossing height: 45 ft
TDZ elevation: 1,339 ft

Condition: Fair. Edge lights: Med. Weight bearing: Single wheel 30k, Double wheel 50k. PCN 24.

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
12	Left traffic	121° mag	2,300 ft MSL (≈1,000 AGL)
30	Left traffic	301° mag	2,300 ft MSL (≈1,000 AGL)
18	Left traffic	181° mag	2,300 ft MSL (≈1,000 AGL)
36	Left traffic	001° mag	2,300 ft MSL (≈1,000 AGL)

No pattern altitude is published for KSPW; the figure above is the AC 90-66B 1,000 ft AGL convention for propeller aircraft, rounded to the field. Turbine aircraft normally fly 1,500 ft AGL. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at KSPW

Spencer Municipal Airport is non towered, so the pattern is self announced on CTAF 123.0. AC 90-66B asks for a report on entry and on each leg, and for the standard 45° entry to downwind at pattern altitude.

All ends are left traffic, which is the FAR 91.126 default — turns to the left unless the field charts otherwise. The full entry procedure is here →

Frequently asked

What is the traffic pattern altitude at KSPW?

Spencer Municipal Airport has no traffic pattern altitude published in the FAA NASR data. The AC 90-66B convention for propeller aircraft is 1,000 ft AGL, which works out to roughly 2,300 ft MSL (≈1,000 AGL) here — but confirm it against the Chart Supplement before you fly, since a field can have a non standard pattern altitude that NASR does not carry.

Does KSPW have right traffic?

No. All 4 runway ends at Spencer Municipal Airport use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at KSPW?

Spencer Municipal Airport is non towered, so pattern position reports go on the CTAF, 123.0. AC 90-66B asks for self announcing on entry and on each leg.

More about KSPW

Pattern direction and alignment are drawn from the FAA NASR (28-day cycle); the diagram is generated, not an FAA chart. Pattern altitude is shown as published where NASR carries one, otherwise as the AC 90-66B 1,000 ft AGL convention. For planning and education only; always verify against the Chart Supplement.