Portsmouth International Airport at Pease traffic pattern

Pattern altitude at Portsmouth International Airport at Pease (PSM · KPSM) is 1,100 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 16 is charted right traffic.

All of Portsmouth International Airport at Pease — 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 KPSM reports it.

RWY 16RIGHT trafficRP · charted

Heading: 165° mag · 149° true
Dimensions: 11,321 × 150 ft
TPA: 1,100 ft MSL (≈1,000 AGL) · standard
Surface: ASPH-CONC
Lights: 4-light PAPI (left) (3°) + MALSR
ILS: ILS · CAT I · LOC 110.1 (PGQ) · GS 3.00°
Displaced thr: 803 ft
CTAF: 122.95

More details — RWY 16

Threshold elev: 94 ft
Markings: precision
Approach obstacle: Trees, 58 ft, 2,200 ft from threshold, 0 ft B of centerline — 34:1 slope to clear
Threshold crossing height: 72 ft
TDZ elevation: 100 ft
Declared TORA/TODA/ASDA/LDA: 11,321 / 11,321 / 11,321 / 10,518 ft

Condition: Good. Edge lights: High. Surface: Grooved. Weight bearing: Single wheel 120k, Double wheel 250k, Dual tandem 550k, Double dual tandem 1120k.

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

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
16	Right traffic	165° mag	1,100 ft MSL (≈1,000 AGL)
34	Left traffic	345° mag	1,100 ft MSL (≈1,000 AGL)

No pattern altitude is published for KPSM; 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 KPSM

Portsmouth International Airport at Pease is towered, working 128.4. Contact the tower before entering the surface area and fly the pattern you are assigned — the directions below are the charted default when no instruction is given.

Watch the right traffic ends here: 16. A right pattern at a field where the other end is left is the single most common place to end up pointing at opposing traffic. The full entry procedure is here →

Frequently asked

What is the traffic pattern altitude at KPSM?

Portsmouth International Airport at Pease 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 1,100 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 KPSM have right traffic?

Yes, on one runway end: 16. Every other end at Portsmouth International Airport at Pease is standard left traffic.

Do I fly a standard pattern at KPSM?

Portsmouth International Airport at Pease is towered (128.4), so the pattern shown here is the charted default — but the controller's instruction overrides it. Expect straight in approaches, base entries and midfield crossings as traffic dictates.

More about KPSM

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.