Gregory M Simmons Memorial traffic pattern

Pattern altitude at Gregory M Simmons Memorial (GZN · KGZN) is 2,700 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 18 is charted right traffic. · Open on the map

All of Gregory M Simmons Memorial — 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 KGZN reports it.

RWY 18RIGHT trafficRP · charted

Heading: 177° mag · 181° true
Dimensions: 6,536 × 100 ft
TPA: 2,700 ft MSL (≈1,000 AGL) · standard
Surface: Concrete
Lights: 4-light PAPI (left) (3°)
Displaced thr: 472 ft
CTAF: 122.9

Enter the right downwind (heading 357°) on the 45° at 2,700 ft MSL (≈1,000 AGL).

More details — RWY 18

Threshold elev: 1,707 ft
Markings: precision
Approach obstacle: Road, 17 ft, 200 ft from threshold, 0 ft B of centerline
Threshold crossing height: 45 ft
TDZ elevation: 1,711 ft
Declared TORA/TODA/ASDA/LDA: 6,536 / 6,536 / 6,064 / 6,064 ft

Condition: Good. Edge lights: Med. Weight bearing: Single wheel 150k.

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
18	Right traffic	177° mag	2,700 ft MSL (≈1,000 AGL)
36	Left traffic	357° mag	2,700 ft MSL (≈1,000 AGL)

No pattern altitude is published for KGZN; 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 KGZN

Gregory M Simmons Memorial is non towered, so the pattern is self announced on CTAF 122.9. AC 90-66B asks for a report on entry and on each leg, and for the standard 45° entry to downwind at pattern altitude.

Watch the right traffic ends here: 18. 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 KGZN?

Gregory M Simmons Memorial 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 2,700 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 KGZN have right traffic?

Yes, on one runway end: 18. Every other end at Gregory M Simmons Memorial is standard left traffic.

What frequency is the pattern on at KGZN?

Gregory M Simmons Memorial is non towered, so pattern position reports go on the CTAF, 122.9. AC 90-66B asks for self announcing on entry and on each leg.

More about KGZN

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.

Something here wrong or out of date? Report a data problem.