Williams Field traffic pattern
Pattern altitude at Williams Field (TX99) is 5,100 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and every runway end is standard left traffic. · Open on the map
All of Williams Field — runways, frequencies, charts and live weatherPattern 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 TX99 reports it.
RWY 13LEFT traffic
- Heading
- 130° mag · 140° true
- Dimensions
- 2,200 × 125 ft
- TPA
- 5,100 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
Enter the left downwind (heading 310°) on the 45° at 5,100 ft MSL (≈1,000 AGL).
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
Pattern direction by runway
| Runway | Pattern | Heading | Pattern altitude |
|---|---|---|---|
| 04 | Left traffic | 040° mag | 5,100 ft MSL (≈1,000 AGL) |
| 22 | Left traffic | 220° mag | 5,100 ft MSL (≈1,000 AGL) |
| 08L | Left traffic | 080° mag | 5,100 ft MSL (≈1,000 AGL) |
| 26R | Left traffic | 260° mag | 5,100 ft MSL (≈1,000 AGL) |
| 01 | Left traffic | 010° mag | 5,100 ft MSL (≈1,000 AGL) |
| 19 | Left traffic | 190° mag | 5,100 ft MSL (≈1,000 AGL) |
| 08R | Left traffic | 080° mag | 5,100 ft MSL (≈1,000 AGL) |
| 26L | Left traffic | 260° mag | 5,100 ft MSL (≈1,000 AGL) |
| 13 | Left traffic | 130° mag | 5,100 ft MSL (≈1,000 AGL) |
| 31 | Left traffic | 310° mag | 5,100 ft MSL (≈1,000 AGL) |
No pattern altitude is published for TX99; 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 TX99
Williams Field is non towered. 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 TX99?
Williams Field 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 5,100 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 TX99 have right traffic?
No. All 10 runway ends at Williams Field use standard left traffic, so no right pattern is charted here.
More about TX99
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.