Washington Manassas Harry P. Davis Field traffic pattern
Pattern altitude at Washington Manassas Harry P. Davis Field (HEF · KHEF · MNZ) is 1,200 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 34R, 16R are charted right traffic.
All of Washington Manassas Harry P. Davis 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 KHEF reports it.
RWY 16LLEFT traffic
- Heading
- 161° mag · 151° true
- Dimensions
- 6,200 × 100 ft
- TPA
- 1,200 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- Lights
- 4-light PAPI (left) (3°) + MALSR
- ILS
- LOC/GS · CAT I · LOC 109.1 (HEF) · GS 3.00°
- CTAF
- 133.1
More details — RWY 16L
- Threshold elev
- 192 ft
- Markings
- precision
- Approach obstacle
- Trees, 55 ft, 1,822 ft from threshold, 358 ft R of centerline — 29:1 slope to clear
- Threshold crossing height
- 55 ft
- TDZ elevation
- 192 ft
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 |
|---|---|---|---|
| 16L | Left traffic | 161° mag | 1,200 ft MSL (≈1,000 AGL) |
| 34R | Right traffic | 341° mag | 1,200 ft MSL (≈1,000 AGL) |
| 16R | Right traffic | 161° mag | 1,200 ft MSL (≈1,000 AGL) |
| 34L | Left traffic | 341° mag | 1,200 ft MSL (≈1,000 AGL) |
No pattern altitude is published for KHEF; 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 KHEF
Washington Manassas Harry P. Davis Field is towered, working 133.1. 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: 34R, 16R. 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 KHEF?
Washington Manassas Harry P. Davis 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 1,200 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 KHEF have right traffic?
Yes, on 2 runway ends: 34R, 16R. Every other end at Washington Manassas Harry P. Davis Field is standard left traffic.
Do I fly a standard pattern at KHEF?
Washington Manassas Harry P. Davis Field is towered (133.1), 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 KHEF
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.