What are the RPZ dimensions for a precision approach runway?

For approaches with visibility minimums below 3/4 statute mile, the Runway Protection Zone is 2,500 ft long with a 1,000 ft inner width and 1,750 ft outer width (78.914 acres) per FAA AC 150/5300-13B Appendix G. Runways with 3/4-mile or greater minimums use a 1,700 ft by 1,000 ft by 1,510 ft RPZ (48.978 acres).

Where does the approach RPZ begin?

The approach RPZ begins 200 ft before the runway threshold. The departure RPZ instead anchors to the end of the takeoff run available (TORA), not the stopway end.

What can be built in a Runway Protection Zone?

The RPZ should be kept clear of incompatible land uses. The FAA discourages residences, fuel storage, places of public assembly, and anything that attracts wildlife or concentrates people; some uses such as agriculture or roads may be acceptable only with FAA coordination.

RPZ Dimensions

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Set from aircraft

Set from airport Optional — pre-fills runway designation and declared distances from FAA NASR.

Aircraft Approach Cat.AAC

Airplane Design GroupADG

Geo classSELECT

Runway designationEND 2 AUTO

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-- HDG ---°

Visibility minimum

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Visibility minimum

Plan view — both ends

Runway Approach RPZ Departure RPZ Not to scale · 200 ft offset from threshold

► RPZ Dimensions SOURCE · AC 150/5300-13B APP G · TBL G-1–G-12

Departure RPZ anchors to TORA, not ASDA. When declared distances apply, the departure RPZ begins 200 ft beyond the far end of Take-Off Run Available. Confirm declared-distance values on the FAA-approved ALP before siting.

Dimensions: AC 150/5300-13B Appendix G (Tables G-1–G-12). Siting: Appendix H (Declared Distances). Land use: AC 150/5190-4B § 2.2.5.

► Apply to declared distances RPZ ANCHORING · §3.13.1 · APP H

Enter a runway's declared distances to see exactly where each end's approach and departure RPZ inner edge falls. The approach RPZ begins 200 ft before the threshold — displacing the threshold shifts it inboard by the same amount. The departure RPZ begins 200 ft beyond the far end of TORA; a stopway does not move it, and a clearway affects only the departure surface (AC 150/5300-13B §3.13.1, Appendix H Table H-1). End names are optional — one set of values works on its own.

Physical runway length

Needed for the standard-vs-adjusted comparison and input checks.

End 1approach · departure

Displaced threshold

TORA

Stopway

Clearway

End 2approach · departure

Displaced threshold

TORA

Stopway

Clearway

► Complete RPZ reference 48 COMBINATIONS · FILTERABLE

AAC

ADG

Visibility

Showing 48 of 48 combinations

Current selection Approach Departure

Group	Visibility	App len (ft)	App inner (ft)	App outer (ft)	Dep len (ft)	Dep inner (ft)	Dep outer (ft)
Loading reference data…

Dimensions: AC 150/5300-13B Appendix G, Tables G-1 through G-12. · Siting: AC 150/5300-13B Appendix H (Declared Distances). · Land use: AC 150/5190-4B § 2.2.5. · Verify all dimensions against current FAA publications before use in official Airport Layout Plans or submittals.

Reference notes DESIGNATION · SITING · WHAT IS AN RPZ

What is the RPZ?READ · ~40s

The Runway Protection Zone (RPZ) is a trapezoidal surface off each runway end — it enhances protection of people and property on the ground in the event of aircraft undershoot, overshoot, or excursion.

Each runway end has its own approach RPZ and departure RPZ. Dimensions depend on AAC group and visibility minimums per AC 150/5300-13B Appendix G (Tables G-1–G-12).

RPZ components

Per AC 150/5300-13B Appendix G, the RPZ has two functional components: the central portion aligned with the extended runway centerline, and the controlled activity area flanking it. Both are subject to FAA land-use compatibility standards.

Land use

Airport sponsors are expected to control land uses within the RPZ, preferably through fee-simple acquisition. Prohibited: residences, places of public assembly, fuel storage. Permitted with conditions: farming (meeting clearance standards), airport service roads, underground utilities, NAVAIDs. Automobile parking is discouraged but may be permitted outside the central portion.

Triggers for RPZ re-evaluation

New or revised instrument approach procedure with lower minimums, or change in critical design aircraft that increases RPZ dimensions.

Runway designation rulesOPTIONAL

Runway designators are based on magnetic azimuth rounded to the nearest 10°, with leading zero for numbers below 10 (e.g. 09 / 27, 17L / 35R). The reciprocal end differs by 180° — the tool auto-computes End 2 from End 1, swapping L↔R and keeping C as C.

Labels are decorative — they do not affect RPZ dimensions. Override End 2 freely if magnetic variation or displaced thresholds require it.

Siting — standard vs. declared distances§ 3.13.1

Standard siting (most airports)

The RPZ begins 200 ft beyond the end of the area usable for takeoff or landing. For a runway end with no displaced threshold or declared distances, this is 200 ft beyond the physical runway end.

Declared-distances siting

When declared distances apply (FAA approval required, reflected on the FAA-approved ALP), two RPZs are required at each runway end: the approach RPZ begins 200 ft before the threshold; the departure RPZ begins 200 ft beyond the far end of TORA. They normally overlap.