Robert Gray Aaf Airport (KGRK), Texas
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Robert Gray AAF (KGRK) is a joint-use military and civil airfield serving Fort Hood near Killeen, Texas, with a 9,997-foot primary runway capable of handling large fixed-wing traffic alongside extensive military rotary-wing and unmanned aircraft activity. The field operates under a towered, PPR-driven access structure for both civil and military traffic, with customs clearance handled at nearby Austin-Bergstrom rather than on site.
Runways
Robert Gray Aaf Airport has one paved runway, 15/33, 9,997 ft long and 200 ft wide, with an asphalt and concrete surface.
Runway geometry from published threshold coordinates. Not for navigation.
Helipads and surfaces under 500 ft are excluded.
Source: FAA Form 5010.
Fuel and airfield services
Robert Gray Aaf Airport has Jet A available on the field. Fueling is available 24 hours a day, every day, and the airport has an operating control tower.
Source: FAA Form 5010 / NASR.
Customs
Robert Gray Aaf Airport does not clear customs. The nearest port of entry is Austin-Bergstrom International (KAUS), 53 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Robert Gray Aaf Airport recorded 1,755 business aviation movements in 2025. Traffic peaks in July. Business aviation traffic at KGRK is concentrated with a notable peak in July, according to FAA TFMSC data.
Business jet movements, FAA TFMSC count. Peak month July, 212 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Weather station is 3.5 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Robert Gray Aaf Airport has published operating constraints in four categories: access, runway notes, pavement strength and other notes.
Military fuel: A++ grade, prior permission required only.
Military: all inbound PPR aircraft must contact base operations 20 minutes prior to landing.
Civil: prior permission required for all civil aircraft; contact the airport manager.
Military: prior permission required for military ramp access; contact base operations. Civil ramp (KFHRA) access requires separate contact.
Military: precision approach radar is not available, except for emergencies, from 0500 to 1300Z and later.
Military: base operations approval is required for ramp access.
Military customs, agriculture, and immigration: customs available with 72-hour prior notice required. During normal duty hours, contact the PMO customs office; after hours, contact base operations.
Military restriction: Taxiway B from Taxiway C to the Runway 15 approach end is restricted to aircraft with an ACN of 24 or less.
Restriction: Taxiway D and the segment of Taxiway B from Taxiway C to the Runway 33 approach end are not authorized for DOD aircraft unless a Class B runway is required.
On Runway 33, the first 1,000 feet is PEM surface, with the remaining 8,997 feet grooved.
Weather-related visibility obstructions restricted from south through northwest.
Bearing strength for Runway 15/33: ST175, SBTT593, TRT840, TRT585.
A 50-foot fuel service safety zone is enforced during all refueling operations. Space-available passenger operations are prohibited, both inbound and outbound. No off-airfield transient aircrew transportation is available. Wide body aircraft 180-degree turns are prohibited on Runway 15/33. Wide body aircraft movement on the south ramp is authorized only under control of follow-me and ground marshal personnel.
Wide body aircraft 180-degree turns are allowed only on concrete areas at each end of runway 15/33. Wide body aircraft movement on the south ramp is authorized only under control of follow-me and ground marshal personnel.
The PCN number was taken from the RGAAF Airfield Pavement ATIIP AAF-19-02 report dated 5 September 2019.
Civil Jet A fuel is available from 0400 to 2030; contact for service after those hours.
Caution: extensive helicopter operations in the vicinity of Fort Hood; some wires are not conspicuously marked and blend with the terrain.
Military: limited parking available.
Military jet aircraft starting units on hand: one AM32-95, one LASS TUG TMD-250, and one ESSEX B809.
Traffic pattern altitudes: left and right patterns apply; rotary wing at 1,500 feet, UAS at 2,000 feet (west traffic only), fixed wing at 2,500 feet, and pure jet or overhead pattern at 3,000 feet.
Closed circuit television is in operation.
Restriction: Taxiway B from Taxiway C to Taxiway E is restricted to aircraft with a wingspan of 200 feet or less.
Caution: extensive helicopter sod operations.
Military customs, agriculture, and immigration: USDA agricultural inspection is not available.
Military: 24-hour notice is required for lavatory and water service.
Military: base operations has fax and phone contact available.
Civil: airport UNICOM frequency is 122.825 (Killeen Radio).
Military: space-available passenger operations are prohibited, both inbound and outbound.
Military: no off-airfield transient aircrew transportation is available.
Military: a 50-foot fuel service safety zone is enforced during all refueling operations.
Caution: extensive unmanned aircraft system activity within Class D airspace and between Class D airspace and R6302.
Traffic pattern: UAS pattern altitude is 2,000 feet, west traffic only.
A water tower stands 1,182 feet from the east side of the airfield.
Military: no de-icing capability is available.
Source: FAA Chart Supplement.
Nearby airfields
Robert Gray Aaf Airport has five airfields within 29 NM. The closest is Skylark Field (KILE), 7.41 NM east.
Source: Skystar calculation from official coordinates.
Skystar at KGRK
We arrange catering, fuel and trip support here. Supplier prices reach you unchanged; our coordination fee sits on its own line.
The same order, priced two ways.
$2,400.00 catering order at KGRK.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
It does not move with the size of the order.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
Does KGRK have customs on site?
Robert Gray AAF (KGRK) does not have onsite customs clearance. The nearest customs airport of entry is Austin-Bergstrom (KAUS), located about 53 nautical miles away. Crews requiring customs processing for international arrivals need to plan a stop at KAUS or coordinate alternate clearance arrangements in advance. Military customs support at KGRK requires 72-hour prior notice, and USDA agricultural inspection is not available on the field. This makes advance planning essential for any flight with an international leg.
Is fuel available at Robert Gray AAF at any hour?
Jet A is the only fuel type available at Robert Gray AAF (KGRK), and civil Jet A service runs from 0400 to 2030 local. Aircraft arriving after those hours require prior arrangement for after-hours service. Military fuel service is also subject to prior permission required (PPR) status. A 50-foot fuel service safety zone is enforced during all refueling operations. Crews should coordinate fueling needs ahead of arrival given the attended-hours structure at this field.
What is the runway length and surface at KGRK?
KGRK's primary runway, 15/33, measures 9,997 feet long and 200 feet wide, surfaced in asphalt-concrete. The first 1,000 feet of Runway 33 is porous European mix (PEM), with the remaining 8,997 feet grooved. Bearing strength for Runway 15/33 is listed as ST175, SBTT593, TRT840, TRT585. The field also has three helicopter pads with concrete or asphalt surfaces, all under 100 feet in length. This runway length supports a wide range of fixed-wing traffic, including larger transport-category aircraft.
Are there taxiway restrictions for aircraft at Robert Gray AAF?
Yes, Robert Gray AAF (KGRK) has several taxiway restrictions tied to aircraft size and type. Taxiway B between Taxiway C and Taxiway E is restricted to aircraft with a wingspan of 200 feet or less, while the segment from Taxiway C to the Runway 15 approach end is limited to aircraft with an ACN of 24 or less. Taxiway D and the portion of Taxiway B from C to the Runway 33 approach end are not authorized for DOD aircraft unless a Class B runway is required. Dispatchers should verify aircraft dimensions and classification numbers against these limits before planning ground movement at KGRK.
Is prior permission required to operate at KGRK?
Yes, prior permission required (PPR) applies broadly at Robert Gray AAF (KGRK). All civil aircraft must contact the airport manager for PPR before arrival, and all inbound PPR aircraft must contact base operations 20 minutes prior to landing. Military ramp access also requires PPR coordination, and base operations approval is needed for ramp access generally. Given these layered requirements, crews should confirm authorization well ahead of any arrival at this field rather than assuming ad hoc access.