GÖKBEY Air Ambulance (MEDEVAC): Stretcher Layout, ICU Equipment and Mission Profile

GÖKBEY Air Ambulance (MEDEVAC): Stretcher Layout, ICU Equipment and Mission Profile
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TC-HGG, a light twin serving with Türkiye's Ministry of Health air ambulance service, during a patient transfer in Elmalı. The GÖKBEY answers the same mission with a 6-tonne-class cabin (Photo: Elmalı Municipality / Wikimedia Commons, CC BY 3.0)
TC-HGG, a light twin serving with Türkiye’s Ministry of Health air ambulance service, during a patient transfer in Elmalı. The GÖKBEY answers the same mission with a 6-tonne-class cabin (Photo: Elmalı Municipality / Wikimedia Commons, CC BY 3.0)

An air ambulance asks three things of a helicopter at once: carry a critical patient and a medical team in a cabin they can actually work in, reach the scene and the hospital as fast as possible, and do both safely at night and in poor weather. Turkish Aerospace (TUSAŞ) lists an air ambulance (MEDEVAC) configuration within the mission set of the GÖKBEY (T625). This article separates what the 6-tonne-class platform brings to the role from the data that has not yet been released.

Why aircraft class matters in air medical work

Helicopter emergency medical services in Türkiye rely largely on light twin-engine helicopters. They land easily on hospital rooftops and small pads and are cheap to operate; the trade-off is a cabin that usually tops out at one stretcher and two medical crew.

The GÖKBEY is a medium utility helicopter with a maximum take-off weight of 6,050 kg. Its standard cabin seats up to 12 passengers behind two pilots, so once it is converted to a stretcher layout it outclasses the light twins in both patient count and working space around the patient. That difference matters most in mass-casualty incidents, disaster evacuation and long-distance intensive-care transfers.

MEDEVAC-relevant itemGÖKBEY published figure
Maximum take-off weight6,050 kg
Cabin capacity (standard)2 pilots + up to 12 passengers
Maximum cruise speed297 km/h (160 kt)
Range (standard / auxiliary fuel)740 km / 948 km
Endurance (standard / auxiliary fuel)3.8+ h / 5+ h
Service ceiling6,096 m (20,000 ft)
Power architectureTwin engine — 2×TEI-TS1400
Flight control4-axis digital autopilot

Cabin layout: stretchers and medical crew

The GÖKBEY cabin is designed to be modular. Standardised attachment points and a rail-equipped floor allow seats to be removed and replaced with stretcher units or medical equipment consoles. Wide sliding doors make it easier to load a stretcher from the side without awkward angles.

How the cabin is divided in the ambulance role is set by each customer’s specification. A typical medium-class MEDEVAC cabin carries one or two stretchers, crew seats positioned at the patient’s head and medical equipment fixed to the ceiling and wall rails.

NOTE

The number of stretchers, medical crew seats and the placement of equipment in the GÖKBEY air ambulance configuration have not been officially released item by item. The equipment list below reflects what is standard in air ambulance helicopters.

Intensive-care equipment: what goes in the cabin

Ministry of Health air ambulance TC-HGG: light twins form the backbone of helicopter EMS in Türkiye (Photo: Elmalı Municipality / Wikimedia Commons, CC BY 3.0)
Ministry of Health air ambulance TC-HGG: light twins form the backbone of helicopter EMS in Türkiye (Photo: Elmalı Municipality / Wikimedia Commons, CC BY 3.0)

What separates an air ambulance from simple patient transport is the ability to deliver intensive-care-level treatment throughout the flight. Every device installed must be approved for aviation use in terms of vibration and electromagnetic compatibility.

EquipmentFunction
Stretcher systemPatient restraint, loading and unloading
Transport ventilatorRespiratory support
Patient monitorECG, pulse, blood pressure, SpO2
DefibrillatorCardiac arrest and arrhythmia treatment
Oxygen systemContinuous oxygen in flight
Suction unitAirway management
Infusion pumpsContinuous drug and fluid therapy
Neonatal incubator (optional)Premature infant transfer

The equipment draws its power from the helicopter’s electrical system. A medium-class platform’s greater generating capacity and mounting space make it possible to run several devices at once.

The golden hour: what speed buys

In emergency medicine the “golden hour” is the critical window for getting a seriously injured patient to definitive care. An air ambulance exists to shorten that window, and the gain grows in mountainous terrain and winter conditions where road access is slow.

A rough calculation based on GÖKBEY’s 297 km/h maximum cruise speed gives the following straight-line flight times:

Straight-line distanceApprox. flight time at max cruise
50 km~10 minutes
100 km~20 minutes
150 km~30 minutes
200 km~40 minutes
300 km~61 minutes

These are theoretical times that exclude take-off, landing, weather and wind. On a real mission, time on the ground at the pickup point is added on top.

Twin engines, night and bad weather

A large share of air ambulance flying happens at night, over built-up areas or into confined landing sites. The GÖKBEY’s two TEI-TS1400 turboshafts let the surviving engine deliver short-duration high power if the other fails (OEI) — a baseline safety requirement for an aircraft that works over city centres and onto hospital rooftops.

The glass cockpit and 4-axis digital autopilot reduce pilot workload at night and in low visibility; heading and altitude hold free the pilot to concentrate on navigation and landing-site assessment. A 6,096 m service ceiling and a design optimised for hot-and-high conditions provide the margin needed for high-altitude regions in eastern Türkiye.

Light twin versus medium class: the mission difference

CriterionLight twin EMS helicopterGÖKBEY (medium class)
Weight class~3 tonnes6-tonne class (6,050 kg)
Typical stretcher capacity1Configuration-dependent, not officially released
Working space at patientLimitedLarger cabin
Hospital rooftop compatibilityVery highDepends on pad load rating
Mass casualty / disaster evacuationLimitedBetter suited
Operating costLowHigher

The two classes complement each other rather than compete. Light twins excel at rapid urban response; the medium class comes into its own on long-distance ICU transfers, multi-casualty incidents and post-disaster evacuation.

Where it sits in the programme

DateMilestone
6 September 2018First flight of prototype P1
19 April 2023First flight on TS1400 engines
29 October 2024First delivery to the Gendarmerie General Command
24 July 2025Order for 57 aircraft announced at IDEF 2025
19 August 2025First serial-production delivery (J6004)
30 April 2026Delivery to the Turkish Land Forces

The air ambulance configuration has been part of the GÖKBEY’s mission set since the type was introduced. However, no separate order from a health authority, delivery schedule or certification status for a MEDEVAC kit has been officially announced.

Reading the numbers properly

Air ambulance performance is directly affected by the weight of installed medical equipment. A stretcher system, ventilator, oxygen supply and medical crew consume a large share of useful load, which can push range and endurance below catalogue values. The flight times in the speed table are theoretical, and differences between prototype and series configuration may also shift final figures.

Frequently asked questions

Is there an air ambulance version of the GÖKBEY? Yes. An air ambulance (MEDEVAC) configuration is part of the mission set TUSAŞ defines for the GÖKBEY. The modular cabin allows seats to be replaced with stretchers and medical equipment.

How many stretchers can the GÖKBEY carry? The stretcher count and medical crew seating have not been officially released. The final layout is determined by customer specification.

What medical equipment does a GÖKBEY air ambulance carry? Standard air ambulance equipment includes a stretcher system, transport ventilator, patient monitor, defibrillator, oxygen system, suction and infusion pumps. A GÖKBEY-specific kit list has not been published item by item.

How long does the GÖKBEY take to fly 100 km? At its 297 km/h maximum cruise speed, a 100 km straight-line flight takes roughly 20 minutes, before take-off, landing and weather are factored in.

Has the Turkish Ministry of Health ordered the GÖKBEY? No GÖKBEY order or delivery for a health authority has been officially announced. Announced deliveries have gone to the Gendarmerie General Command and the Land Forces.

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