Beechcraft King Air 350iER

Introduction

The Beechcraft King Air 350iER represents the pinnacle of the King Air line—a turboprop aircraft that combines extended endurance (ER) with the refined comfort of the 350i variant. Built by Textron Aviation, this upgraded model is purpose-built for missions that require long-range endurance, multi-role capability, and a first-class passenger experience.

The "iER" stands for "Integrated Executive and Extended Range," a rare blend in the turboprop world. With enhanced fuel capacity, superior avionics, and one of the quietest cabins in its class, the 350iER is not only designed to go farther—it’s also built to make every minute aloft more productive and comfortable.

Whether it's a VIP charter flight, air ambulance mission, remote corporate trip, or government surveillance operation, the Beechcraft King Air 350iER delivers exceptional performance in demanding environments, without sacrificing luxury.

Specification of Beechcraft King Air 350iER

Here’s an overview of the key specifications for the Beechcraft King Air 350iER:

• Manufacturer: Beechcraft (Textron Aviation)

• Crew: 1–2 pilots

• Passenger Capacity: 8–10 passengers (varies by configuration)

• Length: 46 ft 8 in (14.22 m)

• Wingspan: 57 ft 11 in (17.65 m)

• Height: 14 ft 4 in (4.37 m)

• Cabin Height: 4 ft 9 in (1.45 m)

• Cabin Width: 4 ft 6 in (1.37 m)

• Cabin Length: 19 ft 6 in (5.94 m)

• Max Takeoff Weight (MTOW): 16,500 lbs (7,484 kg)

• Usable Fuel Capacity: 5,192 lbs

• Baggage Capacity: 71 cubic feet (internal + external)

The 350iER includes reinforced landing gear, increased fuel tanks, and structural enhancements over the standard 350i, allowing it to support heavier missions with greater range and reliability.

Performance and Range of Beechcraft King Air 350iER

The standout feature of the King Air 350iER is its exceptional range and endurance—ideal for long-haul charter routes or extended missions where reliability and fuel efficiency are paramount.

• Maximum Cruise Speed: 312 knots (578 km/h or 359 mph)

• Maximum Range: 2,692 nautical miles (4,985 km)

• Endurance: Up to 12+ hours (mission-dependent)

• Service Ceiling: 35,000 feet

• Takeoff Distance (MTOW): ~4,057 feet (1,237 m)

• Landing Distance: ~3,217 feet (981 m)

The aircraft’s long-range capability, paired with its ability to operate from short and semi-prepared runways, makes it a unique contender in the turboprop charter market.

It can easily cover routes like New York to Los Angeles, Dubai to Nairobi, or Singapore to Dhaka without refueling, depending on payload and weather conditions.

Cabin Comfort and Interior of Beechcraft King Air 350iER

While the “ER” designation focuses on performance, the “i” in King Air 350iER stands for indulgence—and it delivers in full.

The cabin is not only pressurized and climate-controlled, but also features soundproofing technology that makes it one of the quietest turboprop cabins in the world. Travelers can expect a level of comfort previously reserved for light jets.

Key cabin features:

• 8 Executive Leather Seats in a double-club layout (reclining, swiveling)

• Private Aft Lavatory with solid door

• Optional Refreshment Center or Galley

• Fold-out Work Tables, USB ports, and power outlets

• LED Lighting with Adjustable Mood Settings

• Upgraded Bongiovi Audio System (optional)

• Wi-Fi, Satcom, and In-Flight Entertainment (operator-dependent)

The 350iER also includes the “Quiet Cabin” system and optional “Venue” cabin management system, offering Bluetooth media streaming and touchscreen lighting and temperature controls.

For VIPs, medical teams, or surveillance personnel needing to stay sharp for hours at a time, this comfortable cabin is a major advantage.

Avionics and Technology of Beechcraft King Air 350iER

In the cockpit, the King Air 350iER is powered by the Collins Aerospace Pro Line Fusion® avionics suite—a sophisticated yet intuitive system designed to reduce pilot workload and enhance situational awareness.

Core features include:

• Three 14-inch high-resolution touchscreens

• Synthetic Vision System (SVS)

• Dual FMS with Graphical Flight Planning

• WAAS GPS and LPV Approaches

• ADS-B Out/In, TCAS II, and TAWS

• Weather Radar and Satellite Weather Integration

• Autopilot with Auto-Throttle Capabilities (optional)

Mission-specific variants can be configured with:

• EO/IR sensors for ISR missions

• Satcom data links

• Operator workstations or surveillance consoles

• Medical monitors and life support systems in the MEDEVAC configuration

Whether you're flying corporate executives or configuring it for high-stakes surveillance, the technology in the 350iER ensures top-tier reliability, situational awareness, and adaptability.

Operational Advantages of Beechcraft King Air 350iER

The Beechcraft King Air 350iER is a favorite among operators, charter companies, and military/government agencies due to its unmatched operational versatility.

1. Long-Range Missions

Its endurance of 12+ hours and 2,600+ NM range allows for nonstop regional and transnational operations, making it ideal for ISR, border patrol, and intercontinental executive charter.

2. Short and Rough Field Access

With robust landing gear and STOL performance, the 350iER can operate from gravel, dirt, and short runways, accessing over 14,000 airports worldwide—far more than most jets.

3. Low Operational Costs

The 350iER is 50–60% more fuel-efficient than light jets for short/medium-haul missions, reducing direct operating costs and carbon footprint.

4. Multi-Mission Flexibility

With quick-change interiors and factory-certified modifications, the aircraft easily transitions between passenger charter, cargo, surveillance, or MEDEVAC roles.

5. Global Support Network

Textron’s strong global service network ensures parts availability, MRO support, and rapid dispatch reliability, which operators value highly.

This makes the 350iER not only a business asset but also a critical tool for missions where failure is not an option.

Who Should Charter Beechcraft King Air 350iER

The Beechcraft King Air 350iER is a true multi-mission aircraft, appealing to a wide spectrum of users:

• Corporate Executives & VIPs: Those who need nonstop regional travel with a comfortable, jet-like experience.

• Government Agencies & Military: Ideal for ISR, maritime patrol, border surveillance, and secure transport.

• Medical Evacuation Teams: Long-haul MEDEVAC with full life-support equipment and multiple stretchers.

• Oil, Mining, and Infrastructure Firms: Transporting teams to remote, rugged sites with limited airport infrastructure.

• NGOs & Humanitarian Relief: Quick-deploy capability to crisis zones with adaptable cabin layouts.

• Special Missions & Surveillance Operators: Sensor-ready airframe with long loiter time and operator stations.

For charter brokers, this aircraft enables access to premium clients and government contracts alike.

Charter Cost Estimates for Beechcraft King Air 350iER

The 350iER is more expensive to operate than the standard 350i due to fuel load and mission flexibility, but still far more economical than jets with similar range.

Here are general charter pricing estimates:

• Hourly Charter Rate: $2,500 to $3,500 USD

• Regional One-Way (1,200–1,500 NM): ~$9,000–$13,000 USD

• Full-Day Surveillance or Medical Ops: Custom pricing depending on mission duration and configuration

• Empty Leg Flights or Repositioning: Available at significant discounts based on operator availability

Charter operators may offer dynamic pricing based on fuel stops, sensor payloads, and crew requirements, especially for specialty contracts.

Conclusion

The Beechcraft King Air 350iER is a rare breed—an aircraft that flies farther, carries more, and does more than any other turboprop in its category. It seamlessly integrates long-range endurance, luxury passenger experience, and mission-specific adaptability in a single, rugged platform.

Whether you're flying over oceans, deserts, or mountain regions, this aircraft gets the job done with reliability and class. Its ability to offer executive comfort with tactical readiness makes it a game-changer in both the charter and special mission aviation sectors.

For charter travelers seeking jet-like comfort with greater reach and flexibility—or for operators seeking an aircraft that serves both corporate and government missions—the King Air 350iER is not just a smart choice. It's a strategic one.