A pressurized twin-turbine platform delivering increased speed, range, and gross weight capability while retaining the structural proportions of the 200-series.
Aircraft Photo Copyright by Gerrit Griem
The King Air 300 represents a performance-focused advancement within the stretched King Air lineage. Rather than expanding cabin dimensions, the 300 refined propulsion and aerodynamic elements to increase cruise speed and operational efficiency within the existing 200-series structure. It reflects a deliberate emphasis on performance margin and range extension rather than physical scale growth. For operators seeking incremental capability gains without altering cabin class, the 300 occupies a distinct position in the King Air evolution.
Developed as a higher-performance successor to the 200-series, the 300 incorporated more powerful PT6A engines, aerodynamic refinements, and increased maximum takeoff weight. These updates produced measurable improvements in cruise speed, climb performance, and range while preserving the fuselage dimensions introduced with the 200. The aircraft maintained the handling characteristics and systems architecture familiar to King Air operators, allowing for continuity of training and operational procedures. Its introduction signaled a shift toward greater cruise efficiency within a proven structural framework.
317 kts
1,240 nm
14,000 lbs
Source: Published performance figures from Vref (2021 Vol. 4). Actual performance varies by configuration and operating conditions.
This aircraft is commonly operated by corporate departments, charter providers, and special-mission operators requiring higher cruise speeds within turboprop economics. It often appeals to buyers upgrading from the 200-series who prioritize additional performance margin without transitioning into jet operations. Owners who align well with the 300 typically operate structured regional or cross-country missions where incremental speed and payload flexibility materially affect scheduling efficiency. When matched appropriately, the platform offers expanded capability within a mature operational ecosystem.
The original 300 introduced higher-output PT6A engines and aerodynamic refinements to the stretched King Air platform, increasing cruise speed and maximum takeoff weight. Structural proportions and cabin dimensions remained aligned with the 200-series, preserving established cabin scale and baggage capacity. Performance gains were most evident in climb and high-altitude cruise efficiency rather than fuselage expansion. This configuration positioned the 300 as a performance-driven refinement of the established airframe.
The B300 incorporated incremental updates focused on systems modernization and operational consistency rather than structural redesign. Avionics evolution, equipment refinements, and performance standardization strengthened long-term fleet supportability. Cabin dimensions and airframe geometry remained consistent with the original 300 configuration, maintaining mission continuity. These refinements reinforced the aircraft’s role as a higher-speed turboprop within the stretched King Air category.
The 300LW introduced a reduced empty weight configuration while retaining the propulsion and aerodynamic framework of the standard 300. Structural dimensions and cabin proportions remained aligned with the baseline model, though weight savings provided marginal payload flexibility. Performance parameters reflected the same horsepower configuration within a lighter certified weight structure. This variant positioned the 300LW as a weight-optimized interpretation of the 300 platform.
The 300-series operates within a broad envelope shaped by increased horsepower and higher gross weight relative to earlier models. Its performance advantages are most apparent in cruise efficiency and climb capability, though real-world results remain influenced by loading and environmental conditions. Range and speed benefits are best realized when weight planning and altitude selection are managed deliberately. The aircraft’s strengths emerge in structured missions where incremental cruise gains translate into scheduling flexibility.
Conventional King Air flight deck architecture in early configurations, frequently updated through avionics modernization programs to align with contemporary navigation and compliance requirements.
Twin Pratt & Whitney PT6A engines configured for increased horsepower, supporting higher cruise speeds and elevated gross weight capability.
Extensive supplemental type certificate availability, including avionics upgrades, performance enhancements, interior refurbishments, and mission-specific equipment installations.
A stretched, pressurized cabin consistent with 200-series dimensions, providing executive or utility seating with expanded payload flexibility relative to compact variants.
Supported by a mature global service network with established inspection cycles and broad parts availability due to substantial fleet presence.
Well suited for regional and mid-range operations where incremental cruise speed and payload flexibility improve scheduling efficiency without transitioning to jet ownership.
The King Air 300 aligns with operators seeking higher cruise performance within the established stretched King Air cabin framework. It provides meaningful gains in speed and gross weight capability over earlier models while preserving familiar structural proportions and systems architecture. Buyers expecting jet-level cruise velocities will encounter inherent turboprop limitations, though many missions benefit from its efficiency and range balance. When deployed within its intended envelope, the 300 remains a performance-oriented evolution of the proven King Air platform.
Aircraft commonly cross-shopped for similar missions or ownership priorities.
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