About the HOLMES HARVARD H LANCAIR IV-P
The Lancair IV-P is a standout in the world of general aviation, known for its high performance and sleek design. Introduced in the early 1990s by Lancair International, the IV-P is an evolution of the original Lancair IV, but with significant enhancements to appeal to a particular niche of the aviation market. The 'P' in IV-P stands for 'pressurized,' which is one of the key features that sets it apart from its predecessor and other aircraft in its category.
The motivation for developing the IV-P stemmed from a desire to offer a high-speed, high-altitude capability to private pilots who wanted the convenience of a pressurized cabin. The ability to fly at higher altitudes without the need for supplemental oxygen increased comfort and safety, particularly on longer flights. The pressurization system in the IV-P is robust, allowing the aircraft to maintain a cabin altitude of 8,000 feet while cruising at 24,000 feet.
Key Features and Capabilities
Production of the Lancair IV-P began in earnest in the early 1990s, and it quickly earned a reputation for its exceptional performance. Powered by a 550-horsepower Continental TSIO-550 engine, the IV-P is capable of cruising speeds in excess of 300 knots, making it one of the fastest single-engine piston aircraft ever produced. The combination of speed, range, and pressurization made it a popular choice among business travelers and aviation enthusiasts who valued performance and efficiency.
The Lancair IV-P served a unique niche by offering performance characteristics more commonly found in turboprop or light jet aircraft, but at a lower cost and with the flexibility of piston-engine operations. Its composite construction made it lighter and more aerodynamic than many of its contemporaries, contributing to its impressive speed and fuel efficiency.
Market Position and Use Cases
While production of the factory-built IV-P has ceased, the aircraft remains popular among kit-builders and continues to be revered for its capabilities and performance. The legacy of the Lancair IV-P is one of innovation and pushing the boundaries of what is possible in general aviation.