PHOENIX, Ariz., (April 28, 2014) - Thirty eight years ago this month Allison (now Rolls-Royce) received certification for the 500 shaft horsepower 250-C28 engine.
The C28 engine soon developed with two additional versions. In 1978 the C28B was certified for the Bell 206L-1 LongRanger and the C28C for the MBB (now Airbus Helicopters) Bo 105L. The C28C is identical to the C28B, except without a particle separator.
According to Rolls-Royce marketing 936 C28 series engines were produced. While not the most successful series of M250 engines, about 350 remain in active service today. The engine fleet had accumulated 6,775,600 of flight hours by 2005.
While many M250 shops no longer support this engine series, however ASI is able to help. ASI currently has a tested and ready to go C28 engine in serviceable condition.
For Bell 206L-1 LongRanger operators, ASI also offers an STC that allows an upgrade to the more powerful Series IV C30P engine. This conversion effectively upgrades the 206L-1 into an L-3. ASI also offers C30 engines for rental.
For more information on ASI’s STC upgrade visit Bell 206L-1 C30P STC page (click here).