CFM International Engine Status Report

June 15, 1997

CFM56-2 (Commercial Applications)

  • Current rating is 22,000 pounds (98 kN) thrust.
  • Engine entered commercial service in April 1982.
  • Engine flight hours total 11.4 million.
  • Applications are the DC-8 Super 71, 72, and 73.
  • Aircraft in service total 110.
  • High-time engine has accumulated 37,497 flight hours.
  • High-cycle engine has accumulated 16,246 cycles.
  • Engine-caused shop visit rate of .137 is equivalent to one visit per 7,299 engine flight hours.1
  • Dispatch reliability rate is 99.95 percent.1

 

CFM56-2 (Military Applications)

  • Current rating is 22,000 to 24,000 pounds 
    (98 to 107 kN) thrust.
  • Engine entered military service in June 1984.
  • Engine flight hours total 5.5 million.
  • Applications are the Boeing KC-135R, C-135FR, and KE-3A tankers, E-3A Airborne Warning and Control System aircraft, RC-135 reconnaissance and E-6A submarine communications aircraft.
  • Aircraft in service total 456.
  • High-time engine has accumulated 9,012 flight hours.
  • High-cycle engine has accumulated 7,910 cycles.
  • Engine-caused shop visit rate of .026 is equivalent to one visit per 38,462 engine flight hours. 1

 

CFM56-3

  • Current rating is 18,500 to 23,500 pounds 
    (82 to 104 kN) thrust.
  • Engine entered revenue service in December 1984.
  • Engine flight hours total 61.3 million.
  • Applications are Boeing 737-300, 737-400, & 737-500.
  • Aircraft in service total 1,721.
  • High-time engine has accumulated 37,122 flight hours.
  • High-cycle engine has accumulated 36,880 cycles.
  • Engine-caused shop visit rate of .070 is equivalent to one visit per 14,286 engine flight hours. 1
  • Dispatch reliability rate is 99.96 percent. 1

 

CFM56-5A

  • Current rating is 22,000 to 26,500 pounds 
    (98 to 118 kN) thrust.
  • Engine entered revenue service in April 1988.
  • Engine flight hours total 9.5 million.
  • Applications are the Airbus Industrie A319 and A320.
  • Aircraft in service total 327.
  • High-time engine has accumulated 22,714 flight hours.
  • High-cycle engine has accumulated 16,799 cycles.
  • Engine-caused shop visit rate of .074 is equivalent to one visit per 13,514 engine flight hours. 1
  • Dispatch reliability rate is 99.97 percent. 1

 

CFM56-5B

  • Current rating is 22,000 to 32,000* pounds 
    (98 to 142 kN) thrust.
  • Engine entered revenue service in April 1994.
  • Engine flight hours total 378,000.
  • Applications are Airbus Industrie A319, A320, & A321.
  • Aircraft in service total 69.
  • High-time engine has accumulated 6,401 flight hours.
  • High-cycle engine has accumulated 6,066 cycles.
  • Engine-caused shop visit rate of .101 is equivalent to one visit per 9,901 engine flight hours. 1
  • Dispatch reliability rate is 99.91 percent. 1

 

CFM56-5C

  • Current rating is 31,200 to 34,000 pounds 
    (139 to 151 kN) thrust.
  • Engine entered revenue service in March 1993.
  • Engine flight hours total 3.5 million.
  • Application is the Airbus Industrie A340.
  • Aircraft in service total 104.
  • High-time engine has accumulated 18,612 flight hours.
  • High-cycle engine has accumulated 2,931 cycles.
  • Engine-caused shop visit rate of .046 is equivalent to one visit per 21,739 engine flight hours. 1
  • Dispatch reliability rate is 99.80 percent. 1