I'm guessing that quoting from the TCDS counts as Fair Use...
MODEL CHARACTERISTICS OF
-211 ENGINE SERIES
The -22C-02 is the basic model installed in the Lockheed Tristar aircraft. The -22C was added May
23, 1972 (see NOTE 15). The -22B-02 is an improved performance variant of the -22C-02 with
higher limits and maximum continuous thrust. The -22B-02 was added April 4, 1973.
The -524 series of engines are growth versions of the -22B with increased takeoff and maximum
continuous ratings achieved by approved temperature capability and efficiency of the HP
turbine components and by increased airflow of the core engine.
The -524-02 engine is fitted in the Lockheed Tristar aircraft (NOTE 15). The -524-02 and -524B-19
were added on March 24, 1976, and the -524B-19 engine was deleted on October 16, 1979 (NOTE
16). The -524-02 was deleted on March 22, 1989 (NOTE 16).
The -524B2-19 and -524B2-39 engines incorporate improved performance margins and handling
features and are installed in Boeing 747 aircraft. The -524B2-19 engine was added on December 6,
1977. The -524B2-39 engine was added on November 17, 1978.
The -524B-02 engine is a derivative of the -524-02 engine with improved hot day thrust capability
and is installed in the Lockheed Tristar aircraft. The -524B-02 engine was added on November 17,
The -524B3-02 engine is a derivative of the -524B-02 engine with reduced weight and improved
specific fuel consumption and is installed in the Lockheed Tristar aircraft. The -524B3-02 was
added October 16, 1979.
The -524C2-19 is an updated derivative of the -524B2-19 with an improved HP
systems and is installed in the Boeing 747 aircraft.
The -524C2-19 was added on April 25, 1980.
The -524B4-02 engine is a derivative of the -524B3-02 engine with improved specific fuel
consumption and is installed in Lockheed Tristar aircraft. The -524B4-02 engine was added on
December 24, 1980.
The -524D4-19 and -524D4-39 engines are updated derivatives of the -524C2-19 engine with
improved specific fuel consumption and are installed in Boeing 747 aircraft. The -524D4-19 engine
was added on June 30, 1981. The -524D4-39 engine was added September 26, 1983.
The -524D4-19 and -524D4-B-19 engines may be used at an increased takeoff thrust subject to flat
rating specified, within the existing operating limitation. This variation was added on January 22,
The -524B4-D-02 engine may be used at an extended maximum takeoff thrust flat rating specified.
This variation was added on August 30, 1987.
The -524B-B-02, -524B2-B-19, -524C2-B019, -524D4-B-19, and -524D4-B-39 models are
introduced by the incorporation of Rolls-Royce Modification SB
72-7730, which introduces an
turbine assembly and necessitates a revision to HP
and IP speed limitations. these
variants were added on August 30, 1987.
The -22B-02 (Mod 72-8700) is a re-rate of the existing -22B-02 model. The new rating increases
takeoff performance at lower ambient conditions. This variant was added on June 6, 1988.
The -524-D4X-19 and -524D4X-B-19 engines are mechanically identical to the -524D4-19 and -524D4-
B-19 respectively but features a 1.6 percent increase in maximum takeoff thrust over the
whole takeoff envelope. These variants were added on March 22, 1989.
Phew. I bet you're sorry you asked !