A method of temperature calibration of a block of micromechanical accelerometers that is part of an independent strapdown inertial measurement module is presented. The temperature dependence of each additive component of the error is investigated. The coeffi cients of a model of the standard deviation and zero drift of the MMA7331L accelerometer are calculated. The article will present a method of investigating the temperature dependences of the standard deviation and zero drift of microelectromechanical devices, i.e., the MEMS accelerometers of an inertial measurement module. The module is a combined hardware and software device consisting of three submodules, each of which contains a VG910Q uniaxial fi ber-optic gyroscope (Fizoptika, Russia) and an MMA7331L triaxial MEMS accelerometer (Freescale Semiconductor, Inc., United States) (1). The digital circuit of the submodules includes an ADS1281IPW 32-bit analog-to-digital transducer with delta-sigma archi- tecture; Cyclon III EP3C25F324I7 programmable logical integrated circuit; and MAX3465ESD transponders of an RS-422- interface with ISO7221MD galvanic isolation. The inertial measurement module is intended for use in determining the orienta- tion and location of an aircraft in inertial space. The operation of an inertial measurement module onboard an aircraft entails its use over a broad range of temperatures. Due to the infl uence of temperature on the noise characteristics of inertial sensors, there occurs a reduction in the precision of the navigation signals. One possible solution of this problem is temperature stabilization of the inertial measurement module, which may be achieved by means of thermostatic control. However, such an alternative re- quires additional structural modifi cation and a complication of the functional circuit of the inertial measurement module, which leads to an increase in its weight and overall dimensions. To implement temperature stabilization of the output navigation data of the module, therefore, it is more preferable to perform temperature calibration in the course of which the parameters of a model of the zero drift signal and the standard deviation of the inertial sensors of the navigation system are determined. Temperature investigations of fi ber-optic gyroscopes are presented in (2, 3), where a mathematical model of the VG910Q fi ber-optic gyroscope in the graphical environment of Simulink simulation modeling was developed. In the present article, the temperature dependences of the zero drift and standard deviation of the MMA7331L accelerometer are averaged along three collinear sensitivity axes. A method of temperature calibration of an inertial measurement module under labora- tory conditions is proposed. Description of Block of Microelectromechanical Accelerometers. The MEMS accelerometer is a device measur- ing several micrometers to several millimeters and is used to measure the projection of an apparent acceleration, which rep- resents the geometric difference between the true acceleration of an object and free fall acceleration. MEMS accelerometers are integrated systems that combine mechanical and electronic components on a single chip. The operating principle of an