Bombardier Learjet 85 business jets are to receive integrated standby instrument systems from Meggitt.

The standby system comprises a new-generation integrated secondary flight display (iSFD) and a magnetic heading sensor (MHS), and provides an independent display of aircraft attitude, altitude, airspeed, heading and navigation data.

The displayed attitude information is sourced from internal inertial sensors, heading data from the remotely mounted MHS, and air and navigation data from other systems.

The iSFD includes an integrated air data module option and LED back lights to minimise power usage. These LEDs last longer and exhibit a magnitude of colour saturation and brightness control that exceeds their conventional counterparts.

The MHS is a microprocessor-based unit that generates ARINC 429 magnetic heading messages based on the Earth’s detected magnetic field.

The unit can withstand lightning-induced transients, high-intensity radiated fields, audio frequency and induced signal susceptibility required for modern aircraft.

Previously, Bombardier had chosen Meggitt’s fire protection system for this aircraft.

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