131-9A APU HIGH EFFICIENCY MODE (HEM) Airbus narrow-body operators flying with 131-9A APU can save up to $11,000 in annual fuel costs and improve on-wing-time by as much as 17% with the new HEM upgrade. Learn more
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ALA 52B Radar Altimeter

ALA-52B Radar Altimeter

ALA-52B Radar Altimeter

The ALA-52B radar altimeter is a lightweight, solid-state, airborne altimeter providing accurate digital height measurements above terrain during aircraft approach, landing and climb-out phases.

Our ALA-52B radar altimeter (RALT), a lightweight, solid-state, airborne altimeter, provides accurate digital height measurements above terrain during aircraft approach, landing and climb-out phases. The operating range is -20 feet to +7500 feet. The ALA-52B RALT also contains fault memory and provides built-in test equipment (BITE) interfaces for use in a central maintenance computer (CMC) or in a centralized fault display system (CFDS) per ARINC 604 and Airbus Industrie ABD-0048.

Other key attributes:

  • ARINC 707-6 and EUROCAE ED-30 compliant
  • Frequency: 4.2 GHz to 4.4 GHz
  • Operating range: -20 feet to +7500 feet (double that of other ARINC 700 series altimeters)
  • Fast Fourier transform algorithm and display select panel (DSP) processing improves accuracy
  • Enhanced multipath and double bounce rejection
  • FPGA certified to DO-254 Level A
  • Software certified to DO-178B, Level A
  • 3 multifunction concept unit (MCU) form factor
  • Weight ~ 4.1 kilograms (9.1 pounds)