ALT-4000

FEATURES

    Low Range Radio Altimeter
    Form & fit replacements of discontinued ALT-50A/-55B (see P/N chart below for specific replacement information)
    Intended for single installations certified for Category II landings and for dual or triple installations in Category IIIa (ALT-1000 is intended for single installations in Category II ONLY)
    Measures radar height above terrain up to 2,500 feet
    Accurate to within two feet at the critical low altitudes
    Entirely digital, allowing for complete end-to-end monitoring
    Frequency-Modulated Continuous Wave (FMCW) technology
    Versions with analog outputs capable of driving existing indicators
    Analog outputs in ALT-55B or ARINC 552A format - strap selectable
    Four ARINC 429 digital buses
    Used with ANT-52 antennas
    Available with standard or shop-adjustable trips (see table below)
    Full temperature/altitude capability
    Stringent lightning and HIRF hardening
    Single unit packaged in a 3/8 ATR short-low package
    Package and aircraft mounting are identical to the ALT-55B
    Lightweight at 4.7 pounds with additional aircraft installation delay selections that can reduce antenna cable weight
    Front panel computer port for system configuration and access to system faults
    Computer interface that allows for flight simulation to aid checks of associated systems
    Versions compatible with Collins FPA-80 Flight Profile Advisory aural alert unit
    Versions available that directly plug in and ｒｅｐｌａｃｅ the ALT-55B/-50A