Part #:

Model: ALT-1000

OEM:

Collins Aerospace

Desc:

Radio Altimeter Transceiver

Part Number :


ALT-1000

 

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 (ALT-4000 is intended for single installations in Category II and for dual or triple installations in Category IIIa)
  • 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
  • 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
  • A separate RAC-870 Radio Altimeter Converter is Required if there is a need to convert analog altitude data from the ALT-1000 into an ARINC 429 serial format
  • Versions compatible with Collins FPA-80 Flight Profile Advisory aural alert unit
  • Versions available that directly plug in and replace the ALT-55B/-50A

 

SPECIFICATIONS

FAA TSO: C87 Software: DO-178B Level A (critical)
Eurocae: ED-14C Environmental: DO-160C, /A2F2/BB/ CLMNY/E1XXXXXZ/ BZ/AZ/AZ/ Y/AZ/Z3Z3/XX
Dimensions: 3.313" H x 3.562" W x 13.925" L Weight: 4.7 lb
Cooling: No forced air required Temperature: -55°C to 70°C
Altitude: 55,000 ft. Power Req: 28 ± 20% V DC, 16 W
Center Freq: 4300 ±15 MHz RF Power Output: 350 mW nominal
Modulation: Selectable, 49, 50 or 51 Hz Linear FM Deviation: 100 MHz, nominal
ALT-55 Mode: -20 to +500ft; 0.02(h+20)Vdc System Accuracy: 500 to 2,500 ft ±3%
Output Loading: 20 standard loads per bus(digital); 1mS max (analog) Time constant: 0.09 ± 0.01s
Tripped Outputs: < +1.5Vdc @ 100mA max Untripped Outputs: < 20µA @ 30Vdc max
Factory Trip: -005: 200, 500, 1000, 1500ft; -006: 200, 250, 1000, 1200ft Delay (AID) Selections: 20, 26, 32, 40, 46, 52, 57, 63ft
Part Number: Description:
822-1939-005 Adjustable Trips, ALT-55B -001/-011 Replacement
822-1939-006 Fixed Trips, ALT-55B -002/-012 Replacement
822-1939-025 Adjustable Trips, ALT-50B -001/-011 Replacement

 

822-1939-001
- Radio Altimeter Transceiver

NSN: 5841-01-524-9588

Price Condition Status
REQUEST SV OUTRIGHT REQUEST LEAD TIME
822-1939-002
- Radio Altimeter Transceiver
Price Condition Status
REQUEST NEW OUTRIGHT REQUEST LEAD TIME
822-1939-005
- Radio Altimeter Transceiver

NSN: 5841-01-569-6164

Price Condition Status
REQUEST SV OUTRIGHT REQUEST LEAD TIME
REQUEST NEW OUTRIGHT REQUEST LEAD TIME
822-1939-006
- Radio Altimeter Transceiver

NSN: 5841-01-564-6729

Price Condition Status
REQUEST NEW OUTRIGHT REQUEST LEAD TIME
822-1939-021
- Radio Altimeter Transceiver
Price Condition Status
REQUEST NEW OUTRIGHT REQUEST LEAD TIME
822-1939-025
- Radar Altimeter R/T (ALT-50A Repl)
Price Condition Status
REQUEST NEW OUTRIGHT REQUEST LEAD TIME

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