Part #:

Model: DRI-55

Collins Aerospace - Radio Altimeter Indicator
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Part Number :


DRI-55
FEATURES
  • Digital Radio Altitude Indicator used with Collins ALT-50/A and ALT-55B Radio Altimeter System
  • Small size measuring only 0.825" in height for minimal panel space occupancy
  • Provides digital display of aircraft height above terrain from 2000 to 2500 feet to touchdown
  • Decision height continuously displayed on right side of indicator
  • Optional DH (decision height) annunciator on front indicates when aircraft reaches decision height (see table below)
  • Output available to drive an external aural decision height annunciator
  • Selectable system self-test from front panel
  • Models available with black or gray front frame (see table below)
  • Models available with 5 or 28 Volt lighting
  • Models available with linear and nonlinear display dimming (see table below)
SPECIFICATIONS
Dimensions: 3.375"W x 0.825"H x 7.03"L Weight: 0.7 lb.
FAA TSO: C87 Temperature: -20 to +70C (operating)
RTCA: DO-160 Env. Cat. /A2C1/A/PKS/EXXXXXZBAZZ Service Altitude: 35000 ft.
Input Voltage: +28V dc Altitude Accuracy: +2 feet or +-2% (whichever is greater)
Part Number Radio Altitude Indicator Description:
622-4160-001 Gray frame, 5V lighting, no DH annunciator, linear display dimming
622-4160-002 Gray frame, 28V lighting, no DH annunciator, linear display dimming
622-4160-003 Black frame, 5V lighting, no DH annunciator, linear display dimming
622-4160-004 Black frame, 28V lighting, no DH annunciator, linear display dimming
622-4160-005 Gray frame, 5V lighting, DH annunciator, linear display dimming
622-4160-006 Gray frame, 28V lighting, DH annunciator, linear display dimming
622-4160-007 Black frame, 5V lighting, DH annunciator, linear display dimming
622-4160-008 Black frame, 28V lighting, DH annunciator, linear display dimming
622-4160-011 Gray frame, 5V lighting, no DH annunciator, non-linear display dimming
622-4160-012 Gray frame, 28V lighting, no DH annunciator, non-linear display dimming
622-4160-013 Black frame, 5V lighting, no DH annunciator, non-linear display dimming
622-4160-014 Black frame, 28V lighting, no DH annunciator, non-linear display dimming
622-4160-015 Gray frame, 5V lighting, DH annunciator, non-linear display dimming
622-4160-016 Gray frame, 28V lighting, DH annunciator, non-linear display dimming
622-4160-017 Black frame, 5V lighting, DH annunciator, non-linear display dimming
622-4160-018 Black frame, 28V lighting, DH annunciator, non-linear display dimming


PLEASE NOTE: THE ABOVE LISTED PART NUMBERS REFLECT THE DIFFERENT UNITS ORIGINALLY AVAILABLE BY THE MANUFACTURER AND DO NOT NECESSARILY INDICATE OR REFLECT THE CURRENT AVAILBILITY OF THESE DIFFERENT UNITS BY SOUTHEAST AEROSPACE OR THE AFTERMARKET

 

622-4160-005
- Radio Altimeter Indicator
Price Condition Status
$5,500.00 OH OUTRIGHT REQUEST
$2,500.00 OH EXCHANGE REQUEST
622-4160-006
- Radio Altimeter Indicator
Price Condition Status
REQUEST OH OUTRIGHT REQUEST
REQUEST OH EXCHANGE REQUEST
622-4160-007
- Radio Altimeter Indicator
Price Condition Status
REQUEST OH OUTRIGHT REQUEST
REQUEST OH EXCHANGE REQUEST
622-4160-008
- Radio Altimeter Indicator
Price Condition Status
REQUEST OH OUTRIGHT REQUEST
REQUEST OH EXCHANGE REQUEST
622-4160-015
- Radio Altimeter Indicator

NSN: 5841-01-322-8892

Price Condition Status
$2,950.00 OH OUTRIGHT REQUEST
REQUEST OH EXCHANGE REQUEST
622-4160-016
- Radio Altimeter Indicator
Price Condition Status
REQUEST OH OUTRIGHT REQUEST
$2,750.00 OH EXCHANGE REQUEST
622-4160-017
- Radio Altimeter Indicator
Price Condition Status
REQUEST OH OUTRIGHT REQUEST
622-4160-018
- Radio Altimeter Indicator

NSN: 5841-01-421-7405

Price Condition Status
REQUEST SV OUTRIGHT REQUEST
REQUEST SV EXCHANGE REQUEST

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact questions@seaerospace.com

The DRI-55 with Collins Part Number 622-4160-01X is identical to the corresponding -00X except for the display dimming circuit. +5VDC applied to P-1 (main connector) Pin 24 gives max brightness (minimum dimming) on the -1X units and max dimming (minimum brightness) on the -00X. See image below:



Note the slope of the dimming curve, thus the term linear and non-linear dimming. Many corporate aircraft have "NAV LIGHT DIMMING". When the aircraft nav lights are turned on (night time operation) the annunicators and instrument lights go to minimum lighting or maximum dimming. Depending on whether the nav light system provides a high or low would determine which unit would be used. This is an engineering decision made when the aircraft was manufactured or modified.