INSTALLATION MANUAL KRA 405B RADAR ALTIMETER MANUAL NUMBER 006-10536-0010 REVISION 10 OCTOBER, 2005
WARNING The enclosed technical data is eligible for export under License Designation NLR and is to be used solely by the individual/organization to whom it is addressed. Diversion contrary to U.S. law is prohibited. COPYRIGHT NOTICE ©1997, 1999, 2001, 2003, 2005 Honeywell International Inc.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL REVISION HIGHLIGHTS 006-10536-0010 Rev. 10 Oct/2005 This is a full reprint of the KRA 405B Installation Manual. Discard the previous manual revision in its entirety. Specific changes to content are denoted by change bars. Revision highlight(s) include the updating the environmental qualification forms to revision AF. 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL THIS PAGE IS RESERVED 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL TABLE OF CONTENTS ITEM PAGE SECTION I GENERAL INFORMATION 1.0 INTRODUCTION ............................................................... 1-1 1.1 DESCRIPTION OF EQUIPMENT ................................................... 1-2 1.2 ACRONYMS AND ABBREVIATIONS ................................................. 1-3 1.3 TECHNICAL CHARACTERISTICS .................................................. 1-4 A. KRA 405B RADAR ALTIMETER SYSTEM ......................
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL ITEM 2.4 PAGE CONFIGURABLE PARAMETERS .................................................... 2-2 A. ALTITUDE TRIP POINTS ....................................................... 2-2 B. ZERO FEET OFFSET ........................................................... 2-4 C. KPA 900 CONFIGURATION MODULE PROGRAMMER KIT ................................ 2-6 D. DH AUDIO OUTPUT ............................................................ 2-6 2.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL ITEM PAGE D. APPROACH ................................................................... 3-3 E. PUSH-TO-TEST MODE .......................................................... 3-3 3.3 SELF-TEST DIAGNOSTICS ...................................................... 3-4 TSO APPENDIX 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL THIS PAGE IS RESERVED 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL ITEM FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE FIGURE PAGE 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 3-1 3-2 KRA 405B DEFAULT TRIP POINT SETTINGS ............................. 2-3 KRA 405B TRIP POINT EDITING WINDOW ............................... 2-3 KRA 405B ZERO POINT OFFSET .......................................
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL THIS PAGE IS RESERVED 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL ITEM TABLE 1-1 TABLE 1-2 TABLE 2-1 PAGE KNI 415/416 INDICATOR AVAILABILITY .............................. 1-10 CABLE INSTALLATIONS ............................................. 1-11 TSO CERTIFIED ANTENNAS ........................................... 2-9 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL THIS PAGE IS RESERVED 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL SECTION I GENERAL INFORMATION 1.0 INTRODUCTION This manual contains information relative to the physical, mechanical, and electrical characteristics of the BENDIX/KING KRA 405B. Installation and operating procedures are also included. Information relative to the maintenance and procurement of replacement parts may be found in the KRA 405B Maintenance Manual Part Number 006-15536-00XX (XX = Highest Revision).
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL Some part numbers may not be currently available. Consult the current Honeywell catalog or contact a Honeywell representative for equipment availability. The KRA 405B System also may consist of previously TSO certified components from the following list. However the use of any configurations other than the preferred configuration will result in reduced functionality of the system.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL The KRA 405B Radar Altimeter System consists of the KRA 405B Receiver/ Transmitter, the KNI 415 or KNI 416 Indicator, and two (2) KA 54A Antennas. The entire system is solid state except for a servo mechanism and relay in the Indicator. The KRA 405B Radar Altimeter replaces the KRA 405 altimeter. The KRA 405B is electrically compatible with the same indicators and antennas as the KRA 405. NOTE: 1.2 The connectors for KRA 405 and KRA 405B are not compatible.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL 1.3 TECHNICAL CHARACTERISTICS A. KRA 405B RADAR ALTIMETER SYSTEM SYSTEM ALTITUDE ACCURACY: ± 5 ft (1.5 m) or ± 5% (whichever is greater) at 0 to 500 feet and ± 7% at 500 to 2,500 feet SYSTEM ANTENNA CABLES (2 Required): Length: Cable Type: SYSTEM POWER REQUIREMENTS: SYSTEM WEIGHT (less cables): B. See 1.5 ACCESSORIES REQUIRED BUT NOT SUPPLIED See TABLE 1-2 CABLE INSTALLATIONS 27.5 Vdc ± 20% at 2 Amperes maximum 5.1 lbs (2.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL C. KRA 405B RECEIVER/TRANSMITTER (cont.) ALTITUDE OUTPUT: Slope: Precision Equipment: -20 to 2,500 ft (-6.1 to 762.0 m) -10 mV/ft (32.81 mV/m); Zero ft = 0.000 volts Auxiliary Out #1: -20 to 500 feet (-6.1 to 152.4 m) +20 mV/ft (+65.62 mV/m); 500 to 2,500 feet (152.4 to 762 m) +3 mV/ft (9.84 mV/m); Zero ft = +0.400 volts Auxiliary Out #2: (-0101, -2001/-4001) -20 to 2,500 feet (-6.1 to 762.0 m) -4 mV/ft (13.12 mV/m); Zero feet = 0.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL C. KRA 405B RECEIVER/TRANSMITTER (cont.) Load Capability: 4 loads, @ 2 kΩ per load Off Scale Voltage: Precision Equipment Output: -28.0 ± 1.5 Vdc Auxiliary Out #1: +17.3 ± 0.5 Vdc Auxiliary Out #2: -11.2 ± 0.6 Vdc (-0101) Auxiliary Out #2: 27.5 ± 1.5 Vdc (-0202) Time Constant: Precision Equipment Output: 0.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL D. KNI 415/416 INDICATOR TSO COMPLIANCE: C87/ETSO-2C87 DO-138 Env. Cat GAPAAAXXXXXX PHYSICAL DIMENSIONS: See FIGURE 2-5 KNI 415/416 INSTALLATION DRAWING Length: Width: Height: WEIGHT: See FIGURE 2-5 KNI 415/416 INSTALLATION DRAWING ALTITUDE: 55,000 feet (16,764 m) OPERATIONAL TEMPERATURE RANGE: -20° C to +70° C POWER REQUIREMENTS: Primary Power: 27.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL E. KA 54A ANTENNA TSO COMPLIANCE: C87/ETSO-2C87 DO-160A Env. Cat. D2AJXWFD PHYSICAL CHARACTERISTICS: See FIGURE 2-11 KA 54A ANTENNA Length: Width: Height: WEIGHT: (2 required) See FIGURE 2-11 KA 54A ANTENNA ALTITUDE: 60,000 ft (18,281 m) OPERATIONAL TEMPERATURE RANGE: -54° C TO +85° C BEAMWIDTH: E-Plane: 45° min. H-Plane: 40° min.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL F. KA 54 ANTENNA (RETROFIT ONLY) TSO COMPLIANCE: C87/ETSO-2C87 DO-138 Env. Cat.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL B.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL E.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL CONNECTOR, STRAIGHT TNC CONNECTOR, RIGHT ANGLE TNC Cable Cable Honeywell Vendor Honeywell Vendor Type Part No. Part No. Part No. Part No. Part No.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL The CM 2000 allows the KRA 405B to operate with custom altitude trip points (rather than the factory preset values) and allows for an offset to the zero foot readout. Refer to section 2.4 CONFIGURABLE PARAMETERS to determine if the module is required for a particular installation. B. KPA 900 CONFIGURATION MODULE PROGRAMMER KIT The KPA 900 Configuration Module Programmer Kit is required to program the CM 2000 Configuration Module.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL 1.7 LICENSE REQUIREMENTS The transmitter, as installed in the aircraft, requires an Aircraft Radio Station License. This license is obtained by filing FCC Form 404. The KRA 405B may be operated for up to 30 days without a station license, after filing the FCC Form 404 and while awaiting the receipt of the station license, if a copy of the FCC Form 404 is kept in the aircraft.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL SECTION II INSTALLATION 2.1 GENERAL INFORMATION This section contains general suggestions and information to consider before installation of the KRA 405B. Close adherence to these suggestions will assure optimum performance from the equipment. The conditions and tests required for the TSO and MOPS approval of this article are minimum performance standards.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL The installing agency will supply and fabricate all external cables. The connectors required for RG 393 (the preferred cable) are supplied by Honeywell. Installation kits are also available. Consult 1.4 UNITS AND ACCESSORIES SUPPLIED (KRA 405B SYSTEM COMPONENTS) as required.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL Use the cursor keys or the mouse to move the highlight bar to the parameter that is to be adjusted. FIGURE 2-1 KRA 405B DEFAULT TRIP POINT SETTINGS Press the key to display the Editing Window for the selected Trip Point. The window should be similar to the following figure. FIGURE 2-2 KRA 405B TRIP POINT EDITING WINDOW Enter an integer value between 0 and 2500 at the blinking cursor. Press the to accept the value. 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL The Editing window will be removed and the Memory Definitions window will again be displayed, to allow further changes, and the Main screen will display a message describing the changed parameter. After completing the all changes to the settings, refer to the KPA 900 Operators Guide P/N 006-05392-00XX for instructions to complete the programming of the Configuration Module. Honeywell recommends that the programmed module be verified before installation.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL The KRA 405B has provisions to allow some flexibility in the altitude at which zero feet is displayed. This deviation would be useful for installations where a zero foot reading is desired before the landing gear compresses or when the antennas are mounted significantly forward of the main gear. This capability is provided by adjusting the "Zero Foot Offset" parameter in the configuration module.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL NOTE: C. For CM 2000 Configuration Modules used in ART 2000 Weather Radar and KRA 405B Radar Altimeter Installations and CM 2000 configuration modules that have never been programmed or may have a default program for a different unit, a "write to" initialization must be performed before writing the parameters required for the installation into the CM 2000 configuration module.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL The selected mounting location will vary with each particular type of aircraft. The unit should be installed in a convenient location for accessibility for inspection and maintenance. The area should be free from excessive vibration, heat, and noise generating sources. The equipment and connecting cables must not interfere with aircraft controls and other equipment. (1) Refer to FIGURE 2-6 KRA 405B INSTALLATION DRAWING for the KRA 405B R/T mounting dimensions.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL c. (2) For direct mounted units perform the following steps: 1. Mark, punch, then drill mounting holes, being careful not to damage adjacent equipment or cables. 2. Using four (4) #6-32 screws, secure the unit in the position selected. Dual Installation The KRA 405B R/T fulfills all altitude accuracy specifications when in dual installation mode. Mutual interaction is not operationally significant.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL C. (3) Make certain that clearance is available between units so that normal vibration does not cause the unit to strike adjacent equipment cases. (4) Allow clearance behind the unit for installation of the cables and connectors. (5) If an instrument hole that meets the installation requirements is not available, cut a 3 inch ATI hole per FIGURE 2-5 KNI 415/416 INSTALLATION DRAWING. The unit may be mounted in front of or behind the panel.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL The UB Corporation, Sensor Systems, Dorne and Margolin (EDO) and Comant Industries antennas can be purchased directly from the respective manufacturers at the following addresses: D. (1) UB Corporation 9829 Wilsky Blvd. Tampa, FL 33615 Telephone: 813-884-1463 (2) Comant Industries, Inc. 12920 Park St. Santa Fe Springs, CA 90670 Telephone: 562-946-6694 (3) Sensor Systems, Inc. 8929 Fullbright Ave.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL • Antennas should be pointing straight down within plus or minus 6° when the aircraft is in a level flight attitude. Antennas mounted more than 6° off the vertical will exhibit erratic operation on the ground. See FIGURE 2-7 DUAL RADAR ALTIMETER SYSTEM TYPICAL ANTENNA INSTALLATIONS for examples of this type of installation. • Antennas may be mounted in-line or side-by-side. The in-line mounting is the preferred choice of the two.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL • Antennas must not be located in areas where excess water can accumulate. Water between the antenna flange and aircraft skin will cause loss of system sensitivity and may cause peeking. • The connectors on the KA 54 antennas should be mounted perpendicular to a line drawn through the receive and transmit antennas for a given unit. The antennas are designed for minimum coupling when mounted as above.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL • Avoid the use of right angle or bulkhead coax connectors. Voltage standing wave ratios (VSWR) are greater on these types of connectors and therefore can cause problems. If bulkhead connectors must be used, then connectors such as Kings Electronics Inc. P/N KA 19-102 or equivalent must be used. If right angle connectors must be used, they must be specified for operation at 4.3 GHz and extreme care should be exercised in their assembly.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL G. WIRING HARNESS FIGURE 2-14 CONNECTOR PIN LOCATIONS shows the KRA 405B R/T mating connector pin connections and the KNI 415/416 mating connector pin locations. Refer to FIGURE 2-17 KRA 405B RADAR ALTIMETER SYSTEM INTERCONNECT as required. During preparation of the wiring harness, the following precautions should be acknowledged: H. • Bond and shield all parts of the aircraft electrical system such as generators and ignition systems.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL To program the configuration module, a KPA 900 with software 22200366-0002 or greater is needed (See section 1.6. B. KPA 900 CONFIGURATION MODULE PROGRAMMER KIT). Follow the instructions in the KPA 900 operator’s manual (006-0539200XX) which is included in the KPA 900 Configuration Module Programmer Kit to perform the programming. The KRA 405B uses a configuration module type CM 2000 P/N 071-00093-0100. 2.6 POST INSTALLATION A.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-4 KRA 405B POST INSTALLATION CALIBRATION SWITCH Verify proper on ground performance after the calibration is complete. For systems without a zero feet offset programmed into the configuration module, this will be an indication of zero feet plus or minus the system tolerance of two or three feet.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL 2. B. A calibration in an excessively noisy environment will not be accepted by the KRA 405B. A post calibration altitude of thirty to one hundred feet indicates a failed calibration. If this condition occurs, the calibration must be completed in a different location. GENERAL In most cases altimeter installations that closely follow the suggestions of this manual will need no special equipment to check the integrity of the system. The steps of Paragraph 2.6.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL It also ensures the absence of an RF leakage path allowing the 4.3 GHz transmitter output to bleed into the system’s receiver, thus bypassing the normal antenna-to-ground-to-antenna path while flying above 2,500 feet AGL. The following procedure duplicates a flight altitude greater than 2,500 feet AGL in order to find these RF leakage paths.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL f. Place a one (1) foot square or larger piece of the microwave absorber over each KRA 405B Antenna. The KRA 405B should unlock and the Indicator pointer should drive clockwise behind the mask. NOTE: It may be necessary to remove the aircraft from the hanger, away from other aircraft and/or other sources of reflection in order to achieve an unlock condition (pointer behind mask) with the microwave absorber.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL An antenna fault will be detected when its cable is terminated into a 50 ohm load and the indicator needle will stow behind the mask. Re-bond the antenna if the pointer is now stowed. If the indicator pointer still does not stow, this indicates an RF cable or connector problem. Remove both cables at the antenna and terminate one of them with a 50 ohm RF load. Remove the other cable at the R/T end and terminate with a 50 ohm RF load.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL (3) Test Procedure a. Connect the test equipment as shown in FIGURE 2-15 KRA 405B TEST EQUIPMENT SETUP, replacing the antennas in the installation. b. Adjust the variable attenuator to 0 dBm (this setting yields approximately 65 dBm loop loss). The KNI 415/ 416 should indicate 900 to 1100 feet. c. Slowly increase the variable attenuator until the KNI 415/416 pointer goes clockwise behind the mask.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL (4) Simulated Altitude Test Procedure The Simulated Altitude Test Procedure is to be used by the installer to test associated systems that interface with the KRA 405B. In the Simulated Altitude Test Mode, all outputs of the KRA 405B operate normally, except that they are controlled by a test input voltage rather than altitude. This test voltage controls all analog and digital outputs, and all three trip points. 2.7 a.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL (2) Loosen fluted retaining screw clamp, located on the front of the mounting rack, remove triangular keeper from the front lip of the unit, and slide unit out of the rack. 2. Remove (4) #6-32 screws, securing unit to mounts, and remove. Re-installation a. B. 1. For Rack Mount, follow procedure outlined in step 1, For Shock Mount and Direct Mount, follow procedure outlined in step 2, 1. Slide the unit into the rack.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL b. C. Re-attach mating cable to Cannon connector (P4151/ P4161) on the back of the unit. ANTENNAS (Refer to FIGURE 2-8 KA 54 ANTENNA OUTLINE AND MOUNTING DRAWING through FIGURE 2-12 HONEYWELL GT 7003586 (SENSOR SYSTEMS TYPE S672002-4 ANTENNA)) Refer to section 2.5. E. IMPLEMENTING THE ANTENNA INSTALLATION for additional information and suggestions relating to installation of antennas. (1) (2) 2.8 Removal a.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-5 KNI 415/416 INSTALLATION DRAWING (Dwg No 155-05160-0000, R-1) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-6 KRA 405B INSTALLATION DRAWING (Dwg No 155-06030-0000 R-0) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-7 DUAL RADAR ALTIMETER SYSTEM TYPICAL ANTENNA INSTALLATIONS (Page 1 of 2) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-7 DUAL RADAR ALTIMETER SYSTEM TYPICAL ANTENNA INSTALLATIONS (Page 2 of 2) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-8 KA 54 ANTENNA OUTLINE AND MOUNTING DRAWING DORNE MARGOLIN INC. TYPE DMPN 3-3/A, (Dwg No 155-05159-0000, R-1) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-9 UBC TYPE AD 43013-1 AND COMANT TYPE 01-34-04531 ANTENNA OUTLINE AND MOUNTING DRAWING, (Dwg No 155-05166-0000, R-0) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-10 DORNE MARGOLIN TYPE DMPN 3-4/A ANTENNA OUTLINE AND MOUNTING DIAGRAM, (Dwg No 155-05167-0000, R-2) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-11 KA 54A ANTENNA (SENSOR SYSTEMS TYPE S67-2002 & DORNE AND MARGOLIN TYPE DMPN 19-2-1) OUTLINE AND MOUNTING DRAWING, (P/N 071-01501-0000, R-AE) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-12 HONEYWELL GT 7003586 (SENSOR SYSTEMS TYPE S67-2002-4 ANTENNA) OUTLINE AND MOUNTING DRAWING 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL NOTE: Proper operation of a Radar Altimeter System depends upon the VSWR of the antenna cable. Therefore, extreme care must be exercised in assembling the TNC connector to the RG 393/U cable. Strict adherence to the above instructions will ensure a good VSWR of the antenna cables. FIGURE 2-13 TNC COAX/CONNECTOR ASSEMBLY (RG 393/U) (P/N 030-00108-0004) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL KRA 405B MATING CONNECTOR (P4051) P/N 030-02077-0000 KRA 415/416 MATING CONNECTOR (P4151/P4161) P/N 030-02210-0001 FIGURE 2-14 CONNECTOR PIN LOCATIONS 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-15 KRA 405B TEST EQUIPMENT SETUP 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-16 EXTERNAL SONALERT (W/15 SECOND DH AUDIO FADER) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-17 KRA 405B RADAR ALTIMETER SYSTEM INTERCONNECT (Dwg No 155-01645-0000, R-AD) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 2-18 CM 2000 CONFIGURATION MODULE MOUNTING DRAWING (Dwg No 155-06016-0000, R-2) 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL SECTION III OPERATION 3.1 GENERAL The KNI 415 and KNI 416 Radar Altimeter Indicators are shown in FIGURE 31 KNI 415 CONTROL FUNCTIONS and FIGURE 3-2 KNI 416 CONTROL FUNCTIONS and are discussed below. • Altitude Scale: The KNI 415 scale gives accurate altitude indications from -20 to +2000 feet. From -20 to 500 feet each mark on the scale represents 10 feet. From 500 to 2000 feet, each mark represents 100 feet.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL • DH Lamp: This lamp lights when the Decision Height is reached. The lamp can be turned off by pushing the lamp in. The lamp can be turned on again, when below the decision height, by depressing the lamp a second time. Once turned off, the DH lamp will be automatically armed upon climb out as the aircraft passes through the DH altitude. Pressing the self-test button will also turn on the DH lamp if the DH bug is set above 50 feet. 3.2 NORMAL OPERATION A. B.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL C. IN FLIGHT OPERATION At normal cruise altitudes above 2000 feet, the indicator pointer is behind the mask and the warning flag is hidden from view above 2,500 feet. A Flight Control System (FCS) warn is a failure warning signal to systems requiring accurate above ground level (AGL) altitude information.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL 3.3 SELF-TEST DIAGNOSTICS SYMPTOM ACTION REQUIRED Altimeter does not indicate 50 ± 5 feet. The Radar Altimeter System is inoperative. Repair is required. Flag does not come into view, but indicated altitude is correct. Indicator Failure. Radar Altimeter System failures may not be indicated by a flag. Repair is required. DH Lamp fails to light. Indicator Failure. The decision height will not be annunciated. Repair is required.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 3-1 KNI 415 CONTROL FUNCTIONS 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL FIGURE 3-2 KNI 416 CONTROL FUNCTIONS 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL TSO APPENDIX ENVIRONMENTAL QUALIFICATION FORMS 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL THIS PAGE IS RESERVED 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL 006-10536-0010 Rev.
N KRA 405B RADAR ALTIMETER INSTALLATION MANUAL THIS PAGE IS RESERVED 006-10536-0010 Rev.
