Describes the pilot messages, Pilot Messages | Honeywell 880

PRIMUSr 880 Digital Weather Radar System

Table 7- 3 describes the pilot messages.

Pilot MSG	Description

RADAR FAIL	The radar is currently inoperable and should not be
	relied upon. It will need to be replaced or repaired at
	the next opportunity.

RADAR CAUTION	A failure has been detected that can compromise the
	calibration accuracy of the radar. Information from the
	radar should be used only for advisory purposes such
	as ground mapping for navigation.

PICTURE UNCAL	The radar functions are ok, but receiver calibration is
	degraded. Color level calibration should be assumed
	to be incorrect.
	Have the RTA checked at the next opportunity.

TILT UNCAL	An error in the antenna position system has been
	detected. The displayed tilt angle setting could be
	incorrect. This may also cause ground spoking.
	Have the RTA checked at the next opportunity.

TURB UNCAL	A problem has been detected with the turbulence
	detection hardware. Assume turbulence display to be
	inaccurate. Nonturbulence modes should be
	functioning properly.
	Have the RTA checked at the next opportunity.

SPOKING LIKELY	A problem has been detected which may cause
	spoking to occur.
	Have the system checked at the next opportunity.

STAB UNCAL	An error in the antenna positioning system has been
	detected. Groundspoking, or excessive ground
	returns during roll maneuvers may occur. This may be
	due either to the RTA or the source of pitch and roll
	information to the RTA.

NO AUTOTILT	No altitude information is available to make the
	altitude compensated tilt calculation. Otherwise, the
	unit may be operated as normal. Have system
	(including altitude source) checked at the next
	opportunity.

SCAN SWITCH	The SCAN SWITCH located on the RTA is off,
	disabling the antenna scan. Check at the next
	opportunity.

XMIT SWITCH	The XMIT switch located on the RTA is off, disabling
	the transmitter. Check at the next opportunity.

	Pilot Messages
	Table 7- 3

In- Flight Troubleshooting	A28- 1146- 102- 00
7-8

Image 130

Honeywell 880 manual Describes the pilot messages, Pilot Messages

Contents

Page PRIMUSr 880 Digital Weather Radar System Pilot’s Guide Table of Contents Maximum Permissible Exposure Level Appendices Federal Aviation Administration FAASection Radar Facts Honeywell Product Support List of Illustrations Federal Aviation Administration FAA Advisory CircularsEnhanced GROUND--PROXIMITY Warning Radar Beam Illumination High Altitude Rain Coming From Unseen Dry Hail List of Tables Introduction A28- 1146- 102 System Configurations PRIMUSâ 880 Configurations Efis only Configuration RTA Dual Control Mode Truth TableLeft Right Controller Left Side Right Side Mode Remote Mounted Equipment Model Unit Cockpit Mounted OptionsPrimusr 880 Weather Radar Equipment List Typical PRIMUSâ 880 Weather Radar Components Operating Controls WI- 880 Weather Radar Indicator OperationTypical PRIMUSâ 880 Digital Weather Radar Display Range 3 Gmap Calibrated Gain Rainfall Rate Color In/hr Mm/hr Rainfall Rate Color Coding Fsby Forced Standby TGT Target Selected Range Minimum Target Target Range Depth NM STB Stabilization AZ Azimuth TRB TurbulenceRange SCT Scan Sector BRT Brightness or BRT/LSS Lightning Sensor System Tilt Gain WC- 880 Weather Radar Controller Configurations WC- 880 Weather Radar Controller Operation Tilt Radar SLV LSS Gain Radar EFIS/MFD PRIMUSr 880 Digital Weather Radar System Maximum Permissible Exposure Level Mpel Sect Scan Sector TRB Turbulence Detection Range SLV Slave LSS Lightning Sensor System Option WC- 884 Weather Radar Controller BRT Brightness WC- 884 Weather Radar Controller OperationTGT Target Alert RCT Rain Echo Attenuation Compensation Technique Tilt Mode Rainfall Rate Color In/hr Mm/hr PRIMUSr 880 Digital Weather Radar System Hidden Modes Forced Standby Override Pitch Offset Roll OffsetRoll Gain Pitch Gain PRIMUSr 880 Digital Weather Radar System Primusr 880 Power--Up Procedure Cont Preliminary Control SettingsStep Procedure Normal Operation PRIMUSâ 880 Power- Up Procedure Output Power is Radiated in Test ModeIndicator Test Pattern 120 Scan WX With Text Fault Enabled Efis Test Pattern Typical 120 Scan Shown WX 319 WI--880 Indicator Test Pattern With Text Fault Enabled Radar Mode WeatherStandby REV Radar Mode Ground Mapping Test Mode 4-8 blank Radar Facts Radar Operation Aircraft Heading PRIMUSr 880 Digital Weather Radar System Sea Returns Tilt Management Radar Beam Illumination High Altitude Inch Radiator Radar Beam Illumination Low Altitude Inch Radiator PRIMUSr 880 Digital Weather Radar System Range Scale Line Tilt Limited Ideal Tilt Angle Earth’s Curvature Convective Thunderstorms Unaltered Tilt Proper Tilt Technique Tilt Management With Heading Changes Fast Developing Thunderstorm Low Altitude Tilt Management Antenna Size and Impact on Tilt Management Rules of Thumb Altitude Compensated Tilt ACT Manual Tilt at Low Altitudes Accelerative Error Dynamic ErrorStabilization Pitch and Roll Trim Adjustments Pitch and Roll Trim Adjustments Criteria Stabilization Precheck Stabilization In Straight and Level Flight Check ProcedureLevel Flight Stabilization Check Symmetrical Ground Returns Ground Return Indicating Misalignment Upper Right Ground Return Indicating Misalignment Upper Left Stabilization in Turns Check ProcedureRoll Stabilization Check Roll Stabilization Inoperative In- flight Roll Offset Adjustment Procedure 23. The radar unit is in the roll offset Push the Stab STB button to go to the next menu pitch offset Roll Offset Adjustment Display Final Pitch Offset Adjustment Pitch Offset Adjustment Procedure Roll Gain Adjustment Roll Gain Adjustment Pitch Gain Adjustment Pitch Gain Adjustment Interpreting Weather Radar Images Weather Radar Images PRIMUSr 880 Digital Weather Radar System Radar and Visual Cloud Mass Squall Line Weather Display Calibration Display Levels Related to VIP Levels Typical Variable Gain Control LOW Variable Gain Settings can Eliminate Hazardous TargetsRain Echo Attenuation Compensation Technique React PRIMUSr 880 Digital Weather Radar System React With React SelectedReact on and OFF Indications Turbulence Probability ShadowingDo not FLY Into the Shadow Behind the Cell Probability of Turbulence Presence A Weather Target Turbulence Detection Theory Areas of Turbulence can not Always be Detected by the Radar Total Return Vector No Turbulence Turbulent Turbulence Detection OperationWeather Display With Turbulence PRIMUSâ 880 Digital Weather Radar can only Detect Hail Size Probability Turbulence Levels From Airman’s Information Manual Spotting Hail Hail Size Probability Rain Coming From Unseen Dry Hail Familiar Hailstorm Patterns Overshooting a Storm Short- and Long- Blind Alley Azimuth Resolution Azimuth Resolution in Weather Modes Radome Weather Avoidance Weather Display DRY Hail can be Prevalent AT Higher Alti Do not Leave the Radar in Variable GAIN. SIGNificant Weather MAY not be Displayed Tudes WITHIN, NEAR, or Above Storm Cells Severe Weather Avoidance Procedures 10 3. Interaction With Other Storms. a thunderstorm that is Step Procedure Fall MAY be More Severe than Depicted on Configurations of Individual Echoes Northern HemisphereStorms Situated Behind Intervening Rain Display Typical Hook Pattern Avoid V- Notch by 20 Miles Notch Echo, Pendant Shape Avoid Pendant by 20 Miles Classic Pendant Shape Rain Gradients Avoid Steep Rain Gradients by 20 MilesAvoid ALL Crescent Shaped Echoes by 20 Miles Line Configurations Crescent Shape Avoid Line Echo Wave Patterns Lewp by 20 Miles Line Echo Wave Pattern Lewp Avoid BOW- Shaped Line of Echoes by 20 Miles Bow- Shaped Line of Thunderstorms Turbulence Versus Distance from Storm Core Additional HazardsTurbulence Versus Distance from Storm Edge Ground Mapping Ground Mapping Display Tilt Setting for Maximal Ground Target Display Inch Radiator Range Scale Maximum Permissible Exposure Level Mpel Mpel Boundary In- Flight Troubleshooting Test Mode With Text Faults Enabled Fault Data Fields Field No Description 315 Fault Code and Text Fault Relationships Text Faults Cont IO Fpga REG Text Faults Describes the pilot messages Pilot Messages Honeywell Product Support Honeywell Aerospace Online Technical Publications Web Site Customer SupportCustomer Response Center CRC Abbreviations Abbreviation Equivalent FLTPLN, FP RCT, React Appendix a Federal Aviation Administration FAA Advisory CircularsCancellation Purpose General Background PrecautionsBody Damage Combustible Materials Hazards Subject ThunderstormsGeneral Squall Lines Tornadoes Turbulence Schematic Cross Section of a Thunderstorm Icing LOW Ceiling and Visibility HailEffect on Altimeters Lightning Weather Radar DO’S and DON’TS of Thunderstorm Flying PRIMUSr 880 Digital Weather Radar System Turbulence and Echo Intensity on NWS Radar WSR Relationship Between Turbulence and ReflectivityRelationship Between Turbulence and Altitude Turbulence in Relation to Distance from Storm Core Turbulence Above Storm Tops Turbulence in Relation to Distance from the Storm EdgeTurbulence below Cloud Base Maximum Storm Tops Hail in Thunderstorms Extrapolation to Different Climbs USE of Airborne Radar System Operation Enhanced Ground-Proximity Warning System EgpwsAppendix B Egpws Controls Push Button Controls Annunciators Related Egpws System Operation Egpws Operation Egpws Display Figure B--1 Egpws Test Index Index TGT target, 3-6 tilt TRB turbulence Radar facts cont rain echo attenuation Index--5 BRT brightness or BRT/LSS lightning sensor system