Garmin GPSMAP 296 Manual

The Garmin GPSMAP 296 is a portable aviation GPS with a large, sunlight-readable color display, detailed terrain mapping, Jeppesen database compatibility, moving map display, and extensive navigation features for both VFR and IFR flight planning. It includes a built-in worldwide basemap, supports external data cards, offers terrain and obstacle alerts, and provides weather data interface capability. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Navigation & Flight Planning 8. Database Management 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Large color TFT display, internal GPS antenna, external antenna connector, data card slot, serial and power ports, dedicated aviation buttons.

FeatureDescription
DisplaySunlight-readable 256-color TFT, 480x320 pixels
GPS Receiver12 parallel channel, WAAS enabled
DatabaseJeppesen NavData compatible, worldwide basemap
Terrain MappingBuilt-in terrain database with alerting
Moving MapTrack-up or North-up orientation
Flight PlanningDirect-to, flight plan creation, nearest airport info
External InterfacesSerial port for weather/data, power input
Data Card SlotSupports Garmin data cards for additional maps/data
Audio AlertsTerrain, obstacle, and navigation alerts
Power SourceInternal battery or external 10-32V DC

Installation

Unpack and inspect contents. Choose mounting location in aircraft cockpit.

  1. Mount unit: Use included yoke or panel mount. Ensure clear view of sky for GPS reception.
  2. Connect power: Attach power cable to aircraft power (10-32V DC). Use included fuse.
  3. Connect external antenna (optional): For improved reception, attach to external antenna port.
  4. Install data card: Insert Jeppesen or Garmin map card into slot.

WARNING! Installation should be performed by qualified personnel. Ensure mounting does not obstruct aircraft controls or visibility.

First-Time Setup

Power on unit; follow initial configuration prompts.

  1. Acquire satellite signal: Place unit with clear sky view; allow several minutes for first fix.
  2. Set preferences: Configure units (nm/km, ft/m), time format, north reference.
  3. Load databases: Insert data card; unit will prompt to load aviation data.
  4. Calibrate sensors: Perform compass calibration if prompted (on ground).
  5. Set up interfaces: Configure serial port for weather or traffic data if connected.

CAUTION! Do not rely solely on GPS for navigation. Always have backup navigation methods.

Specifications

Controls and Settings

Access menus via dedicated buttons and rotary knob. Front Panel: POWER, ENTER, PAGE, MENU, rotary knob with press-to-enter.

Dedicated Keys: Direct-to, Nearest, FPL (flight plan), WPT (waypoint), NAV, COM, MSG.

Map Display: Zoom in/out, pan, change orientation (Track up/North up). Navigation: Create/edit flight plans, activate leg, suspend navigation. System: Set up units, time, display brightness, backlight timeout, interface settings. Alerts: Configure terrain, obstacle, and airspace alerts. Database: Select active database, check data card info.

Connecting Devices

External Power: 10-32V DC input. Serial: RS-232 for weather/data. Antenna: External GPS antenna connector.

  1. Turn off unit before connecting cables.
  2. Match connectors (power: red/black wires; serial: DB-9).
  3. Configure serial port in Interface settings (baud rate, protocol).
  4. For audio alerts, connect to aircraft intercom or headset.

Tip: Use Garmin-approved cables and connectors for reliable operation.

Navigation & Flight Planning

Supports VFR and IFR navigation with detailed waypoint database.

  1. Direct-to Navigation: Press Direct-to, enter identifier or choose from nearest.
  2. Create Flight Plan: Press FPL, Add Waypoint, sequence as desired.
  3. Activate Flight Plan: Select plan, press Activate; follow magenta line on map.
  4. Nearest Information: Press Nearest for airports, VORs, NDBs, intersections, etc.
  5. Waypoint Information: Press WPT to view details, edit, or create user waypoints.
  6. Vertical Navigation: Set altitude constraints for approaches (if equipped).
  7. Holding Patterns: Create and fly published holding patterns.
  8. Approaches: Select and load instrument approaches from database.

WARNING! GPS is supplemental navigation aid. Always verify information with official charts and ATC instructions.

Database Management

Jeppesen NavData: Subscription required for current aviation data. Updates via data card.

  1. Obtain update card from Jeppesen or authorized dealer.
  2. Insert card; unit will prompt to load new data.
  3. Verify database effective dates on startup screen.
  4. User Waypoints: Create and store in internal memory.
  5. Routes: Save frequently used flight plans.

Note: Database expires; using expired data for navigation is not recommended.

Care & Cleaning

Turn off and disconnect power before cleaning. Use soft, slightly damp cloth; avoid solvents.

CAUTION! Do not submerge unit. Keep connectors dry. Avoid extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device. Complies with FAA TSO-C146 for standalone GPS navigation. Copyright © Garmin Ltd. or its subsidiaries. Jeppesen data © Jeppesen Sanderson, Inc. For support, visit www.garmin.com or contact Garmin Aviation Product Support. Warranty: One-year limited warranty.

Troubleshooting

SymptomPossible CauseCorrective Action
No powerBattery/connectionsCheck external power connection; charge internal battery; verify fuse.
Poor GPS receptionObstruction/antennaEnsure clear view of sky; connect external antenna; check for interference.
Database not loadingCard/damageEnsure data card is properly inserted; try different card; check for corrosion.
Display issuesSettings/backlightAdjust contrast/brightness; check backlight setting; ensure not in sunlight washout.
Serial communication failureCable/settingsVerify cable connections; check baud rate and protocol settings in Interface menu.

Reset: Hold PAGE and POWER while powering on for master reset (erases user data).

Service: Contact Garmin Aviation Product Support; www.garmin.com/aviation

Garmin GPSMAP 296 Manual © - All Rights Reserved 2025