FAA APPROVED AIRPLANE FLIGHT MANUAL SUPPLEMENT FOR GARMIN SL40 NAV/COMM Serial No: Registration No: When the GARMIN SL40 COM radio is installed in the Liberty Aerospace XL-2, this supplement is applicable and must be inserted in the Supplements Section (Section 9) of the Liberty Aerospace XL- 2 Airplane Flight Manual. The information contained herein supplements the FAA approved Airplane Flight Manual only in those areas listed herein. For limitations, procedures, and performance information not contained in this document, consult the basic XL-2 FAA Approved Airplane Flight Manual. FAA Approved: For: Melvin D. Taylor, Manager Atlanta Aircraft Certification Office Federal Aviation Administration Date: P/N 135A-970-022 FAA Approved: 12/6/2007 Section 9 Initial Release Page 1 of 8
Garmin SL40 NAV/COMM Log of Revisions Rev. To Pages Description FAA Approval Signature and Date Section 9 FAA Approved: 12/6/2007 P/N 135A-970-022 Page 2 of 8 Initial Release
SECTION 1 - GENERAL GARMIN SL40 NAV COM The Garmin SL40 is a 760-channel VHF communication transceiver. The SL40 Com includes an 8-watt transmitter. All pilot controls and displays are presented on the SL40 front panel as indicated in Figure 1 below. OPERATION Figure 1 - SL40 front Panel Controls The SL40 is certified for communication and navigation operations by compliance with the following: FAA TSO-C37d/JTSO 2C37e for Comm transmit FAA TSO-C38d/JTSO 2C38e for Comm receive FAA TSO-C128/JTSO 2C128 for unintentional transmission (stuck mic) The SL40 complies with the FCC requirements specified: CFR 47, Part 87, Aviation Services, Subpart D, Technical requirements CFR 47, Part 15, Radio Frequency Devices, Subpart B, Unintentional radiators The SL40 software is designed and tested to RTCA/DO-178B, Level C. P/N 135A-970-022 FAA Approved: 12/6/2007 Section 9 Initial Release Page 3 of 8
COMM TRANSCEIVER CONFIGURATION SL40 Comm. connections are made to microphone and headphone interfaces through the avionics system audio panel. Transmit key signals are also passed through audio panel interfaces. Refer to the audio panel section of AFM 135A-970-005 for operational details. ANNUNCIATORS Several annunciators are used to help indicate the operating modes of your SL40. The TX (Transmit) annunciator is lighted whenever you are transmitting. If the avionics bus drops below 9VDC, the SL40 will not transmit. An LED will be lighted above the MON and RCL buttons when these functions are selected. An s will appear to the left of the Standby frequency. An m will appear to the left of the Standby Frequency when you are using the Monitor function. An I indicates the Intercom function is being used. CONTROLS POWER ON/OFF - VOLUME - SQUELCH The knob on the left side of the SL40 controls power on/off, volume, and squelch test. Rotate the knob clockwise (CW) past the detent to turn the power on. Continuing to rotate the knob to the right increases speaker and headphone amplifier volume level. Rotate the knob to the left to reduce the volume level. Pull the knob out to disable automatic squelch. The SL40 may be installed to have the on/off switch disabled and to have power controlled from the avionics panel. LARGE/SMALL KNOBS The dual concentric knobs on the right side of the SL40 are used to select frequencies, to view the features available within a function, or make changes. Details are provided in the appropriate section. BUTTONS Five backlighted buttons allow you to access the functions in your SL40. FLIP/FLOP (ARROWS) Press the Flip/Flop button to switch between the active (left most) and the standby (right most) frequency. Switching between Com frequencies is disabled while you are transmitting. Section 9 FAA Approved: 12/6/2007 P/N 135A-970-022 Page 4 of 8 Initial Release
EC (EMERGENCY CHANNEL) Press the EC button to load the Emergency Channel (121.500 MHz) as the standby frequency. The Monitor function is automatically enabled. MON (MONITOR) Press the MON button to listen to the standby frequency. When the active frequency receives a signal, the unit will switch automatically to the active frequency. RCL (RECALL) Press the RCL button to retrieve stored frequencies. MEM (MEMORY) Press the MEM button to store the displayed Standby frequency in memory. OPERATION SUMMARY The SL40 includes a number of System Function that give you more information about your communication equipment. Press and hold the MON button for about three seconds to reach the System Function. Turn the Large, outer knob to display the available functions. Adjustments are made with the Small, inner knob. Press the MON button again to exit the System Functions. Figure 2 - System Function Summary Additional operation instructions may be found in the Pilots Guide, refer to section 2. P/N 135A-970-022 FAA Approved: 12/6/2007 Section 9 Initial Release Page 5 of 8
SECTION 2 - LIMITATIONS PILOT S GUIDE The Garmin SL40 Pilot s Guide, part number and revision listed below (or later FAA approved revisions), must be immediately available to the flight crew whenever navigation is predicted on the use of the Garmin SL40. SL40 Pilot Guides Garmin P/N 190-00488-00 Garmin AT P/N 560-00954-02 System Software SL40 software versions may be viewed by placing the units in System Mode as shown in Figure 2. System Software SECTION 3 EMERGENCY PROCEDURES EMERGENCY CHANNEL SELECTION The SL40 has a dedicated emergency frequency (121.5 MHz) key on the front panel. Access the emergency frequency as follows: 1. Press the EC button to load the Emergency Channel as the standby frequency. The Monitor function is automatically enabled 2. Press the FLIP/FLOP button to make the emergency channel the active channel SECTION 4 NORMAL PROCEDURES Refer to the SL40 Pilot s Guide for a complete set of procedures. SECTION 5 - PERFORMANCE No change SECTION 6 WEIGHT AND BALANCE See current weight and balance data. Section 9 FAA Approved: 12/6/2007 P/N 135A-970-022 Page 6 of 8 Initial Release
SECTION 7 AIRPLANE AND SYSTEM DESCRIPTION See Garmin SL40 Pilot s Guide for a complete description. SECTION 8 HANDLING, SERVICE, AND MAINTENANCE The SL40 contains no user repairable items. In the event of a problem, refer to the troubleshooting chart below for possible causes and corrective actions. Problem Possible Cause Action The SL40 does not power on The unit does not transmit Mic Sensitivity varies Sidetone level is too low or too high The intercom does not function. The unit is not getting power. The TXKey input is not being pulled low Weather channel is selected The input voltage is too low Mic Levels need adjustment Wrong type of headset, or level needs adjusting Control input not connected No voice activation, or have to talk too load Table 3 Troubleshooting Guide Check power connections, breakers, main avionics switch Check the TxKey (mic key) input, pulled low for transmit Select a different frequency, the unit will not transmit on a weather channel Increase input voltage to > 9volts VDC See Mic Level Adjustment on page 13. See the Sidetone Level Adjustment on page 12 The intercom select input must be pulled to ground to turn on the intercom function Change the intercom squelch threshold using the setup function described in the user s manual P/N 135A-970-022 FAA Approved: 12/6/2007 Section 9 Initial Release Page 7 of 8
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