User's Manual

UL-801 Installation Manual
Page 503
23-20-06 15 December 2011
G. UL-801 VHF Communications
VHF datalink service coverage on the ground may be limited. Coverage may be affected by
ground obstacles and may be restricted due to poor line of sight of the VHF ground station
antenna.
(1) The VHF communications status is indicated on the UniLink COMM STATUS page.
Press COMM STATUS LSK [4L] on the UNILINK MENU 1/2 page.
(2) If VHF COMM STATUS is COMM/IDLE, a request for ATIS information can be
performed on the ground. Otherwise, if the VHF COMM STATUS is
NOCOMM/SCANNING, the aircraft should be relocated elsewhere until the status of
COMM/IDLE is obtained.
(3) To request D-ATIS, from the UNILINK MENU Page 1:
• Press the FLIGHT INFO LSK.
• Press the D-ATIS LSK.
• Press AIRPORT. Type KORD, for example, or your airport identifier.
• Press LSK [ENTER].
• Press SEND to transmit the request.
− If QUEUED is displayed above the SEND prompt, the VHF probably is not
connected to the ACARS system.
− If Sending, SENT is displayed. The request was received and acknowledged.
Your request will be shortly received by UniLink and available for viewing.
H. OOOI Sensor Test
(4) Ensure Door and Park Brake discrete inputs are connected and configured.
(1) From UNILINK MENU 2/2 page, press the MAINTENANCE LSK [4L].
(2) Press SENSOR STATUS LSK [2L].
(3) Open and close the door.
(4) Verify the DOORS status changes accordingly.
(5) Release and set parking brake.
(6) Verify the BRAKE status changes accordingly.
(7) Verify the AIR/GROUND status is ON GROUND.
NOTE: If the aircraft is on jacks, the status will be IN AIR.