BendixKing KHF 990 - Manual (Page 118)

All other traffic which does not reasonably fall into the Acceptable
Traffic category.
NOTE: The HF LDOCFs operate exclusively in the upper sideband
(USB) mode. Make sure the KHF 950 is operating in the USB mode
when utilizing these services.
The LDOCFs are located at New York, Cedar Rapids, Miami, San
Francisco, Honolulu, and Houston. A map depicting the areas served
and frequencies of each facility follows to assist flight crews and
ground personnel in contacting the appropriate facility. Generally, the
higher frequencies are used during the daylight hours and the lower
frequencies during hours of darkness. The frequencies in this service
may be used from any location, the only limiting factor being the actu-
al propagation of the radio signals.
ARINC OPERATING PROCEDURES
AUTHORIZED CONNECTIONS
A list of personnel authorized by the user to originate and receive
calls is located at each ARINC LDOCF and at ARINC headquarters.
AIRCRAFT-TO-GROUND CALLS
Flight crews wishing to place calls to their operational offices using
this service will call one of the LDOCFs previously listed. The time of
day and distance from the station will determine the most appropriate
frequency to be used.
NOTE: Aircraft transiting the U.S. mainland should use another
means for contacting their company offices such as the ARINC VHF
facilities or UHF airborne telephone. The LDOCF is intended for inter-
national communications only; however, this does not preclude its
use during an emergency or loss of the aircraft’s VHF equipment.
The ARINC ground operator receiving the request for a phone patch
will verify that the call is being placed to an authorized office. The
operator will refuse to complete the phone patch if he determines the
crew is requesting a call to an office not authorized by the crew’s
company. However, if the crew declares that the call is of an emer-
gency nature, the ground operator may complete it for them.
If the operator determines that the call is to an authorized office, he
will then determine if the signal quality is high enough for a successful
phone patch. If the signal quality is not adequate, the operator will
advise the flight crew of this and they may both try another frequency
Services
6-2 KHF 950/990 Pilots Guide
Rev. 0
Dec/96