COMDTINST 16550.5
of all current NOTAMs for their area of responsibility. Additionally, they shall ensure
that the provisions of this instruction are complied with.
b.
Loran-C Coordinators Of Chain Operations (COCOs) have the responsibility to
issue and cancel all Loran-C NOTAMs for scheduled outages of 2 hours or less and
for all unscheduled outages which meet the requirements of subparagraph 6a.
Additionally, COCOs shall keep the appropriate Regional Manager informed of all
active NOTAMs.
c.
OMEGA Navigation System Center (ONSCEN) has the responsibility to issue all
NOTAMs concerning OMEGA stations. ONSCEN shall also keep track of all
outstanding OMEGA NOTAMs and ensure that each is cancelled at the appropriate
time.
6.
Procedures.
a.
Loran-C NOTAMs. NOTAMs and NOTAM cancellations for the Loran-C system
will be issued for the following occurrences:
(1)
any unscheduled, continuing unusable period expected to extend longer than 30
minutes whether in an Out-Of-Tolerance (OOT) condition or off-air,
(2)
end of any unscheduled unusable period where an open-ended NOTAM has
been issued,
(3)
any scheduled unusable period lasting over one hour,
(4)
Automatic Blink System (ABS) occurrences such as:
(a)
disabling/enabling the ABS for maintenance or repair (note:
disabling/enabling master ABS effects the entire chain),
(b)
taking any action to stop blink caused by a malfunctioning ABS unit
(acknowledgment receipt must be received prior to stopping blink),
(c)
NOTE: The ABS shall not be de-energized nor taken off-line for
scheduled maintenance without first submitting a NOTAM-D fax and
receiving the return receipt from the NOTAM Office. In the event of a
failure in the ABS, the Loran-C station/chain shall be blinked (regardless
of availability of the actual signal) until the FAA has confirmed receipt of
the NOTAM. The acknowledgment provided by the sender's own fax
machine is sufficient proof that the NOTAM request reached the FAA.
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