GPS SV NOTAM DISTRIBUTION

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GPS SV NOTAM DISTRIBUTION
Presentation GNSS 5.1 by Hank Cabler,
FAA Co-Chairman, Satellite Operational
Implementation Team (SOIT)
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Distribution of GPS Satellite NOTAMs

• GPS Satellite Outages are Sent from the GPS
  Master Control Station at Schriever AFB to the
  U.S. NOTAM Office (Herndon, VA)
• Minimum of 48 Hour Notification for Scheduled
  GPS SV Outages (1 Week Notice Generally Given)
• Unscheduled Outages Distributed Within 30 Minutes
• GPS SV Outages Distributed Domestically Under the
  KGPS Identifier and International
  GPS SV NOTAM's Distributed Under the KNMH
  Identifier
• U.S. NOTAM Office Sends Confirmation of Receipt
  of SV Outage Information Back to GPS Master
  Control Station With NOTAM Number

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Distribution of GPS Satellite NOTAM's (Cont.)

• Countries Not Receiving GPS SV NOTAM's Need to
  Submit Request for KNMH NOTAM's to U.S. NOTAM
  Office and Provide AFTN Address
• KNMH Identifier Also Used for Loran and Omega
  (Before it was Decommissioned)
  
  
• Cuba Receives KNMH NOTAM's AFTNMUHAYNYX

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Example -- GPS SV NOTAM's
(A0067/02 NOTAMN A) KNMH B)
0204040600 C) 0204041800 E)
GLOBAL POSITIONING SYSTEM PSEUDO RANDOM NOISE 02
U/S) (A0068/02 NOTAMN A) KNMH
B) 0204051545 C) 0204060345
E) GLOBAL POSITIONING SYSTEM PSEUDO RANDOM NOISE
30 U/S)
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Example -- GPS Outage NOTAM

• PAZA ANCHORAGE
• 04/036 - GPS UNRELIABLE WITHIN A 310 NM RADIUS OF
  THE BIG DELTA VORTAC (BIG, 640026N/1454303W) AT
  FL400. THIS AREA DECREASES WITH ALTITUDE TO A
  CIRCLE OF RADIUS 260 NM AT FL250 THEN TO A
  CIRCLE OF RADIUS 190 NM AT FL100 DOWN TO A
  CIRCLE OF RADIUS 155 NM AT 4,000 FT AGL 2000-2230
  DLY 23 APR 2000 UNTIL 26 APR 2230
• IFR OPERATIONS BASED ON GPS NAVIGATION SHOULD NOT
  BE PLANNED IN THE AFFECTED AREAS DURING THE
  PERIODS INDICATED. THESE OPERATIONS INCLUDE
  DOMESTIC RNAV OR LONG-RANGE NAVIGATION REQUIRING
  GPS. THESE OPERATIONS ALSO INCLUDE GPS STANDALONE
  AND OVERLAY INSTRUMENT APPROACH OPERATIONS.

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NOTAMs on the Internet

• HTTPS//WWW.NOTAMS.JCS.MIL