Section 3. NAVAID NOTAMs
NOTAMs concerning NAVAIDs for which your facility has monitor
NOTAMs will be prefaced with the keyword NAV following the Location
!DCA LDN NAV VOR UNMONITORED
The person in charge
of the watch shall report any known or reported malfunctions of a NAVAID to
technical operations or appropriate personnel and coordinate issuance of a
facility shutdowns or other unanticipated outages that are expected to last
more than 30 days shall be promptly reported to NFDC by administrative
message or FAX. When possible, the expected duration of the shutdown is to
be included in the message.
Except for emergency shutdowns, technical operations personnel are expected
to give at least 1-hour notice to the FSS.
maintenance shutdown of NAVAIDs that are a part of the NAS shall be handled
maintenance shutdown. When possible, approval should be obtained
sufficiently in advance of the proposed shutdown time to allow dissemination
of a NOTAM at least 5 hours before a shutdown will occur. A routine
maintenance shutdown request shall not be denied because of an inability to
issue a NOTAM 5 hours in advance of the shutdown.
shutdown. When possible, at least 1-hour advance notice should be obtained
so that appropriate dissemination may be made prior to shutdown.
maintenance shutdown. Notify the NFDC sufficiently in advance to permit
publication of the information prior to the shutdown date. When this is not
possible, disseminate a NOTAM not more than 3 days before the shutdown.
a. All VOR,
VORTAC, and ILS equipment in the NAS have automatic monitoring and shutdown
features in the event of malfunction. Unmonitored, as used in this order,
means that the personnel responsible for monitoring the facility have lost
aural and visual monitoring capabilities and cannot observe the status of
the facility. It does not refer to the automatic monitoring feature.
b. When a
navigational aid's operational status cannot be monitored at the controlling
or monitoring facility, but all indications or reports are the
facility is operating normally, issue a NOTAM placing the aid in an
c. When issuing
a NOTAM describing a facility as unmonitored, do not use the category of
monitor, only the contraction UNMON.
DCA LDN NAV VOR UNMONITORED
d. If the
NAVAID is reported as being out of service, the unmonitored NOTAM must be
5-3-6. CATEGORY 2 AND
3 INSTRUMENT LANDING SYSTEM STATUS
a. Category 2
and/or 3 approaches are automatically cancelled or not authorized when a
NOTAM has been issued for any fundamental component needed for the
approaches. Those components are the glide slope (GP), localizer (LLZ),
approach lighting system (ALS), and the runway edge lights (RWY LGTS).
b. Category 2
and/or 3 approaches may not be authorized due to the failure of additional
equipment, such as the outer marker (OM), inner marker (IM), locator at the
outer marker (LO), distance measuring equipment (DME), sequence flashing
lights/runway alignment indicator lights (SFL/RAIL), touchdown zone lights (TDZL),
runway centerline lights (RCLL), RVR touchdown (RVRT), RVR midpoint (RVRM),
and RVR rollout (RVRR). The determination of impact to higher category ILS
operations will be made by the Tech Ops Control Center specialist in
accordance with the guidance contained in FAA Order 6750.24, and a separate
NOTAM request for loss of ILS category will be made if the equipment
failures warrant this action.
ATL ATL NAV ILS RWY 8L CAT 2 NA
!ATL ATL NAV ILS RWY 8L CAT 3 NA
!ATL ATL NAV ILS RWY 8L CAT 2/3 NA WEF 11112516001111251900
5-3-7. NOTAM (D)
a. The flight
service specialist is responsible for formatting the information correctly.
The examples used in this order are representative of the format discussed
in this paragraph.
b. For guidance
on NOTAM D composition, see paragraph
4-2-1, NOTAM Composition.
commissioning, decommissioning, outages, or unmonitored status of NAVAIDs
(more than 1 hour or 30 minutes for radar) that are part of the NAS as
NOTAMs. NAVAID outage NOTAMs will remain active until the NAVAID is returned
to service or decommissioned.
to NAVAIDs are normally published by segment; for example, 020055 degree
radials. Do not carry more than one NOTAM describing the restrictions of a
NAVAID. To correct a given segment, issue a completely new NOTAM for that
segment. Add “PLUS SEE (publication)” when other restrictions to the NAVAID
are published. The absence of this statement from the NOTAM indicates that
all other restrictions have been canceled.
!SAV SAV NAV VOR UNUSBL 010-030 BYD 35 BLW 10000
!PNC PER NAV VOR UNUSBL 045-060 BYD 20 BLW 2000
!FMN FMN NAV VOR UNUSBL 090-180/270-360 BYD 25 BLW 5000
Landing Systems (ILS). Distinguish components of an ILS from nonprecision
approach NAVAIDs by preceding the component with “ILS” followed by “RWY” and
the runway number (including single ILS airports).
!SHV SHV NAV ILS RWY 32 110.3 CMSN
!SUS SUS NAV SNOOP NDB/ILS RWY 8R LO OTS
!SHV SHV NAV ILS RWY 5 DCMSN
!DCA DCA NAV ILS RWY 18 LLZ OTS
!DTW DTW NAV ILS RWY 30 LLZ RTS
!CDR CDR NAV ILS RWY 2 FAN MKR OTS
!ANB EUF NAV ILS RWY 18 GP UNUSBL BLW 768
!ANB EUF NAV ILS RWY 36 GP UNUSBL CPD APCH BLW 1240
!TOL TOL NAV ILS RWY 25 CAT 1 UNUSBL DA TO TDZ
At airports that have LLZ approaches only, precede the outage with “ILS.”
Fan markers are NOTAM material as long as they are associated with an ILS
directional facility (SDF).
!BKW 107 NAV SDF RWY 4 OTS
type directional aid (LDA).
!DCA DCA NAV LDA RWY 18 OTS
!OJC OJC NAV VOR/DME 113.0/CH 77 CMSN
!OJC OJC NAV VOR/DME DCMSN
!OJC OJC NAV VOR OTS
!OJC OJC NAV DME OTS
1. VORTAC (all
!GSO GSO NAV VORTAC 116.2/CH 109 CMSN
!GSO GSO NAV VORTAC DCMSN
!OJC OJC NAV VORTAC OTS
2. VOR out of
service (DME/TACAN operational).
!GSO GSO NAV VOR OTS
3. DME out of
service (VOR operational/TACAN out).
!GSO GSO NAV TACAN OTS
When the DME portion of a VORTAC fails or is removed from service for
maintenance, the TACAN automatically becomes inoperative.
azimuth out of service (VOR/DME operational).
!GSO GSO NAV TACAN AZM OTS
5. VOT – out of
!SBY SBY NAV VOT OTS 11102420001110250300
serving one airport, and not associated with airway structure, must have
NOTAMs issued using the associated airport identifier as the affected
!ILN ILN NAV MXQ VOR OTS
serving more than one airport, or associated with airway structure, must
have NOTAMs issued using the TVOR identifier as the affected facility.
!DAY XUB NAV VOR OTS
k. NDB or NDB/LO
NDBs. Those NDBs located on or serving only that airport must have NOTAMs
issued using the associated airport as the affected facility.
!DCA DCA NAV GTN NDB OTS
2. If an NDB
serves more than one airport, issue a NOTAM using the identifier of the NDB
as the affected facility.
!MIV PNJ NAV NDB OTS
1. PNJ serves TEB and CDW.
in Alaska, collocated NDB/LOs are assigned five-letter names. All other NDBs
are assigned three-letter identifiers.
serving one airport must be issued with the three-letter identifier of the
airport as the affected location.
!SBY SBY NAV COLBE NDB/ILS RWY 32 LO OTS WEF 11092414301109241700
!SUS SUS NAV SNOOP NDB/ILS RWY 8R LO OTS
serving more than one airport must be issued under the three-letter
identifier of each airport that it serves. This procedure may
require coordination with other facilities.
!MCI MCI NAV HUGGY NDB/ILS RWY 9 LO OTS WEF 110102413001110241700
!FLV FLV NAV HUGGY NDB OTS WEF 11112413001111241700
In the above examples, Huggy NDB serves as a LO to runway 9 at Kansas City
Intl (MCI) and issued by Columbia (COU), Missouri AFSS. It also serves Fort
Leavenworth/Sherman AAF (FLV), Kansas, as an NDB and issued by Wichita (ICT),
!IND IND NAV VORTAC ID NOW VHP
When the NOTAM is cancelled, the FSS must notify the USNOF to have the old
identifier deleted from the NOTAM tables.
m. Global Positioning System (GPS).
1. All GPS
navigational aid outages will be reported directly to the USNOF by Air Force
Space Command (AFSPACECOM) monitoring facility. The USNOF will issue NOTAMs
under the accountability “GPS” with an affected location of “GPS.”
!GPS GPS NAV PRN 16 OTS
Global position system pseudorandom noise (PRN) number 16 is out of service
until further notice.
!GPS GPS NAV PRN 16 OTS WEF 1109231600-1109242300
1. Global position system pseudorandom noise (PRN) number 16
is out of service from September twenty-third two thousand eleven at sixteen
hundred until September twenty-fourth two thousand eleven at twenty-three
outages will be issued internationally under the affected location of “KNMH.”
2. Use standard
request/reply procedures to obtain all current GPS NOTAMs.
)SVC RQ DOM LOC=GPS
)SVC RQ INT LOC=KNMH
ORIGIN: PRECEDENCE:GG TIME:
TEXT:)SVC RQ INT LOC=KNMH
GPS operations are included in the Aeronautical Information Manual.
3. All GPS
test/anomaly NOTAMs will be reported to the USNOF by the Technical
Operations ATC Spectrum Engineering Services, Spectrum Assignment and
Engineering Services. The USNOF will issue NOTAMs under the accountability
“GPS” with an affected location of the associated center.
GPS 10/017 ZAB NAV GPS SIGNAL UNREL CONE SHAPED WI 257 NMR FHU FL400/ABV TO
135 NMR NEAR 10000 TO 96 NMR AT 5000 TO 76 NMR AT 3000 TO 48 NMR AT 1000
0600-1200 DLY WEF 1111160600-1111191200
Spectrum Assignment and Engineering Services will notify the closest flight
service station with the new NOTAM information.
n. Wide Area
Augmentation System (WAAS).
area-wide NOTAMs are issued when WAAS assets are out of service and will
contain the term “UNAVAILABLE.” They may also be issued when the WAAS
vertical and/or lateral availability for a large area is predicted to be
“UNRELIABLE.” These NOTAMs are generated by an automated Service Volume
Model (SVM) tool or from the NOCC. They will be issued by the USNOF as FDC
NOTAMs when a WAAS asset failure affects a large area, or as Center NOTAMs
if all airports with RNAV approaches within a center's boundary do not have
!KFDC KFDC WAAS ATLANTIC SATELLITE UNAVBL, WAAS LPV AND LNAV/VNAV MNM UNAVBL
EAST OF 110 DEGREE WEST LONGITUDE FOR CONUS AND PUERTO RICO WEF 1109241600
!FDC FDC WAAS UNREL 341100N/1245600W TO 345100N/1232200W TO 342600N/1231900W
TO 341700N/1245300W OR THE AML120123 TO AML190200 TO RIC270150 TO RIC3602321
!FDC ZDC WAAS LPV AND LNAV/VNAV MNM UNREL WEF 11092414001109241600
The first example shows the WAAS Atlantic Ocean Region West Geostationary
Satellite serving the Eastern part of the United States being out of
service. The second example is issued when WAAS LNAV is predicted to be
unreliable over a geographical area due to WAAS assets and/or GPS satellite
outages. The third example indicates WAAS vertical guidance LPV and LNAV/VNAV
for all airports with RNAV approaches in the Washington Center airspace are
predicted to be unreliable
2. WAAS site-specific NOTAMs are issued when the WAAS SVM predicts
vertical and/or lateral availability for an airport will not be
available. Site-specific NOTAMs will use the term “UNRELIABLE.” MILOPS sends
SVM predictions in NOTAM format to the FSS for entering the WAAS site-specific
NOTAMs into the U.S. NOTAM system (USNS).
!OSH OSH NAV WAAS LPV AND LNAV/VNAV MNM UNREL WEF 11102317001110231930
!DCA DCA NAV WAAS MNM UNREL WEF 11092415001109241630
The first example indicates the LPV and LNAV/VNAV minimums for Area
Navigation (RNAV) approaches at Oshkosh are predicted to be unreliable for
WAAS-equipped aircraft. The second example is for all RNAV minimums (LNAV,
LNAV/VNAV, and LPV) at Reagan National are predicted to be unreliable for
3. If a failure
occurs and the MILOPS server cannot distribute these NOTAM requests to
either the FSS or NOTAM office, a fax message will be generated to whichever
facility needs to issue a WAAS NOTAM. Using this fax message, an area-wide
or site-specific NOTAM will then be submitted into the USNS for the
generation of a WAAS NOTAM.
o. Ground Based
1. When a GBT
is out of service and/or expected by Technical Operations personnel to be
out of service for more than 30 minutes, issue a NOTAM D.
identifier used for the issuance of NOTAMs must be the 3-letter
identification where the GBT is located.
!BET BET NAV GBT OTS
!ANI ANI NAV GBT OTS WEF 11092116001109211900
5-3-8. HOURS OF
Changes in the hours
of operation of a NAVAID due to other than seasonal daylight time changes.
!SBY SBY NAV ILS RWY 32 UNMONITORED 02000900 DLY