U.S. DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION

ORDER
JO 7930.2M
Effective Date:
September 25, 2008
 
     
Subject:  Notices to Airmen

Includes Change 1 Effective February 11, 2010

Section 3. NAVAID NOTAMs

5-3-1. GENERAL

a. Originate NOTAMs concerning NAVAIDs for which your facility has monitor responsibility.

b. NAVAID NOTAMs will be prefaced with the keyword NAV following the Location Identifier.

EXAMPLE-
!DCA LDN NAV VOR UNMNT

5-3-2. REPORTING NAVAID MALFUNCTIONS

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 NOTAM.

5-3-3. UNPROGRAMMED EXTENDED SHUTDOWNS

Unprogrammed extended 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.

NOTE-
Except for emergency shutdowns, technical operations personnel are expected to give at least 1-hour notice to the FSS.

5-3-4. NAVAID MAINTENANCE SHUTDOWNS

Information concerning maintenance shutdown of NAVAIDs that are a part of the NAS shall be handled as follows:

a. Routine 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.

b. Emergency shutdown. When possible, at least 1-hour advance notice should be obtained so that appropriate dissemination may be made prior to shutdown.

c. Extended 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.

5-3-5. UNMONITORED NAVAIDs

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 unmonitored status.

c. When issuing a NOTAM describing a facility as unmonitored, do not use the category of monitor, only the contraction UNMON.

EXAMPLE-
!DCA LDN NAV VOR UNMON

d. If the NAVAID is reported as being out of service, the unmonitored NOTAM shall be canceled.

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 component needed for the approaches. Those components are outer marker (OM), middle marker (MM), inner marker (IM), glide slope (GP), localizer (LLZ), locator at the outer marker (LO), distance measuring equipment (DME), approach lighting system (ALS), sequence flashing lights/runway alignment indicator lights (SFL/RAIL), touchdown zone lights (TDZL), runway centerline lights (RCLL), runway edge lights (RWY LGTS), RVR touchdown (RVRT), RVR midpoint (RVRM), and RVR rollout (RVRR).

b. Suspension of category(ies) of operation due to abnormal status of ILS and ancillary electronic components:

1. One of the LLZ transmitters inoperative.

2. LLZ far field monitor inoperative.

3. Failure of one monitor in a dual channel LLZ or GP monitor system.

4. LLZ/GP operating on battery standby power source when main power source has failed.

5. ALS standby power source inoperative.

6. SFL/RAIL standby power source inoperative.

7. TDZL/RCLL standby power source inoperative.

8. RWY LGTS standby power source inoperative.

9. More than 10 percent of touchdown zone lights, runway centerline lights, runway edge lights, and taxiway lights are not functioning.

EXAMPLES-
!ATL ATL NAV RWY 8L ILS CAT 2 NA

!ATL ATL NAV RWY 8L ILS CAT 3 NA

!ATL ATL NAV RWY 8L ILS CAT 2/3 NA WEF 0711251600-0711251900

NOTE-
Do not include the reason for the suspension of operation.

REFERENCE-
FAAO 6750.24, Appendix 1 Abnormal Checklist.

NOTE-
FDC NOTAMs are not required for the ILS component outages/abnormalities or suspension of operations (CAT 1, 2, or 3) addressed in this paragraph, but may be issued based on other operational requirements. If an FDC NOTAM has been issued, no other NOTAM is required.

5-3-7. NOTAM (D) NAVAID

a. The flight service specialist is responsible for formatting the information correctly.

NOTE-
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.

c. Disseminate commissioning, decommissioning, outages, or UNMNT 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.

d. Restrictions to NAVAIDs are normally published by segment; e.g., 020-055 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.

EXAMPLES-
!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

e. Instrument Landing Systems (ILS). Distinguish components of an ILS from nonprecision approach NAVAIDs by preceding the component with the runway number followed by “ILS” (including single ILS airports).

EXAMPLES-
!SHV SHV NAV RWY 32 ILS 110.3 CMSN

!SHV SHV NAV RWY 5 ILS DCMSN

!DCA DCA NAV RWY 18 ILS LLZ OTS

!IAD IAD NAV RWY 30 ILS LLZ RTS

!CDR CDR NAV RWY 2 ILS GP/OM/MM OTS

!CDR CDR NAV RWY 2 ILS FAN MKR OTS

!ANB EUF NAV RWY 18 ILS GP UNUSBL BLW 768

!ANB EUF NAV RWY 36 ILS GP UNUSBL CPD APCH BLW 1240

NOTE-
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 approach.

NOTE-
The distinction between ILS and MLS must be shown since both systems may be commissioned and operating to serve the same runway. When all components of the ILS/MLS are OTS, it is not necessary to identify each component.

f. Microwave Landing Systems (MLS).

EXAMPLES-
!ICT ICT NAV RWY 19L MLS CH 556 CMSN

!ICT ICT NAV RWY 19L MLS DCMSN

!ICT ICT NAV RWY 19L MLS ELEV OTS

!ICT ICT NAV RWY19L MLS AZM OTS

!BNA BNA NAV RWY 31 MLS AZM UNUSBL BYD 23 BLW 2400

!BNA BNA NAV RWY 13

g. Simplified directional facility (SDF).

EXAMPLE-
!BKW I07 NAV RWY 4 SDF OTS

h. Localizer type directional aid (LDA).

EXAMPLE-
!DCA DCA NAV RWY 18 LDA OTS

i. VOR/DME.

EXAMPLES-
!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

j. VORTAC.

1. VORTAC (all components, VOR/DME/TACAN).

EXAMPLES-
!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).

EXAMPLE-
!GSO GSO NAV VOR OTS

3. DME out of service (VOR operational/TACAN out).

EXAMPLE-
!GSO GSO NAV TACAN OTS

NOTE-
When the DME portion of a VORTAC fails or is removed from service for maintenance, the TACAN automatically becomes inoperative.

4. TACAN azimuth out of service (VOR/DME operational).

EXAMPLE-
!GSO GSO NAV TACAN AZM OTS

5. VOT – out of service

EXAMPLE-
!SBY SBY NAV VOT OTS WEF 0710242000-0710250300

k. TVOR.

1. TVORs serving one airport, and not associated with airway structure, shall have NOTAMs issued using the associated airport identifier as the affected facility.

EXAMPLE-
!ILN ILN NAV MXQ VOR OTS

2. TVORs serving more than one airport, or associated with airway structure, shall have NOTAMs issued using the TVOR identifier as the affected facility.

EXAMPLE-
!DAY XUB NAV VOR OTS

l. NDB or NDB/LO as follows:

1. Terminal NDBs. Those NDBs located on or serving only that airport shall have NOTAMs issued using the associated airport as the affected facility.

EXAMPLE-
!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.

EXAMPLE-
!MIV PNJ NAV NDB OTS

NOTE-
1. PNJ serves TEB and CDW.

2. Except in Alaska, collocated NDB/LOs are assigned five-letter names. All other NDBs are assigned three-letter identifiers.

3. NDB/LO outages.

(a) NDB/LO serving one airport must be issued with the three-letter identifier of the airport as the affected location.

EXAMPLES-
!SBY SBY 32 NAV RWY 32 COLBE NDB/ILS LO OTS WEF 0909241430-0909241700

!SUS SUS NAV RWY 8R SNOOP NDB/ILS LO OTS

(b) NDB/LO serving more than one airport shall be issued under the three-letter identifier of each airport that it serves. This procedure may require coordination with other facilities.

EXAMPLES-
!MCI MCI NAV RWY 9 HUGGY NDB/ILS LO OTS WEF 0710241300-0710241700

!FLV FLV HUGGY NDB OTS WEF
0711241300-0711241700

NOTE-
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), Kansas.

m. NAVAID identification change.

EXAMPLE-
!IND IND NAV VORTAC ID NOW VHP

NOTE-
When the NOTAM is cancelled, the FSS shall notify the USNOF to have the old identifier deleted from the NOTAM tables.

n. Long-range navigation systems (LORAN).

1. LORAN navigational aid outages will be reported directly to the USNOF by the U.S. Coast Guard monitoring facilities. The USNOF will issue NOTAMs under the affected location “LRN” by station letter.

2. 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.”

EXAMPLE-
!GPS GPS NAV PRN 16 OTS

NOTE-
Global position system pseudorandom noise (PRN) number 16 is out of service until further notice.

EXAMPLE-
!GPS GPS NAV PRN 16 OTS WEF 0709231600-0709242300

NOTE-
1. Global position system pseudorandom noise (PRN) number 16 is out of service from September twenty-third two thousand seven at sixteen hundred until September twenty-fourth two thousand seven at twenty-three hundred.

2. GPS outages will be issued internationally under the affected location of “KNMH.”

3. Use standard request/reply procedures to obtain all current LORAN-C and GPS NOTAMs.

EXAMPLES-
GG KDZZNAXX
121413 KDCAYFYX
)SVC RQ DOM LOC=LRN,GPS

or

GG KDZZNAXX
121413 KDCAYFYX
)SVC RQ INT LOC=KNMH

or

ORIGIN: PRECEDENCE:GG TIME:
ACK:N
ADDR:KDZZNAXX
TEXT:)SVC RQ INT LOC=KNMH

NOTE-
LORAN and GPS operations are included in the Aeronautical Information Manual.

4. 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.

EXAMPLE-
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 0711160600-0711191200

NOTE-
Spectrum Assignment and Engineering Services will notify the closest flight service station with the new NOTAM information.

o. Wide Area Augmentation System (WAAS).

1. 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 WAAS availability.

EXAMPLES-
!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 0709241600

!FDC FDC WAAS UNREL 341100N/1245600W TO 345100N/1232200W TO 342600N/1231900W TO 341700N/1245300W OR THE AML120123 TO AML190200 TO RIC270150 TO RIC3602321 WEF 0709231200

!FDC ZDC WAAS LPV AND LNAV/VNAV MNM UNREL WEF 0709241400-0709241600

NOTE-
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).

EXAMPLES-
!OSH OSH NAV WAAS LPV AND LNAV/VNAV MNM UNREL WEF 0710231700-0710231930

!DCA DCA NAV WAAS MNM UNREL WEF
0709241500-0709241630

NOTE-
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 WAAS-equipped aircraft.

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.

p. Ground Based Transceiver (GBT).

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, issued a NOTAM D.

2. The identifier used for the issuance of NOTAMs shall be the 3-letter identification where the GBT is located.

EXAMPLES-
!BET BET NAV GBT OTS

!ANI ANI NAV GBT OTS WEF 0709211600-0709211900

5-3-8. HOURS OF OPERATION

Changes in the hours of operation of a NAVAID due to other than seasonal daylight time changes.

EXAMPLE-
!SBY SBY NAV RWY 32 ILS UNMNT 0200-0900 DLY

 

Return to Chapter 5 Section 2 Go to Chapter 5 Section 4
Return to Air Traffic Publications Library Return to JO 7930.2 NOTAM Home Page