{"id":19745,"date":"2025-05-24T10:18:59","date_gmt":"2025-05-24T08:18:59","guid":{"rendered":"https:\/\/aeronauticalinformation.it\/?p=19745"},"modified":"2026-06-16T09:00:18","modified_gmt":"2026-06-16T07:00:18","slug":"frequency-monitoring-codes","status":"publish","type":"post","link":"https:\/\/aeronauticalinformation.it\/index.php\/2025\/05\/24\/frequency-monitoring-codes\/","title":{"rendered":"Frequency Monitoring Codes"},"content":{"rendered":"

Le informazioni riguardanti i Frequency Monitoring Codes (FMC) sono state introdotte per la prima volta in AIP con con l\u2019AIRAC A5\/18, in vigore dal 21 Giugno 2018.<\/span><\/p>\n

Information<\/span><\/em> regarding Frequency Monitoring Codes (FMC) were for the first time introduced in AIP with with AIRAC A5\/18, effective 21 June 2018.<\/span><\/em><\/p>\n

\/\/\/\/\/<\/p>\n

Generalit\u00e0\u00a0<\/b><\/span><\/span><\/h5>\n

Diciamo subito che lo spazio aereo coinvolto dalla citata implementazione \u00e8 quello di classe G, all\u2019interno del quale sono stati identificati alcuni settori FMC, associati ad un codice SSR e ad una frequenza da monitorare. <\/span><\/span><\/span><\/p>\n

Allo scopo di prevenire e limitare le violazioni dello spazio aereo controllato, velivoli, elicotteri e apparecchi VDS avanzati equipaggiati con apparati radio, che operano all\u2019interno di queste aree:<\/span><\/span><\/span><\/p>\n

1) se stabiliscono contatto radio con il centro informazioni volo (FIC) e non diversamente istruiti dall\u2019ATC, inseriranno il codice trasponder A2000; <\/span><\/span><\/span><\/p>\n

2) se non stabiliscono il contatto radio con il centro informazioni volo (FIC) responsabile, devono inserire nel transponder Modo A il codice SSR assegnato a quello specifico settore e devono monitorare la frequenza indicata senza effettuare comunicazioni, a meno che contattati dall\u2019ente ATS responsabile o se cos\u00ec previsto dalla normativa applicabile;<\/span><\/span><\/span><\/p>\n

3) se stabiliscono il contatto radio con il centro informazioni volo (FIC) ed intendono monitorare, con il secondo apparato radio, la frequenza indicata per il settore inseriranno il codice SSR assegnato a quello specifico settore senza effettuare comunicazioni con lo stesso a meno che contattati dall\u2019ente ATS responsabile o se cos\u00ec previsto dalla normativa applicabile.<\/span>
\n<\/b><\/span><\/span><\/p>\n

General information<\/b><\/i><\/span><\/span><\/h5>\n

First of all, it must be specified that the airspace involved in this implementation is class G, within which some FMC sectors have been identified, associated with an SSR code and a frequency to be monitored.<\/i><\/span><\/span><\/p>\n

In order to prevent and limit violations of controlled airspace, aeroplanes, advanced ultralight machines and helicopters equipped with radio equipment, within these areas, shall:<\/i><\/span><\/span><\/p>\n

1) if they establish radio contact the flight information center (FIC) and not otherwise instructed by ATC, they will enter transponder code\u00a0 A2000;\u00a0<\/i><\/span><\/span><\/p>\n

2) if they do not establish radio contact with the responsible flight information center (FIC), they have to enter on the transponder A-Mode the SSR code assigned to that specific sector and they have to monitor the indicated frequency without communication, unless requested by the responsible ATS unit or if so provided by law;<\/em><\/i><\/span><\/span><\/p>\n

3) if they establish radio contact with the flight information center (FIC) and intend to monitor, with the second radio apparatus, the frequency indicated for the sector they will enter the SSR code assigned to that specific sector without communication, unless requested by the responsible ATS unit or if so provided by law.<\/em>
\n<\/i><\/span><\/span><\/p>\n

_____<\/p>\n

 <\/p>\n

Codice transponder A7000\u00a0<\/b><\/span><\/span><\/span><\/h5>\n

Gli apparecchi VDS non avanzati dotati di transponder SSR e altri aeromobili non equipaggiati con apparati radio, pur non stabilendo il contatto radio con l\u2019ente ATS responsabile, in quanto non destinatari di servizi del traffico aereo, potranno operare inserendo nel transponder il codice A7000, in applicazione del Regolamento (UE) \u2018SERA\u2019 e al Regolamento ENAC RAIT \u201cRegole dell\u2019aria\u201d. <\/span><\/span><\/span><\/span><\/p>\n

E\u2019 bene sottolineare che l\u2019inserimento del codice assegnato ad un settore non implica la fornitura di alcun tipo di servizio del traffico aereo idoneo a ricevere informazioni di volo e servizio di allarme, n\u00e9 autorizza ad entrare in uno spazio aereo controllato, se non in ottemperanza alle procedure in vigore.<\/span>
\n<\/b><\/span><\/span><\/span><\/p>\n

Transponder Code A7000<\/b><\/i><\/span><\/span><\/p>\n

Non-advanced ultra light machines equipped with SSR transponder and other aircraft not equipped with radio, even if they do not establish radio contact with responsible ATS unit because they are not users of air traffic control services, may operate by entering code A7000 on the transponder, in application of the (EU) \u2018SERA\u2019 Regulation and the ENAC RAIT \u201cRegole dell\u2019Aria\u201d.<\/i><\/span><\/span><\/p>\n

It should be specified that the entering the code assigned to a sector does not imply the provision of any type of air traffic service for the provision of flight information and alerting services, nor does it authorise entry into controlled airspace, if not in compliance with applicable procedures.<\/i><\/span><\/span><\/p>\n

_____<\/p>\n

 <\/p>\n

FMC e controllo del traffico aereo\u00a0<\/b><\/span><\/span><\/h5>\n

Il controllore del traffico aereo che osserva un traffico sconosciuto che ha inserito un FMC che sta per entrare o che sia gi\u00e0 all\u2019interno del proprio spazio aereo controllato senza autorizzazione \u00e8 consapevole del fatto che tale traffico sia: <\/span><\/span><\/span><\/p>\n

\u2013 in ascolto sulla frequenza pubblicata se ha inserito il codice FMC; oppure <\/span><\/span><\/span><\/p>\n

\u2013 in contatto con il FIC di competenza per la fruizione dei servizi ATS se ha selezionato il codice transponder A2000. <\/span><\/span><\/span><\/p>\n

In questo modo, pu\u00f2 tentare di stabilire in maniera tempestiva una comunicazione bilaterale allo scopo di fornire le appropriate informazioni, istruzioni e\/o autorizzazioni. <\/span><\/span><\/span><\/p>\n

La relativa comunicazione conterr\u00e0 elementi quali: <\/span><\/span><\/span><\/p>\n

1) codice SSR;\u00a0<\/span><\/span><\/span><\/p>\n

2) posizione della traccia radar del traffico sconosciuto rispetto ad uno specifico punto di riferimento facilmente identificabile dal pilota; 3) livello\/altitudine osservati sul Modo C, qualora disponibili;\u00a0<\/span><\/span><\/span><\/p>\n

4) direzione del volo osservata;\u00a0<\/span><\/span><\/span><\/p>\n

5) nominativo derivato dal Modo S, se disponibile.\u00a0<\/span><\/span><\/span><\/p>\n

______<\/p>\n

Il pilota che sospetti, in base alle informazioni ricevute, che l\u2019aeromobile al quale la comunicazione si riferisce sia proprio il suo, dovr\u00e0 rispondere tempestivamente.\u00a0<\/span><\/span><\/span><\/p>\n

Una volta stabilita una comunicazione bilaterale, per avere la certezza che si tratti effettivamente del traffico in questione:<\/span><\/span><\/span><\/p>\n

\u2013 se in contatto con il settore ATC, il controllore provveder\u00e0 alla sua identificazione radar e fornir\u00e0 istruzioni, avvisi e\/o informazioni, come appropriato;\u00a0<\/span><\/span><\/span><\/p>\n

\u2013 se in contatto con il FIC, potr\u00e0 essere trasferito in contatto con il settore ATC.<\/span><\/span><\/span><\/p>\n

Il codice SSR e l\u2019eventuale informazione del modo C associata rimangono non verificati finch\u00e9 ATC e pilota non applicano le appropriate procedure di identificazione e verifica.
\n<\/span><\/span><\/span><\/p>\n

\/\/\/\/<\/p>\n

FMC and Air Traffic Control<\/b><\/span><\/span><\/span><\/h5>\n

ATCO observing an unknown traffic, squawking an FMC, that is about to enter or is already within its controlled airspace without authorization is aware of the fact that such traffic is: <\/i><\/span><\/span><\/span><\/p>\n

a. listening to the published frequency if he entered the FMC code ; or <\/em><\/i><\/span><\/span><\/span><\/p>\n

b. in contact with the FIC responsible for ATS If he selected the transponder code A2000.<\/em><\/i><\/span><\/span><\/span><\/p>\n

ATCO may attempt to establish a bilateral communication in a timely manner in order to provide the appropriate information, instructions and\/or authorizations.\u00a0<\/em><\/i><\/span><\/span><\/span><\/p>\n

_____<\/p>\n

Transmissions will contain:<\/em><\/i><\/span><\/span><\/span><\/p>\n

1) SSR code;\u00a0<\/em><\/i><\/span><\/span><\/span><\/p>\n

2) position of the unknown traffic, referred to a familiar way point for the pilot;<\/em><\/i><\/span><\/span><\/span><\/p>\n

3) level\/altitude observed on C-Mode, if available;\u00a0<\/em><\/i><\/span><\/span><\/span><\/p>\n

4) direction of the observed flight;<\/em><\/i><\/span><\/span><\/span><\/p>\n

5) S-Mode derived callsign, if available.\u00a0<\/em><\/i><\/span><\/span><\/span><\/p>\n

______<\/p>\n

A pilot monitoring the frequency who suspects, on the basis of the information provided, that theirs is the aircraft being referred to, should promptly answer accordingly.<\/em><\/i><\/span><\/span><\/span><\/p>\n

Once a bidirectional communication has been established, to confirm flight\u2019s identity:\u00a0<\/em><\/i><\/span><\/span><\/span><\/p>\n

\u2013 if the aircraft concerned is on ATC frequency, the controller will provide his radar identification and issue the suitable instructions or advice;<\/em><\/i><\/span><\/span><\/span><\/p>\n

\u2013 if the aircraft concerned is on FIC frequency, it will be instructed to contact the adequate ATC Unit.<\/em><\/i><\/span><\/span><\/span><\/p>\n

_____<\/p>\n

The code and any associated C-Mode pressure-altitude reporting data are considered to be unverified, until an appropriate identification procedure between ATC Unit and aircraft has occurred..<\/em><\/i><\/span><\/span><\/span><\/p>\n

_______<\/i><\/p>\n

 <\/p>\n

Settori FMC<\/b><\/span><\/span><\/h5>\n

Ma veniamo ai settori FMC istituiti nello spazio aereo italiano, specificando che, per ognuno di essi, i limiti verticali devono essere intesi come segue:<\/span><\/span><\/span><\/p>\n

\u2013 limite verticale inferiore: SFC <\/span><\/span><\/span><\/p>\n

\u2013 limite verticale superiore: corrisponde al limite verticale inferiore degli spazi aerei controllati sovrastanti (CTR, TMA, CTA, rotte ATS) <\/span><\/span><\/span><\/p>\n

FMC Sectors <\/strong><\/span><\/span><\/span><\/h5>\n

We will now analyse the FMC sectors established in Italian airspace, specifying that, for each of them, vertical limits are to be intended as follows:<\/i><\/span><\/span><\/span><\/p>\n

\u2013 lower vertical limit: SFC <\/i><\/span><\/span><\/span><\/p>\n

\u2013 upper vertical limit: corresponds to the lower vertical limit of the controlled airspaces overlying the area (CTR, TMA, ATC, ATS routes)<\/i><\/span>
\n<\/b><\/span><\/span><\/p>\n

______<\/p>\n

 <\/p>\n

Milano FMC Areas<\/b><\/span><\/span><\/h5>\n
MILANO NORTH-WEST FMC Area\u00a0<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Milano FIC \/ If not in contact with Milano FIC <\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 134.425 MHz (APP Milano Radar) <\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code: <\/b>A4610 <\/span><\/span><\/span><\/p>\n

Nota: La CTR di Malpensa non \u00e8 inclusa nei limiti laterali e verticali di questo settore. <\/i><\/span><\/span><\/span><\/p>\n

Remark: Malpensa CTR is not included in the lateral and vertical limits of this sector.<\/i><\/span><\/span><\/span><\/p>\n

(informazioni aggiornate alla variante AIRAC A6\/25, in vigore dal 12 Giugno 2025)<\/i><\/span><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

_______<\/p>\n

MILANO WEST FMC Area\u00a0<\/b><\/span><\/span><\/span><\/h5>\n

Se non in contatto con Milano FIC \/ If not in contact with Milano FIC <\/span><\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 129.275 MHz (APP Milano Radar)<\/span><\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code: <\/b>A4614 <\/span><\/span><\/span><\/span><\/p>\n

Nota: <\/i>Le CTR di Torino e di Cuneo non sono incluse nei limiti laterali e verticali di questo settore. <\/i><\/span><\/span><\/span><\/span><\/p>\n

Remark:\u00a0Torino and Cuneo CTR are not included in the lateral and vertical limits of this sector.<\/i><\/span>
\n<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/a><\/p>\n

_______<\/h5>\n
<\/h5>\n
MILANO NORTH-EAST FMC Area\u00a0<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Milano FIC \/ If not in contact with Milano FIC <\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 126.300 MHz (APP Milano Radar) <\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code: <\/b>A4611 <\/span><\/span><\/span><\/p>\n

Nota:\u00a0<\/i>Le CTR di Linate, Bergamo e Piacenza non sono incluse nei limiti laterali e verticali di questo settore.<\/i><\/span>
\n<\/b><\/span><\/span><\/p>\n

Remark:\u00a0<\/i><\/span><\/span><\/span>Linate, Bergamo and Piacenza CTR are not included in the lateral and vertical limits of this sector.<\/i><\/span><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

_______<\/p>\n

 <\/p>\n

MILANO EAST FMC Area<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Milano FIC \/ If not in contact with Milano FIC<\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 135.900 MHz (APP Milano Radar) <\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code: <\/b>A4613 <\/span><\/span><\/span><\/p>\n

Nota:\u00a0<\/i>La CTR di Verona non \u00e8 inclusa nei limiti laterali e verticali di questo settore.<\/i><\/span>
\n<\/b><\/span><\/span><\/p>\n

Remark: <\/i><\/span><\/span><\/span>Verona CTR is not included in the lateral and vertical limits of this sector.<\/i><\/span><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

_____<\/p>\n

 <\/p>\n

MILANO NORTH FMC Area\u00a0<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Milano FIC \/ If not in contact with Milano FIC <\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 126.750 MHz (APP Milano Radar) <\/span><\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code:\u00a0<\/b>A4612 <\/span><\/span><\/span><\/span><\/p>\n

Nota:\u00a0<\/i>La CTR di Malpensa non \u00e8 inclusa nei limiti laterali e verticali di questo settore. <\/i><\/span><\/span><\/span><\/p>\n

Remark:\u00a0Malpensa CTR is not included in the lateral and vertical limits of this sector.<\/i><\/span>
\n<\/b><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

_______<\/p>\n

_______<\/p>\n

PADOVA CENTRAL FMC Area\u00a0<\/b><\/span><\/span><\/span><\/h5>\n

Se non in contatto con Padova FIC \/ If not in contact with Padova FIC <\/span><\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 120.725 o 134.750 MHz (Padova ACC) <\/span><\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code: <\/b>A4777<\/span>
\n<\/b><\/span><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

_______<\/p>\n

 <\/p>\n

PADOVA CENTRAL EAST FMC Area\u00a0<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Padova FIC \/ If not in contact with Padova FIC <\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 119.175 MHz (Padova CE0) <\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code: <\/b>A4776 <\/span><\/span><\/span><\/p>\n

Nota:\u00a0<\/i>La CTR di Ronchi non \u00e8 inclusa nei limiti laterali e verticali di questo settore.<\/i><\/span>
\n<\/b><\/span><\/span><\/p>\n

Remark: <\/i><\/span><\/span><\/span>Ronchi CTR is not included in the lateral and vertical limits of this sector.<\/i><\/span><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

_______<\/p>\n

 <\/p>\n

PADOVA CENTRAL WEST FMC Area\u00a0<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Padova FIC \/ If not in contact with Padova FIC <\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 118.900 MHz (Padova SEO) <\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code: <\/b>A4775 <\/span><\/span><\/span><\/p>\n

Nota: <\/i>La CTR di Venezia non \u00e8 inclusa nei limiti laterali e verticali di questo settore. <\/i><\/span><\/span><\/span><\/p>\n

Remark:\u00a0Venezia CTR is not included in the lateral and vertical limits of this sector.<\/i><\/span>
\n<\/b><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

______<\/p>\n

 <\/p>\n

ROMA FMC AREAS<\/b><\/span><\/span><\/h5>\n
ROMA NORD\/ ROMA CENTRAL\/ROMA NORD-EST\/ROMA SUD-EST<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Roma FIC \/ If not in contact with Roma FIC <\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 125.500 MHz (Roma Radar) <\/span><\/span><\/p>\n

Frequency Monitoring Code:\u00a0<\/b>A5140<\/span><\/span><\/p>\n

Nota:\u00a0Le CTR di <\/i>Roma, Latina, Pratica di Mare, Frosinone e Viterbo <\/i>non sono incluse nei limiti laterali e verticali di questo settore.<\/i><\/span><\/span><\/p>\n

Remark: <\/i><\/span><\/span>Roma, Latina, Pratica di Mare, Frosinone e Viterbo<\/i><\/span><\/span> CTR are not included in the lateral and vertical limits of this sector.<\/i><\/span><\/span><\/span><\/p>\n

\/\/\/\/\/<\/h5>\n
ROMA WEST<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Roma FIC \/ If not in contact with Roma FIC <\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 130.900 MHz (Roma Radar) <\/span><\/span><\/p>\n

Frequency Monitoring Code:\u00a0<\/b>A5140<\/span><\/span><\/p>\n

Nota:\u00a0L<\/i>a<\/i> CTR di <\/i>Roma <\/i>non \u00e8 inclus<\/i>a<\/i> nei limiti laterali e verticali di questo settore.<\/i><\/span><\/span><\/p>\n

Remark: <\/i><\/span><\/span>Roma<\/i><\/span><\/span> CTR <\/i><\/span><\/span>is<\/i><\/span><\/span> not included in the lateral and vertical limits of this sector.<\/i><\/span><\/span><\/span><\/p>\n

\"\"<\/a><\/p>\n

(Informazioni aggiornate alla variante AIRAC A7\/26, in vigore dal 9 Luglio 2026)<\/span><\/span><\/span><\/p>\n

(Information updated at AIRAC A7\/26, effective from July 9, 2026)<\/span><\/span><\/span><\/p>\n

______<\/p>\n

 <\/p>\n

ALGHERO\/OLBIA FMC Area\u00a0<\/b><\/span><\/span><\/h5>\n

Se non in contatto con Roma FIC \/ If not in contact with Roma FIC <\/span><\/span><\/span><\/span><\/p>\n

Monitoring Frequency<\/b>: 125.950 MHz (Roma Radar) <\/span><\/span><\/span><\/p>\n

Frequency Monitoring Code:\u00a0<\/b>A5137<\/span><\/span><\/span><\/p>\n

Nota:\u00a0<\/i>Le CTR di Alghero ed Olbia non sono incluse nei limiti laterali e verticali di questo settore.<\/i><\/span>
\n<\/b><\/span><\/span><\/p>\n

Remark: <\/i><\/span><\/span><\/span>Alghero and Olbia CTR are not included in the lateral and vertical limits of this sector.<\/i><\/span><\/span><\/span><\/p>\n

\"Frequency<\/a><\/p>\n

_______<\/p>\n

_______<\/p>\n

_______<\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Le informazioni riguardanti i Frequency Monitoring Codes (FMC) sono state introdotte per la prima volta in AIP con con l’AIRAC A5\/18, in vigore dal 21 Giugno 2018. Information regarding Frequency Monitoring Codes (FMC) were for the first time introduced in AIP with with AIRAC A5\/18, effective 21 June 2018.<\/p>\n","protected":false},"author":2,"featured_media":17753,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[544,545],"class_list":["post-19745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-airac","tag-fmc","tag-frequency-monitoring-codes"],"yoast_head":"\nFrequency Monitoring Codes - Aeronautical Information<\/title>\n<meta name=\"description\" content=\"Frequency Monitoring Codes. 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