1.2 AIS Headquarters

1.3 International NOTAM office (NOF) and Changi and Seletar AIS
Aerodrome Units

The service is provided in accordance with the provisions contained in ICAO Annex 15 - Aeronautical Information Services and the guidance material in the Aeronautical Information Services Manual (Doc 8126 - AN/872).

3.1 Aeronautical information is provided in the form of the Integrated Aeronautical Information Package (IAIP) containing the following elements:

Aeronautical Information Publication (AIP) and its Amendment service;
AIP Supplement (AIP SUP);
NoticeNOTAM to Airmen (NOTAM) and Pre-flight Information Bulletins (PIB);
Aeronautical Information Circulars (AIC); and
MonthlyChecklists Checklist and Monthly NOTAM ListLists

NOTAM and monthly checklistchecklists are disseminatedissued via the AFS. PIB can be retrieved from the automated AIM-SG system at Changi AIS or via the internet. All the other elements of the IAIP canare bedistributed retrievedby frommail. AIP SUP, AIC and the Monthly NOTAM Lists are also posted on the CAAS website at: http://www.caas.gov.sg
or
AIM-SG URL page at https://fpl-1.caasaim.gov.sghttp://aim.caasaim.gov.sg

3.2 Aeronautical Information Publication (AIP)

The AIP Singapore, issued in one volume, is the basic aeronautical information document published for the Republic of Singapore and contains information of a lasting character essential to air navigation. It is available in English only. It and is maintained up-to-date by aan regular amendment service of reprinted pages and, in the case of minor amendments, by manuscript corrections.

3.3 Amendment service to the AIP (AIP AMDT)

Amendments to the AIP, together with checklists, are made by means of replacement sheets. Regular AIP AMDT is published in accordance with the established regular intervals (see GEN 0.1-2 paragraphpara 3.2). It incorporates permanent changes to the AIP on the indicated publication date.

A brief description of the amendmentssubjects andaffected changesby madethe areAIP providedAMDT is given in the AIP AMDT cover sheet. New information included on the reprinted AIP pages is marked by either a vertical line or a horizontal arrow in the margin of the affected page to show the change or addition made.

Each AIP page and AIP replacement page introduced by an AIP AMDT, including the AIP AMDT cover pagesheet, is alsodated. The date consists of the day, month (by name) and year of publication. Each AIP AMDT cover sheet includes references to the serial numbers of those elements, if any, of the Integrated Aeronautical Information Package which have been incorporated into the AIP by the amendment and consequently cancelled.

Each AIP AMDT is allocated a serial number which is consecutive and based on the calendar year. The year, indicated by two digits, is a part of the serial number of the AIP AMDT.

A checklist of AIP pages containing the page numbers/chart titles and the publication date of the information is re-issued with each AIP AMDT and is an integral part of the AIP.

3.4 AIP Supplement (AIP SUP)

Temporary changes of long duration (3 months or more) and information of short duration which contains extensive text and/or graphics, supplementing the permanent information contained in the AIP, are published as AIP SUP. Operationally significant changes to the AIP are published in accordance with the AIRAC system and its established effective dates, and are identified clearly by the acronym AIRAC.

AIP SUP are placed at the beginning of the AIP. AIP SUP are published on yellow paper inorder to be conspic- uous. Each AIP SUP (regular or AIRAC) is allocated a serial number which is consecutive and based on the calendar year.

An AIP SUP is kept in the AIP as long as all or some of its contents remain valid. The period of validity of the information contained in the AIP SUP will normally be given in the AIP SUP itself. Alternatively, NOTAM may be used to indicate changes to the period of validity or cancellation of the AIP SUP.

The checklist of current AIP SUP is published in the monthly plain-language NOTAM List.

3.5 NOTAM and Pre-flight Information Bulletins (PIB)

A NOTAM contains information concerning the establishment, condition or change in any aeronautical facility, service, procedure or hazard, the timely knowledge of which is essential to personnel engaged in flight operations. Each NOTAM contains information in the order shown in the ICAO NOTAM format and is composed of abbreviated phraseology assigned to the ICAO NOTAM code complemented by ICAO abbreviations, indicators, identifiers, designators, callsigns, frequencies, figures and plain language. NOTAM originated and issued for Singapore FIR are distributed in ‘A’ series.

Each NOTAM is assigned a 4-digit serial number preceded by the letter ‘A’ indicating the series, followed by a stroke and 2 digits indicating the year of issue. The serial numbers begin with 0001 every year. A checklist of current NOTAM is issued every month via the AFS. Additionally, a monthlyprinted plain - language listNOTAM ofList Validis NOTAM, includingsent indicationsby ofairmail to those who had originally received the latestNOTAM AIPvia Amendment, AIPthe SupplementAFS, AICas issuedwell andas ato checklistothers foron AIPrequest. The SupplementsNOTAM list is also retrievable online at https://fpl-1.caasaim.gov.sghttp://www.caas.gov.sg

3.6 Aeronautical Information Circular (AIC)

Aeronautical Information Circular (AIC) contains information on the long-term forecast of major change in legislation, regulations, procedures or facilities; information of a purely explanatory or advisory nature liable to affect flight safety; and information or notification of an explanatory or advisory nature concerning technical, legislative or purely administrative matters which is inappropriate to the AIP or NOTAM, and is published as required.

Each AIC is numbered consecutively on a calendar year basis. The year, indicated by 2 digits, is a part of the serial number of the AIC. A checklist of current AIC is issued in the form of an AIC once a year.

3.7 Checklist and NOTAM List

A checklist of current NOTAM is issued monthly via the AFS. ASubsequently, a monthlyprinted NOTAM List containingis prepared and distributed by mail to all recipients of the Integrated Aeronautical Information Package. It contains the plain language presentation of current NOTAM, information on the serial numbers of the latest AIP AmendmentAMDT, AIP Supplement, SUP and AIC issued and aalso includes the checklist for AIP Supplements is also available onlineSUP.