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Post:

Civil Aviation Authority of Viet Nam
Air Navigation Department
119 Nguyen Son Street,
Long Bien District
Ha Noi, Viet Nam

Telephone:  +84 24 38274191

Fax:  +84 24 38274194

Email:  and@caa.gov.vn

Web:  http://caa.gov.vn

AIP Supplement for VIET NAM

AIP SUP

05/26

Effective from 19 FEB 2026

to PERM

Published on 30 JAN 2026

  REVISION OF LOW VISIBILITY PROCEDURES AT NOI BAI INTERNATIONAL AIRPORT (VVNB)

1 — INTRODUCTION

This section supplements the following portion(s) of the AIP: AD.

This AIP Supplement issues notification of the revision of Low Visibility Procedures (LVP) at Noi Bai International Airport (VVNB).

This AIP Supplement replaces item VVNB AD 2.22-1, pages from AD 2-VVNB-1-69 to 80, Viet Nam AIP.

2 — DETAILS

2.1  Purpose

Low visibility procedures (LVP) are operational procedures applied to ensure the safety, regularity and efficiency of the activities conducted in the movement area of the Noi Bai International Airport under the low visibility conditions.

2.2  Scope and applicability

LVP shall be applied to Noi Bai APP/TWR, Noi Bai Aerodrome Meteorological Centre, units responsible for the maintenance of technical facilities serving the operation of both RWYs, pilots, aircraft operators and organisations, individuals involved in low visibility operation at Noi Bai International Airport.

2.3  General regulations

2.3.1  Permission/Authorization by Civil Aviation Authority of Viet Nam (CAAV)

  1. Domestic and international airlines, who want to conduct ILS CAT II operation at international airports in Viet Nam shall submit an application to the CAAV for approval or recognition prior to commencing such operations.

  1. The application submitted to the CAAV shall includes name of the operator, aircraft type and registration, copies of aircraft type certificate document and pilots’ approval for ILS CAT II authorization issued by the relevant authority of the State of the Operator (applicable to international airlines).

  1. Upon being approved or recognized by the CAAV, pilots shall comply with CAT II operating standard and these operational procedures and shall immediately notify Noi Bai APP/TWR in the situation that CAT II operational requirements cannot be met.

2.3.2  CAT II RWY operations under LVP

  1. Normally, only one RWY is in use at any given time for ILS CAT II landing operations. Noi Bai TWR shall notify the Noi Bai Emergency Operations Center of the RWY for CAT II operations.

  2. The application of CAT II operations on one RWY (11L or 11R) does not relieve relevant units from continuously monitoring the operational status of the ILS CAT II system of the other RWY, in order to ensure the highest level of readiness for timely and safe RWY changeover.

  3. In the situation that the RWY currently used for CAT II operations becomes degraded and no longer meets CAT II operational standards, Noi Bai TWR shall, based on actual conditions, decide to transfer CAT II operations to the other RWY. Such transfer shall only be conducted after confirmation by the Noi Bai Emergency Operations Center that all CAT II operational requirements for the designated RWY are fully met.

2.3.3  Minimum Requirements for CAT II Operations

2.3.3.1  For ILS CAT II critical/sensitive areas

Personnel and vehicles shall not be permitted to operate within the ILS CAT II critical and sensitive areas (refer to item 2.7 of this procedures).

2.3.3.2  For ILS/DME system for CAT II RWY

  1. Primary and secondary of LLZ, GP, DME shall be serviceable;

  2. All monitoring systems of LLZ, GP and DME shall be serviceable;

  3. There is no deviation between any two of the monitors for three devices LLZ, GP, DME can lead to device's warning;

  4. ILS/DME remote control system shall be serviceable.

2.3.3.3  RWY lighting system for CAT II operation

  1. Approach lighting system (ALS):

    1. Within the range of 450 m (from the THR): More than 95% of lights shall be serviceable and no two consecutive lights shall be unserviceable;

    2. Outside the range of 450 m (from the THR): More than 85% of lights shall be serviceable and no two consecutive lights shall be unserviceable.

  2. RWY centre line lights, RWY edge lights, THR lights: More than 95% of lights shall be serviceable and no two consecutive lights shall be unserviceable;

  3. Touchdown zone lighting system: More than 90% of lights shall be serviceable and no two consecutive lights shall be unserviceable;

  4. RWY end lighting system: More than 70% of lights shall be serviceable and no two consecutive lights shall be unserviceable;

  5. Stop bars lighting system: More than 95% of lights shall be serviceable and no two consecutive lights shall be unserviceable.

2.3.3.4  Runway Visual Range (RVR) system

The RVR for the CAT II RWY shall be serviceable. RVR values at RWY TDZ and Mid-point (MID) stations shall be directly displayed at the operational positions of Noi Bai TWR/APP.

2.3.3.5  For power supply (UPS) system

Electrical power source for lighting system shall be provided by UPS and the main power grid as the primary source, with generator power provided as the standby source.

2.3.3.6  Aerodrome emergency services

Aerodrome emergency services, facilities and equipments ensure meeting CAT 9 standard and are available to cope with urgency following the current emergency procedures.

2.3.4  Applicable standards in condition of low visibility

2.3.4.1  Preparation of LVP application

When the weather condition at Noi Bai International Airport appear at least one of the following conditions:

  1. RVR at TDZ (11R/L station), or RWY Mid-point (MID station 11R/L) is 1 200 m or less and tends to decrease; or.

  2. Ceiling (BKN or above) on the cloud altimeter at the beginning of RWY 11R/L (Sky 11R/L index displayed on the AWOS AVIMET Noi Bai terminal) is at or below 300 ft (90 m); or

  3. When the sky is dark, clouds cannot be observed and AWOS provides vertical VIS (VVnnn), applies to criteria VV is at or below 300 ft (90 m).

2.3.4.2  Commencement of LVP application

When the weather condition at Noi Bai international airport appear at least one of the following conditions:

  1. RVR at TDZ (11R/L station), or RWY Mid-point (MID-station 11R/L) is 900 m or less and tends to decrease; or

  2. Ceiling (BKN or above) on the cloud altimeter at the beginning of RWY 11R/L (Sky 11R/L index displayed on the AWOS AVIMET Noi Bai terminal) is 250 ft (75 m) or below; or

  3. When the sky is dark, clouds cannot be observed and AWOS can provide vertical VIS (VVnnn), applies to criteria VV is 250 ft (75 m) or below.

Note: When LVP is in operation and weather conditions improve to ILS CAT I minima operation but CAT II minimum operational requirements are not met follows item 2.3.3, LVP shall remain in force. For ILS CAT I minima, VIS shall be used only when RVR is unavailable or unserviceable.

2.3.4.3  Termination of LVP

LVP shall be terminated when the weather conditions at Noi Bai International Airport remain better than the criteria specified in item 2.3.4 of these procedures stable in 15 minutes and tends to improve.

2.4  Operating procedures in low visibility condition

2.4.1  Approach control procedures

2.4.1.1  During LVP application, Noi Bai APP, Noi Bai TWR shall continuously provide the information related to the RWY in use for landing is as follows:

  1. Operational status of ILS system;

  2. Operational status of visual aids system;

  3. RVR at TDZ and MID stations.

2.4.1.2  In addition to schedule information, on initial contact or thereafter, Noi Bai APP shall provide to arriving aircraft the information related to the RWY in use for landing as follows:

  1. Current RVR values at the TDZ station;

  2. RVR at the MID station if the values at MID station is below 550 m.

  3. Unserviceable status of any component of equipments serving CAT II operation, which is not notified in the previous ATIS broadcast.

2.4.1.3  Aircraft shall follow a standard approach to establish on the ILS or Noi Bai APP vectors aircraft ensuring interception of the LLZ at not less than 9 NM from touchdown.
2.4.1.4  Appropriate separation shall be applied landing aircraft to ensure that landing clearance can be issued before the aircraft reaches 2 NM from touchdown. In case of departing aircraft taking off between two landing aircraft, separation shall be increased accordingly.
2.4.1.5  Speed control shall not be applied to aircraft conducting intermediate or final approach on the ILS.
2.4.1.6  A minimum separation of 8 NM shall be applied between a departing aircraft and a succeeding landing aircraft, i.e a departing aircraft starts rolling for take-off before to the other succeeding landing aircraft reaches 8 NM from touchdown.
2.4.1.7  ILS CAT II approach and landing procedures shall only applied when all CAT II operationall requirements are met (applicable to RWY for CAT II operations) and flights operated by an airlines that are certified/approved for CAT II operations by CAAV.

2.4.2  Aerodrome control procedure

2.4.2.1  Landing clearance shall be issued to the aircraft before it reaches 2 NM from touchdown, in case of an unsuccessful approach, ATC advise aircraft to execute a missed approach.
2.4.2.2  Appropriate exit TWYs shall be used for landing aircraft to vacate the RWY CAT II operations and the LLZ sensitive area: Landing clearance shall not be issued until:

    1. The preceding landing aircraft has vacated LLZ sensitive area;

    2. The preceding departing aircraft is airborne and has passed the LLZ antenna.

2.4.2.3  Personnel, aircraft and vehicles shall not be permitted to enter LLZ sensitive area in front of the approaching aircraft while the aircraft is within a distance of 2 NM from touchdown until the deceleration is completed.
2.4.2.4  For departing aircraft in CAT II conditions: Personnel, aircraft and vehicles shall not be permitted to enter LLZ sensitive area of RWY CAT II operations in front of departing aircraft when aircraft is received the take-off clearance until it is airborne and has passed the LLZ antenna.
2.4.2.5  Departing and arriving aircraft shall not be permitted to stop, hold or taxi into the ILS critical/sensitive area of RWY CAT II operation when there is an aircraft is approaching to land.
2.4.2.6  Taxi tracks are used in LVP in order to support pilots in verification of aircraft’s position on the ground during LVP operation.
2.4.2.7  Immediately implementing emergency procedures in case of radio communication failure or the aircraft’s current position is not displayed on surface movement radar.

2.4.3  Aerodrome control movement procedure

2.4.3.1  Taxiing instructions and information related to flight operation shall be provided to pilots briefly, sufficiently and clearly; pilots shall read back taxiing clearance, avoid hearing unclearly or misunderstanding the clearance. Enhance observing of aircraft and vehicles moving process to ensure that pilots strictly follow ATC instructions/clearance.
2.4.3.2  Monitoring aircraft approaching to land and requesting aircraft quickly vacating RWY and ensure that aircraft do not stop within LLZ sensitive area of RWY CAT II operations that causes downgrade ILS (CAT) operation for the following landing aircraft.
2.4.3.3  Follow-me car service shall be provided for arriving aircraft.
2.4.3.4  Take-off from the intersections is not permitted.
2.4.3.5  Vehicles are not allowed to operation on TWYs N1, N2, N3, N4 and N5 (including all aircraft and vehicles, except in emergency situations).
2.4.3.6  Aerodrome control movement procedures in LVP.

  1. Vehicles shall not enter RWY if landing aircraft has reached at 8 NM from touchdown;

  2. Vehicles are prohibited within manoeuvring area unless cleared by Noi Bai TWR;

  3. Vehicles are not allowed to hold on the positions closer to RWY than the holding position in front of RWY (stop bars lights).

  4. Vehicles are not allowed to operation on TWYs N1, N2, N3, N4 and N5 (except in emergency situations).

  5. All construction activities must be suspended during the application of LVP.

2.5  Implementations in condition of low visibility

2.5.1  When weather condition decreases to LVP

  1. Ensure to broadcast the phrase “LOW VISIBILITY PROCEDURES IN OPERATION” on ATIS.

  2. Timely inform pilots to suspend or do not apply ILS CAT II approach procedures;

2.5.2  Decrease component in ILS CAT II operation standard

  1. When ILS CAT II can not be applied, Noi Bai TWR must immediately inform the relevant aircraft, Noi Bai APP and apply appropriate flight operation procedures in accordance with regulations;

  2. Noi Bai TWR/APP inform to relevant aircraft and apply appropriate flight operation procedures in accordance with regulations;

2.6  Responsibilities of aircraft operators and pilots

  1. Aircraft operator shall ensure that the latest updated documents related to flight procedures, operational procedures and technical systems support landing two RWYs at Noi Bai International Airport are provided to the relevant pilots.

  2. Pilots operating at Noi Bai International Airport shall be thoroughly familiar with the applicable flight procedure charts and shall strictly comply with instructions and clearances issued by relevant ATS units.

  3. When operating in LVP conditions:

    1. Pliots shall strictly comply with instructions issued by Noi Bai APP/TWR;

    2. Aircraft shall not be permitted to hold at positions closer to RWY than the designated RWY holding positions, unless otherwise instructed by Noi Bai TWR;

    3. Ensure the correct RWY usage in accordance with ATC instructions issued by Noi Bai TWR;

    4. Switch on anti-collision lights and position lights to personnel to determine the aircraft’s position;

    5. Increase vigilance by enhanced visual lookout and radio monitoring for the aircraft;

    6. Pilot’s shall promptly inform Noi Bai APP/TWR if aircraft, pilots are not qualified or unable to meet the operational requirements of the approach or departure procedure currently in use.

    7. Pilots shall read back taxiing clearances clearly to avoid mishearing or misunderstanding.

2.7  The critical and sensitive area charts of ILS CAT I - RWYs 11R, 29L, 11L, 29R and ILS CAT II - RWY 11L/R

  1. Critical and sensitive area of ILS CAT I - RWY 11L.

    GLIDE PATH 11L CAT I


     

    LOCALIZER 11L CAT I


  2. Chart of the critical and sensitive area of ILS CAT II - RWY 11L.

    GLIDE PATH 11L CAT II


     

    LOCALIZER 11L CAT II


  3. Chart of the critical and sensitive area of ILS CAT I - RWY 11R.

    GLIDE PATH 11R CAT I


    LOCALIZER 11R CAT I


     

  4. Chart of the critical and sensitive area of ILS CAT II - RWY 11R.

    GLIDE PATH 11R CAT II


     

    LOCALIZER 11R CAT II


  5. Chart of the critical and sensitive area of ILS CAT I - RWY 29L.

    GLIDE PATH 29L CAT I


    LOCALIZER 29L CAT I


  6. Chart of the critical and sensitive area of ILS CAT I - RWY 29R.

    GLIDE PATH 29R CAT I


    LOCALIZER 29R CAT I


3 — EFFECT

This AIP Supplement becomes effective from 19 FEB 2026.

4 — CANCELLATION

Any change relating to this AIP Supplement shall be notified by NO TAM.

This AIP Supplement shall remain in force until its content has been in corporated into AIP Viet Nam.

Layout of Aerodrome Ground Movement chart during constructing time