चक्रवात 'अर्नब' के संभावित प्रभाव के बीच वायु सुरक्षा अलर्ट जारी

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Safety Circular 2026
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a.A-A"S
CI VI L OVI A;bilITFUORITY

AIR NAVIGATION SERVICES SAFETY

OF NEPAL
STANDARDS DEPARTMENT (ANSSSD)

HEAD OFFICE, KATHMANDU,

NEPAL

SAFETY CIRCULAR
Ref. No.: CAAN/ANSSSD/2026 /WC_02
Date of [ssue: 2093/07/ll BS (2g
Ocrober 2026)

3:3;:: IJi-fl[[Tffiffiff:ere cvcronic Storm "Arnab" on Air Navigarion
To: All concerned Air Navigation

Service Providers, Aerodrome operators,

Aircraft

1. PURPOSE
'fhis circular

has been issued to maintain

weather system as mentiotled in

operational saf-ety during the forecasted
severe
the special meteorological bulletin
issued by the Nepal

Meteorology Deparlment (NMD).

Nepal on2O83/o7loq ro. the period

of 2og3lo7l12-

2. BACKGROUND
As mentioned in the bulletin' a very

severe cyclonic storm (..Arnab,,)
making landfall
around Andhra Pradesh/visakhapatnam

is inducing widespread moisture
influx across
Nepal' This may bring moderate to
heavy rainfall, thunderstorms, strong
winds and
st-towfall in high-altitude and Himalayan
regions, potentially affecting aircraft
operations' particularly in Koshi,
Madhesh, Bagmati, Gandaki and
Lumbini provinces,
with possible impacts in parts of Kar,ali
and Suclur paschim provinces.
Heavy rainfall,
gusty winds' and low visibility
conditions are expected to peak between .l-hursday
(2083107/12) and Saturday (2083107114),
severely impacting rerminar approach
and

aerodrome surface conditions.

3. ITECOMMENDAI'ION F'OR AIR TITAI.'[.'IC
i. Air Traffic Management:

'

H:ilent

StiRVICES PROVIDERS

traffic planning and management for

f'lights during heavy precipitation

o coordinate with adjacent ArS units for departures,
o

holding and rerouting wlien
terminal weather deteriorates below
operating minima.
Ensure radar controllers rvith more
spacing to accommodate aircraft performance
in heavy precipitation or Missed
approach conflicts.

{,}rit

Safety Circular 2026

ii. Wind Shear, Turbulence:

' H:i:iil-ediate wind shear and sudden weather alerts to all tanding and departing
o Record pilot reporting of wind shear and
potential thunderstorms and

severe turbulence; advise crews
of
infbrrn meteorological offi.e.

iii' Surface condition Monitoring & Braking

Action Reporting:
o Record pirot reporting of braking action and
advise crews.
o Establish continuous coordinatio, with Airport
Airside Division to monitor water

Runway.

operations /civil Engineering/
accumulation, pooring, or hydroplaning
risks on

o closely monitor a, vehicre and ground equipment
o Ensure frequent runway inspections of the ,un*uymovements.
o

drring weather to clear debris
blown in by gusty winds.
Ensure uninterrupted operation
of Airfield lighting systems issuing
immediate
NOTAMs for any degradation.

4, RECOMMENDATION FOR AERODROME

OPERATORS:
Morritor rLlnway and taxiway conditions.
drainage. wind-re lated hazards
and the
serviceability of essential lacilities.
Ensure the readiness of emergency
response

arrangements and promptly d issemi

nate relevant operational i nformation.

5' RECOMMENDATION FOR AIRCRAT'T
CREWS:

OPERATORS AND FLIGHT

conduct thorough pre-flight weather
assessments, consider possible
delays, holding
and diversions' and ensllre appropriate
fuel planning and compliance with
applicable
operational procedures.

6, RECOMMENDATION FOR ALL
Ensure the readiness o1' critical

CONCERNED STAKEHOLDERS:
cNS/Al-M inl'rastructure, backr-rp power

and
communication facilities, as applicable;
assess operationar risks; and promptry
reporl
significant hazatds, disruptions or
safety o..rr..,.,..s through established
channels.

lssued by:

Air Navigation Services safety Standards
Aviation Safety and Security Regulation
Head Office, Civil Aviation Authority
Email : ansssd@caanepal. gov.np

Tel-977-15718008

Deparlment (ANSSSD)

Directorate civil Aviation Authority

of Nepal (CAAN)

of Nepal

\ -,P, W )T