SriLankan A320 over Indonesia on Jun 5th 2025, anti ice failure, nav disagree, unreliable airspeed, alternate law, AP and ATHR off

Last Update: June 20, 2025 / 19:48:53 GMT/Zulu time

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Incident Facts

Date of incident
Jun 5, 2025

Classification
Incident

Airline
Srilankan Airlines

Flight number
UL-306

Departure
Colombo, Sri Lanka

Destination
Singapore, Singapore

Aircraft Registration
4R-ABM

Aircraft Type
Airbus A320

ICAO Type Designator
A320

A SriLankan Airbus A320-200, registration 4R-ABM performing flight UL-306 from Colombo (Sri Lanka) to Singapore (Singapore), was enroute and climbing through FL340 over the Indian Ocean in Indonesian Airspace when the crew received indication of the F/O anti-ice systems having failed together with a Pitot Standby message. The crew worked the related procedures, contacted dispatch and continued the flight. After passing the ETOPS exit point the aircraft dropped into Alternate Law with autopilot and autothrust off, NAV ADR disagree and unreliable airspeed. The crew worked the related ECAM procedures and used the unreliable airspeed procedures, declared PAN PAN and requested a block altitude between FL330 and FL350 and received a block clearance between FL300 and FL350. While maintaining FL330 at 280 KIAS the crew received an overspeed and a stall warning. The crew performed the stall recovery procedure, declared Mayday and requested vectors to Medan (Indonesia), where the aircraft landed safely on runway 23.

Sri Lanka's CAA reported the aircraft had been dispatched under Minimum Equipment List requirements with the first officer's pitot heater inoperative. The occurrence was rated a serious incident and is being investigated by Sri Lanka's CAA.
Incident Facts

Date of incident
Jun 5, 2025

Classification
Incident

Airline
Srilankan Airlines

Flight number
UL-306

Departure
Colombo, Sri Lanka

Destination
Singapore, Singapore

Aircraft Registration
4R-ABM

Aircraft Type
Airbus A320

ICAO Type Designator
A320

This article is published under license from Avherald.com. © of text by Avherald.com.
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