CSA A333 near Kazan on Feb 23rd 2019, fuel imbalance

Last Update: February 28, 2019 / 23:20:12 GMT/Zulu time

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Incident Facts

Date of incident
Feb 23, 2019

Classification
Incident

Flight number
OK-190

Aircraft Registration
OK-YBA

Aircraft Type
Airbus A330-300

ICAO Type Designator
A333

A CSA Czech Airlines Airbus A330-300, registration OK-YBA performing flight OK-190 from Prague (Czech Republic) to Seoul (South Korea) with 268 people on board, was enroute at FL370 about 50nm northwest of Kazan (Russia) when the crew decided to turn around and return to Prague after observing a fuel imbalance. The crew worked the related checklists, descended the aircraft to FL360 for the return, later FL260 and FL160 and landed safely on Prague's runway 24 about 3 hours after the decision to return.

A runway inspection found fuel on the runway, the runway needed to be temporarily closed for cleanup. A leak at the left hand engine (PW4168) was discovered.

The airline reported a technical defect prompted the crew to return to Prague. As the aircraft has no fuel dump system the crew decided to burn off fuel and return.

Czechia's UZPLN is looking into the occurrence to determine whether an investigation will be opened.

On Feb 28th 2019 The Aviation Herald learned the fuel leak was a faulty seal at the fuel oil heat exchanger (FOHE) causing a loss of about 900kg fuel per hour.

On Feb 28th 2019 the airline reported a faulty seal at the FOHE caused the fuel leak. The aircraft returned to service on Feb 28th after a spare part, available only in the US, has been taken to Europe.
Incident Facts

Date of incident
Feb 23, 2019

Classification
Incident

Flight number
OK-190

Aircraft Registration
OK-YBA

Aircraft Type
Airbus A330-300

ICAO Type Designator
A333

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