A Ryanair flight from Venice to Manchester was forced to divert to London Stansted after fuel sprayed from the right engine mid-flight, with an AAIB investigation finding pilots were slow to diagnose the leak and increased fire risk during landing
A Manchester-bound aircraft was compelled to make an emergency diversion before running out of fuel as gallons poured from the engine following a fault mid-flight.
An investigation was initiated into the incident by the Air Accident Investigations Branch after the Ryanair flight on April 25 last year. The report, released today (April 9), stated the flight from Venice to Manchester had to divert to London Stansted at approximately 1pm.
This came after a fuel leak, which also heightened the risk of a fire upon the aircraft’s landing. The plane was met by fire crews on the runway who discovered there had been a leak from the right engine.
The journey had to be curtailed with an emergency diversion to London amid concerns about fuel leaking from the main tank.
The AAIB investigation discovered that the pilots aboard the Boeing 737 Max were tardy in recognising the possibility of a fuel leak, and also heightened the likelihood of a fire by deploying thrust reversers to decelerate the plane during landing and failing to shut down the right engine, reports the Manchester Evening News.
Investigators have determined this would have scattered leaking fuel around hot components of the engine, further raising the prospect of a fire breaking out.
The Ryanair flight had initially been delayed by one hour due to a company computer system failure. During this time, the report found that the pilots observed a fuel imbalance developing between the main fuel tanks, prompting them to carry out a fuel balancing procedure.
Once the aircraft reached its cruising altitude of 38,000 feet, the commander spotted the fuel imbalance recurring and continued to cross-feed fuel into the affected right engine.
Approximately 20 minutes later, the pilots noted the right fuel tank was running low once more, with an imbalance of around 100kg every 10 minutes – a clear indication of a fuel leak.
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The flight, carrying 191 passengers, was subsequently diverted to Stansted Airport. According to the report, the pilots opted against shutting down the affected engine, citing favourable weather conditions and the relatively short diversion time of around 20 minutes.
The aircraft touched down safely, with no injuries sustained and no damage to the plane. The AAIB later concluded in their report that had the crew continued to follow emergency procedures, they would have been directed to shut off the engine in order to eliminate the risk of fire.
The report stated: “In completing fuel balancing from memory, the pilots did not consider the possibility of a fuel leak, delaying diagnosis of the problem. Once the leak was confirmed, they decided not to fully complete the non-normal checklist, which directed them to shut down the affected engine.
“The subsequent use of thrust reverse on landing increased the potential risk of fire due to disbursement of fuel vapour around hot parts of the engine.”
In a statement Ryanair confirmed it had “fully participated” in the investigation, adding that the report contained no safety recommendations directed at the airline.










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