Oil leak caused smoke to seep into aircraft
Passengers and pilots had to don oxygen masks and smoke goggles when an oil leak caused smoke to seep into the cockpit and cabin of an airplane minutes after take-off from Dublin Airport, an investigation has found.
The incident occurred on a CityJet flight bound for London on May 22 last year.
The captain made the decision to turn back the Avro RJ-85 jet built in 1999.
The captain told Air Accident Investigation Ireland (AAIU) that, judging by its smell, it was believed the "smoke was oil-based".
An examination found a leak in an oil-supply pipe in one of the engines.
It was discovered that the leak on the diffuser was caused by the fracture of a plate which "welded around the inlet pipe".
"It is probable that the bleed air supplied to the air condition packs was contaminated by oil leaking from the pipe, which in turn led to the smoke and fumes entering the cockpit and cabin," the AAIU report concluded.
The manufacturer informed the investigation that it had no recent records of failed oil pipes and considered the incident to be an "isolated occurrence".
A spokesperson for CityJet told the Irish Independent that the crew reacted in a "safe and professional" manner.
"CityJet is pleased to report that their crew reacted to the onboard incident in a safe and professional manner by completing necessary drills and checklists and returning immediately to Dublin for landing," said the spokesperson.