A number of S-92 helicopter parts used in the North Sea have been returned to their manufacturer for further checks.
The move comes after a global recall by Sikorsky.
They manufacturer issued an Air Service Bulletin (ASB) calling for additional checks to be made on S-92 vehicles.
Sikorsky said more than 250 aircraft had been inspected since the ASB had been issued.
Helicopter parts from a number of aircraft have now been returned for further inspection.
A spokeswoman for Sikorsky said:“Physical inspections of the tail rotor pitch change shaft bearing are well underway with over 250 aircraft inspected.
“Sikorsky has been reviewing HUMS data from those aircraft as well. A small number of parts are being returned to Sikorsky for additional evaluation.
“These findings do not constitute failure of the bearing and are being returned to Sikorsky for further evaluation.
“Sikorsky continues to work closely with our supply chain on replacement parts and is coordinating those activities with our Customers.”
A total of 31 aircraft had to be returned to base for checks to be carried out last week.
It was in response to an incident which is currently being investigated by the Air Accident Investigation Branch (AAIB).
A spokesman for Babcock said: “Babcock has completed the required inspections on the whole of its S92A fleet. As a result of the inspection findings, three bearings have been returned to
Sikorsky for evaluation.
“All aircraft are subject to a full testing programme ahead of their return to service.”
HeliOffshore chief executive, Gretchen Haskins ,said: “These inspections are a precautionary measure to ensure safety, the operators are complying with Sikorsky’s Alert Service Bulletin and collaboration across the safety system is progressing well.”
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