A Lockheed Martin F-35 aircraft is seen at the ILA Air Show in Berlin, Germany, April 25, 2018. REUTERS/Axel Schmidt

The Israeli Air Force announced a temporary halt in its stealth fighter F-35 aircraft activity on Saturday, following US concerns over defects in pilot ejection systems.

Aircraft will undergo inspections that will last a few days, the Israeli Air Force said on Twitter, and any individual F-35 operations will be conducted by special authorisation of the air force chief.

The Israeli announcement followed a US notice on Friday of possible defects in the explosive cartridges in pilot ejection systems aboard three US military aircraft, including the F-35, which forced a temporary halt to some US operations.

Manufactured by Lockheed Martin Corp, the F-35 is also known as the Joint Strike Fighter and, in Israel, by its Hebrew name “Adir” (Mighty).