Flight operations may be disrupted as aviation unions have declared an indefinite strike in the Nigeria Civil Aviation Authority (NCAA).

Daily Trust reports that the industrial action was scheduled to begin by 5:00am on Wednesday.

According to the unions’ in a notice issued on Tuesday, the action followed the expiration of the seven-day ultimatum earlier issued to the Federal Ministry of Transportation (Aviation) and the NCAA.

Daily Trust reports that the unions had threatened to shut down the sector over the present management structure (organogram) of the NCAA which they argued stifles career progression.

The notice of strike came a few days after the Minister of State for Aviation, Senator Hadi Sirika, appealed to the unions to embrace dialogue on the issue rather than shutting down the sector, saying the organogram could be “tweaked”.

The unions include the National Union of Air Transport Employees (NUATE), the Air Transport Services Senior Staff Association of Nigeria (ATSSSAN), Association of Nigeria Aviation Professionals (ANAP) and the National Association of Air Transport Pilots and Employees (NAAPE).