He said that in the last 20 years his airline had replaced only three.

In addition, the aviation agency will require airlines to replace older model X-ray and metal detectors with new, more capable models.

In addition, the airlines are replacing pilots who are nearing the mandatory retirement age of 60.

The country's state-owned airline is replacing its entire fleet with the purchase.

Brazil's largest airline, Varig, replaced its president in a shake-up intended to return the carrier to profitability.

In major maintenance work, airlines routinely replace some of the insulation blankets on the planes, often because mechanics have damaged them in other repairs.

The agency wants airlines to replace wiring in a place where wires enter the tank.

Because of this, some airlines replaced the 727 with the 737-800 or the Airbus A320.

From about 1970, the airline replaced its fleet with Boeing 720 aircraft.

At the same time, the number of airplanes the F.A.A. handles is up, as the airlines replace big jets with small ones.