on Pan Am's B 727-2x fleet
Pan Am has modified its fleet to meet with
Flight Aviation Regulation requirements on Stage 3 noise limits. In layman's
terms, the planes are less noisy and help to improve conditions of those
living near our destinations. A few modifications to the airplane can be
seen when you look at our airplanes while getting ready for boarding.
Winglets at the little vertical piece at the
tip of the wing. They have the Pan Am globe painted on them and are apparent
even from a distance. The modification helps to decrease wing drag by cutting
down on the vortex created by airflow around the wing. This helps with
both the noise and the fuel efficiency. The winglets not only look cool,
but help with fuel economy and noise.
|The engines have been outfitted with special
parts and kits that further reduce the noise of the engine. They act almost
like a automobile muffler in their function, though they are physically
and mechanically very different. These hush kits contain parts that cannot
be seen from the ground, but a few of the various kits do contain parts
visible from the ground. These look like little stove grills attached to
the back of the engine. They manipulate the airflow of the exhaust to reduce
engine noise. The interior components do similar functions and are not
visible from the ground.