I was going to say, I do not recall a PBA although there is a Pitch Boost
Actuator which does nothing but dampen the feedback in the pitch axis much
like a shock absorber. However the thing does no offensive work at all like
the collective boost actuator.

Fred

"B2431" wrote in message
...
Take a look at the Puzzle Palace aka the Pentagon. There are people there
who
have no concept of reality.

Next, take a look at the aquistion process. There are no procedures for
asking
contractors to keep things simple.

When we first aquired the UH-60A the Sikorski reps and brochures said that
the
helicopter had been designed with "maintenance in mind." Despite the
pretty
pictures in the brochures and the friendly reps no one ever said that
meant
they intended to make life easy for us. My favourite example was the pitch
bias
actuator. The PBA was a little box about 8 inches long, 2 inches thick and
4
inches wide. The PBA was mounted in the middle of the mixing unit and was
a
bear to replace. It was perpetually failing and was ultimately eliminated
with
no noticable change in handling.

Dan, U. S. Air Force, retired