Just got a "service Letter in the mail from Parker. Dated Feb 15,
2008 It states that "All Parker/Airborne engine driven air pumps are
beyond their mandatory replacement time and must be removed from
services"

Bascally they are saying that if you have a Parker/Airborne Vac Pump
that its toast, remove it before the next flight. Now I dont, mine is
a Garwin wet unit, but this seems like this is either a blanket get
out of jail liability card or one hell of a way to make some money.
The letter goes on to say that they realize that owners have a choice
of using a new or overhauled unit but "owners/pilots must be aware of
the increased risk of pneumatic system failure when using overhauled
or reconditioned pumps. An overhauled/reconditioned Parker/Airborne
pump MUST NOT be used"

If this service letter represents a real SB then people would be nuts
to support these yahoos by buying another Parker pump product.