Your original Airspeed Indicator was PN 169-380048-7. This was probably
superseded by either of the two units used in the 1978 and later C24Rs; PN
169-380097-1 (standard Airspeed Indicator) and the optional EA5174-101T-BEC
(the True Airspeed Indicator). None of these units show up in the RAPID
parts inventory; and even if they did, they would be in the $500 range.

I'll assume that your A&P has capped the air lines, and is certain that you
have a leak inside the gauge itself. He should also have removed and
reinstalled the air line nipples on the back of the instrument, to make sure
that the threads aren't leaking. Another reported source of air system
leaks on Sierras has been the gear safety airspeed switch.

If all that has been done, and you need an overhaul or replacement
instrument, I would start by calling Gardner Aviation, 866-486-6061. Here
is their link:

http://www.gardneraviation.com/inside.html

Gardner has provided special offers to BAC during the Falcon Field fly-ins
(KFFC, just southwest of Atlanta). I had them do my last IFR certification,
and plan to have them do my next one as well. While they had the panel
open, I had them recondition a couple of my instruments that had fogged
lenses. They did an excellent job on everything, and for a very reasonable
price.

Two other reported shops are Rudy Instrument repair in Rudy AR (I have no
phone number), and Kansas Instruments (888-603-5477). The latter has
received many good references, and one bad one that I know of. They redid
one owner's airspeed with the wrong face ranges, and had to re-do it. They
also missed their turnaround time estimates on both turns. All their other
references have been good, so this may have just been an unfortunate quirk.

Please let me know how you make out on this, so we can update the BAC
reference material.


-----Original Message-----
From: bac-mail-bounces@beechaeroclub.org
[mailto:bac-mail-bounces@beechaeroclub.org] On Behalf Of Pdblauner@aol.com
Sent: Friday, November 18, 2005 7:17 PM
To: bac-mail@beechaeroclub.org
Subject: [BAC-Mail] Sierra Airspeed indicator

A recent IFR cert uncovered a pitot static system leak traced to the
airspeed indicator.

My mechanic says that a replacement unit is unavailable and recommends
rebuilding the existing one. Anyone have a comparable experience or
helpful
suggestion?
_______________________________________________
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