Service Letter
Letter No. 034 Issue Date: Aug. 25, 2009
HA-6 SERIESACCELERATOR PUMP PLUNGER
INTRODUCTION:
Volare’ Carburetors, LLC (formerly Precision Airmotive/ Facet/
Marvel Schebler/ Borg Warner) issuedFlight Safety Service Bulletin
SB-3 on Feb. 6, 2009, the subject of which is “HA-6 Accelerator
PumpPlunger” regarding the inspection of pump plunger retaining
clips and replacement thereof. The servicebulletin lists several
conditions where the Accelerator Pump Plunger stem groove and body
is extremelyworn. From all appearance the assemblies shown were
those used well beyond any reasonable overhaul.The Volare’ Service
Bulletin continues to describe in detail the exact condition.
However, in unitsoverhauled/repaired by Kelly Aerospace Power
Systems, the Accelerator Pump Plunger and associatedparts are
replaced 100% with FAA/PMA approved parts of KAPS design. The
Accelerator Pump Plungersdescribed and shown in Volare’ SB-3 are
severe cases which reflect reuse or lack of overhaul and not
acondition seen in KAPS overhauled units. KAPS never repairs or
reuses the Accelerator PumpPlunger or clips in our overhauls. We
have and continue to use FAA/PMA metal floats. For
thisreason,Volare’ Service Bulletin SB-3 is not applicable to HA-6
carburetors overhauled or repairedby KAPS at any time.
Kelly Aerospace Power Systems desires that Volare’s Flight
Safety Service Bulletin SB-3 be complied withto enhance safety in
those aircraft or rotorcraft that use HA-6 carburetors other than a
KAPS overhauledor repaired HA-6 carburetor and advise those
customers to follow the instructions therein as required.However,
KAPS considers Volare ”SB-3 “not applicable” to any HA-6
carburetors previously overhauled orrepaired by KAPS. Removing and
repairing a carburetor or disturbing it’s installation without
symptom orcause may result in a similar or greater hazard than the
potential hazard pointed out in Volare’s SB-3.
This service letter is intended to reduce confusion for
customers utilizing KAPS overhauled HA-6carburetors. If you have a
HA-6 carburetor with a clear history of overhaul/repair by Kelly
Aerospace PowerSystems, no action need be taken regarding Volare’s
Service Bulletin SB-3.
COMPLIANCE:
As per the compliance time stated in Volare’ Flight Safety
Service Bulletin SB-3. Compliance with thisService Letter for KAPS
overhauled carburetors, renders Volare’ Service Bulletin SB-3 not
applicable.
EFFECTIVITY:
All HA-6 carburetors overhauled/repaired at any time by Kelly
Aerospace Power Systems.
All questions, information, or requests pertaining to flight
safety service bulletin SB-3 must be forwarded toVolare’
Carburetors, LLC, Product Support Dept. (336) 449-5054.
Questions regarding this service letter? Contact KAPS Customer
Service at (334) 286-8551.
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PROCEDURE:
CAUTION:The removal of an airworthy part from a complete
installation without symptom orcause may present a hazard to
owners, operators, and property. Beyond normalmaintenance, NEVER
open or disturb the carburetor without documented cause.
NOTE:Any repair or overhaul activity may be accomplished using
Kelly AerospacePower Systems FAA/PMA approved components and spare
parts. All KAPSFAA/PMA approved parts are interchangeable with
Precision Airmotive/ Facet/Marvel Schebler/ Borg Warner original
parts.
1. Observe Volare’ Carburetors SB-3 in it’s entirety and
determine if you are affected, the appropriatecompliance time, and
what may be your course of action. (Noted as Attachment A of this
service letter.)
2. Examine the aircraft or engine logbook entries or other
aircraft documentation to ascertain whetheryour carburetor has been
overhauled by KAPS. If positive identification is made, it is
advisable to makean appropriate logbook entry stating that “Volare’
Carburetors, LLC Service Bulletin SB-3 is notapplicable, refer to
Kelly Service Letter 034.
3. If positive identification can not be made, comply with
Volare’ Carburetors Service Bulletin SB-3 byfollowing the
instructions therein. Assure a proper logbook entry of compliance
is made per theinstructions in the Volare’ Service Bulletin. If you
decide to comply with Volare’ Carburetors, LLCSB-3, it should be
noted that Volare’ SB-1 requires that any “unauthorized” part in
the carburetor orpart which cannot be identified, must be replaced
using only Volare’ Carburetors, LLC parts.Remember, the use of KAPS
FAA/PMA approved parts in the applicable application in your
carburetoris an FAA approved alternative to such replacement. KAPS
brass floats of the applicable part numberare fully approved by the
FAA for use in HA-6 carburetors.
For reference, please see the Volare’ Carburetors, LLC Service
Bulletin SB-3 included as “Attachment A”to this service letter. For
information concerning the use of KAPS FAA/PMA parts refer to
KAPSService Letter 028 and FAA SAIB NE-08-40 dated Aug. 8,
2008.
WARRANTY STATEMENT:
No warranty or other participation is applicable to this service
publication. Acknowledgment andunderstanding of this service letter
is fully the responsibility of the service facility and/or the
owner of theaffected product. Issuance of this service letter in no
way constitutes an implied or expressed warranty ofany kind.
This publication does not imply or state any responsibility for
the workmanship of any person or entityperforming work or
maintenance on any model carburetor, fuel system, engine, or
aircraft. The properuse of FAA/PMA approved airworthy parts in no
way constitutes a total waiver of liability for anyparty. All
parties retain liability, including product liability to the extent
of their responsibilities underapplicable law.
CONTACT INFORMATION:
If you have any questions concerning this service information
letter, please contact Kelly Aerospace PowerSystems Technical
Support at 888-461-6077. Or write:
Kelly Aerospace Product Support1404 East South Blvd.Montgomery,
AL 36116, USA
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