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SERVICE
BULLETIN #49 DATE:
May 1, 1997 SUBJECT:
Rotax 912 exhaust systems APPLICABILITY:
All 912 powered Kitfox's COMPLIANCE:
Mandatory Inspection FROM:
SkyStar Aircraft Engineering Hundreds
of exhaust systems are in use on the 912 Rotax and have accumulated
many thousands of hours of trouble free service. We have recently
received one report of a failed weld that caused a header pipe to
separate. Prior
to continued operation of your aircraft, inspect the exhaust system
carefully for any cracks which may have developed. If you discover any
cracks, DO NOT operate the aircraft until repairs have been made or a
replacement part has been installed. If
no cracks are found upon inspection, be certain to add careful
inspection of the exhaust system to the list of items to be checked
during the pre-flight inspection of the aircraft. Leaks
in the exhaust system should always be considered a hazard which
should warrant grounding of the aircraft. Not only can they be a
potential source of a fire under the cowl, but they also pose a threat
to the individuals on board the aircraft because of potential carbon
monoxide poisoning if the leaking gases should pass into the cockpit. As
the operator of this aircraft, be certain to be vigilant for the signs
of carbon monoxide poisoning. All passengers should also be advised of
the dangers. Carbon monoxide is a colorless, odorless, tasteless gas
which is a by-product of the combustion of gasoline. Even low quantities
when breathed over a period of time can be deadly. Onset of carbon
monoxide poisoning is insidious and may include such symptoms as a
headache, blurred thinking, dizziness, and a general feeling of
uneasiness. Use
of a carbon monoxide indicator (which may be purchased through most
aircraft equipment retailers or our Customer Service department) is
recommended in addition to being watchful for the above symptoms. If it
is suspected that carbon monoxide is leaking into the cockpit, open the
fresh air vents and land the aircraft at the nearest airport. If
you find cracks in your exhaust system, please contact our Customer
Service department at 208-454-1443 to order a replacement. |
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