SERVICE
BULLETIN #46
DATE:
May 1, 1997
SUBJECT:
Rotax 912 exhaust system from Aero Designs
APPLICABILITY:
All 912 powered Pulsar I Aircraft
COMPLIANCE:
Mandatory Inspection
FROM:
SkyStar Aircraft Engineering
Since
SkyStar acquired the Pulsar line of aircraft, it has been brought to our
attention that the exhaust system which was previously supplied by Aero
Designs for Rotax 912 engines for the Pulsar I may develop cracks over a
period of time. We have developed a lightweight stainless steel exhaust system
to replace the original Aero Designs mild steel system.
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 exhaust
system 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.