AD NUMBER: 2008-09-21
SUBJECT: Airworthiness Directive 2008-09-21 SUMMARY: We are adopting a
new airworthiness directive (AD) for the products listed above.
This AD results from mandatory continuing airworthiness information
(MCAI) originated by an aviation authority of another country to
identify and correct an unsafe condition on an aviation product.
The MCAI describes the unsafe condition as: This Airworthiness
Directive (AD) is issued following the discovery of a risk of
chafing between an electrical feeder bundle and a bus bar under the
circuit breaker panel. Most of the time, this possible chafing
would be dormant and would lead to an uneventful loss of
segregation within the different electrical system components.
However,missing segregation combined with additional electrical
failures may impair flight safety. * * * * *Chafing between an
electrical feeder bundle and a bus bar under the circuit breaker
panel could lead to electrical arcing, which could result in smoke
and fire in the cockpit. We are issuing this AD to require actions
to correct the unsafe condition on these products.