AD NUMBER: 2009-06-18
SUBJECT: Airworthiness Directive 2009-06-18 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: Following in-flight
test deployments on CL-600-2B19 aircraft,several Air-Driven
generators (ADGs) failed to come on-line. Investigation revealed
that, as a result of a wiring anomaly that had not been detected
during ADG manufacture, a short circuit was possible between
certain internal wires and their metallic over-braided shields,
which could result in the ADG not providing power when deployed.
The unsafe condition is that failure of the ADG could lead to loss
of several functions essential for safe flight. We are issuing this
AD to require actions to correct the unsafe condition on these