AD NUMBER: 2007-16-11
SUBJECT: Airworthiness Directive 2007-16-11 SUMMARY: The FAA is
adopting a new airworthiness directive (AD) for certain Fokker
Model F27 Mark 050 airplanes equipped with Dowty Type R.352 or
R.410 series propellers.
This AD requires checking the maintenance records to determine
whether Minnesota Mining and Manufacture Co. (3M )1300L adhesive
was used to attach the de-icer assembly overshoes (boots) to the
propeller blades, repetitive inspections of affected boots, and
replacing boots attached with defective adhesive.
This AD results from three events of propeller blade de-icer
assembly boots debonding and detaching during flight. This
condition was caused by using 3M 1300L adhesive to attach the boot
to the propeller blade.
We are issuing this AD to detect and correct boots attached with
defective adhesive, which could result in debonding and separation
of a boot from the airplane, consequent reduced structural
integrity of the airplane, and possible injury to passengers and