Airworthiness Directive · Amendment 39-14954 · Bombardier Model DHC-8-102, -103, and -106 Airplanes; and Model DHC-8-200 and DHC-8-300 Series Airplanes
Bombardier Model DHC-8-102, -103, and -106 Airplanes; and Model DHC-8-200 and DHC-8-300 Series Airplanes
This AD applies to Bombardier Model DHC-8-102, -103, and -106 airplanes, and Model DHC-8-200 and DHC-8-300 series airplanes, certificated in any category; serial numbers 003 through 606 inclusive.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-100 (as described above), DHC-8-200, and DHC-8-300 series airplanes. This AD requires doing a one-time inspection for damage of the electrical cable harness assembly located on the left and right wing root-to-fuselage aft seal, and repair if necessary; and reworking the fuselage aft seal assembly (left and right) to create a clearance between the electrical cable assemblies and the edge of the fairing panel. This AD results from a report that an airplane encountered an uncommanded propeller feathering during climb, which resulted in an emergency landing. We are issuing this AD to prevent chafing or grounding of the wiring against the aft seal assemblies, which, if not corrected, could interrupt the operation of various systems, including the propeller feather control, alternating current (AC) electrical power, and standby hydraulic power, and result in reduced controllability of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 6,000 flight hours after the effective date of this AD, do the actions specified in paragraphs (f)(1) and (f)(2) of this AD. Do all actions in accordance with Bombardier Service Bulletin 8-24-83, Revision A, dated August 2, 2005. The actions in paragraph (f)(1) of this AD must be done before the rework in paragraph (f)(2) of this AD.
Note 1: Bombardier Service Bulletin 8-24-83, Revision A, contains the instructions for incorporating Bombardier Modification Summary Package 8Y122031, Revision B, dated December 2, 2004. (The technical content of Bombardier Modification Summary Package IS8Q2400005, Revision C, dated January 7, 2005, is equivalent to Bombardier Modification Summary Package 8Y122031, Revision B.)
(1) Do a general visual inspection for damage of the electrical cable harness assembly located on the left and right wing root-to-fuselage aft seal. If any damage is found, repair the damage before further flight.
(2) Rework the fuselage aft seal assembly (left and right) to create a clearance between the electrical cable assemblies and the edge of the fairing panel.
Note 2: For the purposes of this AD, a general visual inspection is: “A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to ensure visual access to all surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.”
Actions done before the effective date of this AD in accordance with Bombardier Service Bulletin 8-24-83, dated December 23, 2004, are acceptable for compliance with the corresponding requirements in paragraph (f) of this AD.
