Airworthiness Directive · Amendment 39-18992 · Electrical power
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers 4035 through 4347 inclusive.
We are superseding Airworthiness Directive (AD) 2014-20-09, which applied to certain Bombardier, Inc., Model DHC-8-400 series airplanes. AD 2014-20-09 required an inspection for missing clamps that are required to provide positive separation between the alternating current (AC) feeder cables and the hydraulic line of the landing gear alternate extension, and related investigative and corrective actions if necessary. This new AD requires removing airplanes from the AD applicability. This AD was prompted by reports of missing clamps that are required to provide positive separation between the AC feeder cables and the hydraulic line of the landing gear alternate extension. We are issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (g) of AD 2014-20-09, with revised service information having a reduced Effectivity. Within 6,000 flight hours or 36 months after November 7, 2014 (the effective date of AD 2014-20-09), whichever occurs earlier: Do a general visual inspection for correctly installed clamps between the AC feeder cables and hydraulic line, and do all applicable related investigative and corrective actions, in accordance with paragraph 3.B., “Procedure,” of the Accomplishment Instructions of Bombardier Service Bulletin 84-24-53, Revision B, dated September 10, 2015. Do all applicable related investigative and corrective actions before further flight.
