Federal Aviation Administration April 14, 2016 – Federal Register Recent Federal Regulation Documents

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440), CL-600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. This proposed AD was prompted by reports of undesirable changes in the Reference Airspeed (RAS) Bug, occurring during flight without pilot input. This proposed AD would require replacing the flight control computer (FCC). We are proposing this AD to prevent uncommanded pitch changes, which could result in deviation from a safe flight path.

We propose to supersede Airworthiness Directive (AD) 2012-20- 07, for certain Airbus Model A318, A319, A320, and A321 series airplanes. AD 2012-20-07 currently requires revising the airworthiness limitations section (ALS) of the instructions for continued airworthiness (ICA) to incorporate new limitations for fuel tank systems, and revising the maintenance program to incorporate revised fuel maintenance and inspection tasks. Since we issued AD 2012-20-07, Airbus has issued more restrictive maintenance requirements and/or airworthiness limitations. This proposed AD would require revising the maintenance or inspection program to incorporate revised fuel airworthiness limitations. We are proposing this AD to prevent the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.