AD FAA-2012-0189

We are adopting a new airworthiness directive (AD) for certain BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ airplanes. This AD was prompted by a report of a crack found on the left-hand sidewall well on the nose landing gear (NLG). This AD requires performing a repetitive high frequency eddy current inspection of the stiffeners on the left-hand sidewall on the NLG bay for cracks, and repair or replace the sidewall if necessary. We are issuing this AD to detect and correct failure of the sidewall, which could result in consequent in-flight rapid decompression of the cabin and injury to the passengers.