Transport Canada issues emergency AD on RegionalJet landing gear extension problems

October 19, 2010

Transport Canada issued an emergency airworthiness directive (EAD CF-2010-36) for several models of the Canadair / Bombardier RegionalJet following main landing gear extension problems.

Transport Canada reports two cases of main landing gear (MLG) failure to fully extend on CRJ aircraft.  Preliminary investigation has shown that interference between the MLG door and the MLG fairing seal prevented the MLG door from opening. This directive mandates the inspection and rectification, as required, of the MLG fairing and seal, MLG door, and adjacent structures.

Affected are the following models:

  • CL-600-2C10 (CRJ-700 series), serial numbers 10003 and subsequent
  • CL-600-2D15 (CRJ-705 series)
  • CL-600-2D24 (CRJ-900 series), serial number 15001 and subsequent

The AD does not specify the two occurrences, but one of those was probably an incident that occurred on September 25, 2010 involving an Atlantic Southeast Airlines CRJ-900. The airplane landed on at New York-JFK with the right MLG fully retracted.


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