Airworthiness Directive · Amendment 39-12393 · Boeing Model 737-600, -700, and -800 Series Airplanes
Boeing Model 737-600, -700, and -800 Series Airplanes
Model 737-600 and -700 series airplanes, line numbers 1 through 908 inclusive; and Model 737-800 series airplanes, line numbers 1 through 455 inclusive; certificated in any category.
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 737-600, -700, and -800 series airplanes. This action requires repetitive inspections for corrosion or cracking of the keel beam splices, and corrective action, if necessary. This action also provides an optional terminating action for the repetitive inspections. This action is necessary to find and fix corrosion or cracking of the keel beam splices, which could result in failure of the keel beam and consequent failure of the forward fuselage of the airplane. This action is intended to address the identified unsafe condition.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
