Summary
We propose to supersede Airworthiness Directive (AD) 2015-22- 06 for all Airbus Model A318, A319, A320, and A321 series airplanes. AD 2015-22-06 currently requires revising the After Start Normal Procedures section of the airplane flight manual (AFM) to provide procedures that address latent failures in the Spoiler and Elevator Computer (SEC). Since we issued AD 2015-22-06, there have been reports that some maintenance messages pointed out the loss of elevator servo control monitoring performed by SEC 1, SEC 2, or both, during the engine start. This proposed AD would add a requirement to install updated SEC software. We are proposing this AD to address the unsafe condition on these products.