Airworthiness Directive · Amendment 39-14045 · Boeing Model 737-600, -700, -800, and -900 Series Airplanes
Boeing Model 737-600, -700, -800, and -900 Series Airplanes
Superseded. A later AD replaced this one: AD 2012-21-08. Comply with the one in force.
This AD applies to Boeing Model 737-600, -700, -800, and -900 series airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin 737-22A1164, dated May 20, 2004.
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -800, and -900 series airplanes. This AD requires installing and testing an updated version of the operational program software of the flight control computers. This AD is prompted by a report of an airplane pitching up with rapidly decreasing indicated airspeed after the flightcrew set a new altitude into the autopilot. We are issuing this AD to prevent anomalous autopilot operation that produces a hazardous combination of airplane attitude and airspeed, which could result in loss of control of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 12 months after the effective date of this AD, install and test an updated version of the operational program software of the enhanced digital flight control system (EDFCS) flight control computers (FCCs), in accordance with Boeing Alert Service Bulletin 737-22A1164, dated May 20, 2004.
