Superseded. This AD was superseded by AD 2020-24-02. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2018-23-51
Effective 12/21/2018 · Published 12/06/2018
Airworthiness Directives; The Boeing Company Airplanes
Summary
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-8 and -9 airplanes. This emergency AD was sent previously to all known U.S. owners and operators of these airplanes. This AD requires revising certificate limitations and operating procedures of the airplane flight manual (AFM) to provide the flight crew with runaway horizontal stabilizer trim procedures to follow under certain c…