Mind the last line of the AD:
"
We are also issuing this AD to prevent a lower-than-optimal climb gradient during takeoff, and consequent failure to clear obstacles on the ground during a performance-limited takeoff."
The
docket states:
"
The Boeing Company has also discovered during flight simulations that the climb gradient is less than optimal for obstacle clearance during a one-engine takeoff (performance-limited) situation. This is caused by an error in the pitch command law of the autopilot flight director computer (AFDC). This condition, if not corrected, could result in a lower-than-optimal climb gradient during takeoff, and consequent failure to clear obstacles on the ground during a performance-limited takeoff."
...
"
Because an unsafe condition exists that requires the immediate adoption of this AD, we find that notice and opportunity for prior public comment hereon are impracticable and that good cause exists for making this amendment effective in less than 30 days."
Interesting ..