> The crew subsequently declared emergency advising they had no autopilot trim and no electrical trim system on their brand new aircraft and needed to trim the

> The crew subsequently declared emergency advising they had no autopilot trim and no electrical trim system on their brand new aircraft and needed to trim the aircraft manually I would assume the bigger problem was loss of the electrical trim system. From what I understand, manually trimming a 737 (or any large commercial jet) is a physically demanding task, even with both crew members doing it in tandem. That will add a lot of workload to the pilots that could cause further delay in reacting to new problems as they arise, and there's always the chance that can happen. When a malfunction like this occurs, it is absolutely safest to land as soon as possible so the issue can be assessed on the ground, especially when relevant failure checklists or company policies indicate it.