Citing its preliminary investigation of a Nov. 6, 2019, incident involving an Embraer 175, the U.S. National Transportation Safety Board (NTSB) has issued safety recommendations to address problems associated with wire chafing, the pitch trim switch and memory items in the checklist used by the pilots in dealing with the incident.
In the incident, the crew of Republic Airways Flight 4439 reported a flight control issue related to the airplane’s pitch trim and declared an emergency after takeoff from Hartsfield-Jackson Atlanta (Georgia, U.S.) International Airport. They returned to the airport and landed safely.
The NTSB’s preliminary investigation found chafing on the wires that connect the horizontal stabilizer actuator control electronics and the captain’s pitch trim switch and autopilot/trim disconnect button. The NTSB said in a statement issued Wednesday that the chafing resulted from …
