NTSB Safety Warning on Boeing 737s Involving Impaired Rudder Controls
NTSB Raises Alarm Over 737 Rudder System Issues
The National Transportation Safety Board (NTSB) has issued an urgent safety recommendation regarding certain Boeing 737s following a serious incident at Newark Liberty International Airport in February 2024. Flight controls were compromised due to a jam in the rudder pedals of a United Airlines 737 MAX 8. Investigations indicated that the malfunction was linked to defective Collins Aerospace SVO-730 rudder rollout guidance actuators.
Background of the Incident
During landing, the captain of the flight reported that the rudder pedals failed to respond normally. Post-incident tests revealed that the actuator function was severely compromised following exposure to cold conditions, raising concerns about moisture entering through improperly assembled bearings. The NTSB's findings prompted urgent action from both Boeing and the FAA.
- Safety Risks: The NTSB cautions about the significant risk these defects pose, especially under critical flying conditions such as high crosswinds or engine failures.
- Boeing's Response: Boeing has acknowledged the issue, successfully removing the affected actuators from certain US-registered aircraft.
NTSB Recommendations
In light of these events, the NTSB has issued two urgent recommendations to Boeing and two to the FAA, urging immediate action to ensure the safety of flying operations involving the affected 737 fleet. The recommendations emphasize the need for improved procedures for crew response during incidents of rudder system failures.
- Boeing must determine suitable alternative responses for crew during jammed rudder scenarios.
- Boeing is also tasked with notifying operators of potential moisture accumulation in actuators.
This article was prepared using information from open sources in accordance with the principles of Ethical Policy. The editorial team is not responsible for absolute accuracy, as it relies on data from the sources referenced.