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Boeing Statement on AOA Disagree Alert

boieng statement

On every airplane delivered to our customers, including the MAX, all flight data and information needed to safely operate the aircraft is provided in the flight deck on the primary flight deck displays. This information is provided full-time in the pilots’ primary field of view, and it always has been.

Air speed, attitude, altitude, vertical speed, heading and engine power settings are the primary parameters the flight crews use to safely operate the airplane in normal flight. Stick shaker and the pitch limit indicator are the primary features used for the operation of the airplane at elevated angles of attack. All recommended pilot actions, checklists, and training are based upon these primary indicators. Neither the angle of attack indicator nor the AOA Disagree alert are necessary for the safe operation of the airplane. They provide supplemental information only, and have never been considered safety features on commercial jet transport airplanes.

The Boeing design requirements for the 737 MAX included the AOA Disagree alert as a standard, standalone feature, in keeping with Boeing’s fundamental design philosophy of retaining commonality with the 737NG. In 2017, within several months after beginning 737 MAX deliveries, engineers at Boeing identified that the 737 MAX display system software did not correctly meet the AOA Disagree alert requirements. The software delivered to Boeing linked the AOA Disagree alert to the AOA indicator, which is an optional feature on the MAX and the NG. Accordingly, the software activated the AOA Disagree alert only if an airline opted for the AOA indicator.

When the discrepancy between the requirements and the software was identified, Boeing followed its standard process for determining the appropriate resolution of such issues. That review, which involved multiple company subject matter experts, determined that the absence of the AOA Disagree alert did not adversely impact airplane safety or operation. Accordingly, the review concluded, the existing functionality was acceptable until the alert and the indicator could be delinked in the next planned display system software update. Senior company leadership was not involved in the review and first became aware of this issue in the aftermath of the Lion Air accident.

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Approximately a week after the Lion Air accident, on November 6, 2018, Boeing issued an Operations Manual Bulletin (OMB), which was followed a day later by the FAA’s issuance of an Airworthiness Directive (AD). In identifying the AOA Disagree alert as one among a number of indications that could result from erroneous AOA, both the OMB and the AD described the AOA Disagree alert feature as available only if the AOA indicator option is installed.

Boeing discussed the status of the AOA Disagree alert with the FAA in the wake of the Lion Air accident. At that time, Boeing informed the FAA that Boeing engineers had identified the software issue in 2017 and had determined per Boeing’s standard process that the issue did not adversely impact airplane safety or operation. In December 2018, Boeing convened a Safety Review Board (SRB) to consider again whether the absence of the AOA Disagree alert from certain 737 MAX flight displays presented a safety issue. That SRB confirmed Boeing’s prior conclusion that it did not. Boeing shared this conclusion and the supporting SRB analysis with the FAA.

Boeing is issuing a display system software update, to implement the AOA Disagree alert as a standard, standalone feature before the MAX returns to service. When the MAX returns to service, all MAX production aircraft will have an activated and operable AOA Disagree alert and an optional angle of attack indicator. All customers with previously delivered MAX airplanes will have the ability to activate the AOA Disagree alert.

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Korean Air Rolls Out Next-Generation Business Class: ‘Prestige Suites 2.0’

Korean Air Rolls Out Next-Generation Business Class: ‘Prestige Suites 2.0’

Korean Air has introduced its latest business class offering, the Prestige Suites 2.0, set to make its debut aboard the airline’s new Boeing 787-10 Dreamliner fleet.

This new product marks a significant upgrade from the previous Collins Apex forward-facing staggered seats, known as Prestige Suites. The Prestige Suites 2.0 is designed in a staggered 1-2-1 configuration, ensuring each passenger direct aisle access and ample privacy.

The seats offer 46 inches of pitch, 21 inches of width, and can be transformed into a flat bed measuring between 78.2 and 79.2 inches. A standout feature of these seats is the inclusion of privacy doors that stand 52 inches high, offering a more secluded experience even when positioned closer to the aisle.

Tech-savvy travelers will appreciate the suite’s cutting-edge features, which include a 23.8-inch ultra-high-definition entertainment monitor, 60W USB-C charging, AC power outlets, and wireless charging capabilities.

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Moreover, Korean Air’s Boeing 787-10s will be the first in the fleet to offer Wi-Fi, enhancing connectivity for passengers. The new business class seats come with a range of amenities aimed at maximizing comfort and convenience. These include a storage cubby, a handheld remote, USB-C charging ports, and universal outlets.

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The wireless charging pad is a notable highlight, reflecting the suite’s advanced technological integration. The layout of the Prestige Suites 2.0 comprises 10 rows of seats in a 1-2-1 arrangement, specifically rows 7-16 in the business class cabin. The cabin is flanked by lavatories and galleys at both the front and the rear, ensuring easy access for all passengers.

A striking departure from Korean Air’s traditional design, the new seats feature a bold brown color palette. This is a significant change from the airline’s iconic Morning Calm blue and bright white interiors.

The new design incorporates semi-matte deep brown side consoles with metallic tops, brushed coppery-almond cabinet doors, and textured tan interior shrouds, giving the cabin a modern and sophisticated look.

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