Boeing chief executive Dennis Muilenburg states the company has conducted 96 flights testing the application upgrade to an anti-stall attribute on the 737 MAX that has been connected to two fatal accidents in the previous six months.
The software upgrade to the Maneuvering Characteristics Augmentation System (MCAS) has been in development since a Lion Air 737 MAX 8 plunged into the Java Sea soon after it took off from Jakarta in October 2018.
Back in March 2019, an Ethiopian Airlines 737 MAX 8 with 157 passengers on board crashed minutes later it took off from Addis Ababa.
Boeing has confessed the MCAS attribute was triggered in response to angle of attack data in the Ethiopian Airlines and Lion Air tragedies, following the publication of the preliminary report into the Airlines accident.
In late March, Boeing held a technical briefing using 200 aviation specialists , including regulators and airline clients of the 737 MAX, to explain the software upgrade.
And since then, the business has also visited the China, Singapore and the United Kingdom for additional meetings with pilots and regulators.
Muilenburg, who had been on board a test flight in ancient April , said the application upgrade has served “ as designed”.
“ Overall, our staff has turned 96 flights totaling a tiny over 159 hours of air time using the upgraded applications, ” Muilenburg said at the George W. Bush Presidential Center Forum on Leadership in Dallas on Thursday (US time), in accordance with a transcript published about the Boeing website.
“ They will conduct additional test and production flights within the forthcoming weeks as we consistently demonstrate that we’ ve identified and met all certification requirements.
“ We look forward to finishing landmarks on the road to certificate. ”
Boeing has explained before the applications upgrade added additional layers of protection from incorrect data out of the aircraft’ s angle of attack (AOA) sensors.
This included having inputs are compared by the flight control system . If there was a significant disagreement — by 5. 5 degrees or more with the flaps retracted — the MCAS wouldn’t activate and a sign of the flight deck would alert the pilots, in accordance with Boeing.
Boeing said “ than could be counteracted by the flight team pulling back to the column & rdquo stabilizer input can never be commanded by MCAS;.
“ The pilots will continue to always have the chance to reevaluate MCAS and manually control the airplane, ” Boeing said on its website.
“ These updates decrease rsquo & the team; s workload in non-normal flight scenarios and prevent data. ”
Concerning pilot instruction, Boeing said it had upgraded the computer-based practice to accompany the applications upgrade.
The airframe has additionally paused deliveries and is diminishing the production speed of the 737 program to 42 aircraft per month, from 52 aircraft per month previously. The decrease production speed was due to happen in mid-April .
— Michael Graham (@MikeGrahamLS) April 11, 2019
Muilenburg, with been at Boeing far more compared to 30 years, described the past couple of months as “ the many populous ” of his career.
“ Our values are at the core of things we do. However, we all understand we could always be better, along with the recent injuries have intensified our commitment to constant improvement as we design, construct and encourage the safest airplanes in the sky, ” Muilenburg said.
VIDEO: Boeing chief executive Dennis Muilenburg’ s speech at the Forum on Leadership from the George W. Bush Presidential Center’ s YouTube channel .