12 MARCH, 2019 SOURCE: FLIGHT DASHBOARD BY: MAVIS TOH SINGAPORE
Boeing has confirmed that it will deploy a flight control software upgrade for the 737 Max “in the coming weeks”.
In a statement, the manufacturer says it has been developing the software enhancement in the aftermath of the Lion Air flight JT610 crash, but did not link it to the Ethiopian Airlines 737 Max 8 crash on 10 March.
“This includes updates to the Maneuvering Characteristics Augmentation System (MCAS) flight control law, pilot displays, operation manuals and crew training. The enhanced flight control law incorporates angle of attack (AOA) inputs, limits stabiliser trim commands in response to an erroneous angle of attack reading, and provides a limit to the stabiliser command in order to retain elevator authority,” it details, adding that the upgrade is designed “to make an already safe aircraft safer”.
Boeing adds it has been working closely with the US Federal Aviation Administration (FAA) on the “development, planning and certification” of the software upgrade, which also incorporates feedback from customers. It will deploy the upgrade across the 737 Max fleet in the coming weeks.
The FAA has said that it anticipates mandating the software enhancement through an airworthiness directive no later than April.
“It is important to note that the FAA is not mandating any further action at this time,” adds Boeing.
The FAA said on 11 March that it has not received enough evidence to warrant a grounding of the US fleet of Max aircraft, even as a growing number of aviation regulators around the world ordered a grounding of the type. It disclosed however that it was overseeing Boeing’s changes to the MCAS. In the Boeing statement, the manufacturer also said that the MCAS was implemented on the Max to improve aircraft handling characteristics and decrease pitch-up tendency at elevated angles of attack, adding that the system does not control the aircraft in normal flight but rather improves its behavior in a non-normal part of the operating envelope.
It reiterated that the Max’s flight operations manual already outlines existing procedures to safely handle a situation where there is erroneous data from an AOA sensor. “The pilot will always be able to override the flight control law using electric trim or manual trim,” it adds. Flight ET302 crashed six minutes after takeoff from Addis Ababa enroute to Nairobi on 10 March. The airline has revealed that the pilot “mentioned that he had difficulty” and asked to return to the airport shortly after takeoff. This raised concern about similarities to the JT610 crash on 29 October 2018, which occurred shortly after takeoff from Jakarta.
Ale później wydał takie oświadczenie:
12 MARCH, 2019 SOURCE: FLIGHT DASHBOARD BY: JON HEMMERDINGER BOSTON
Boeing continues to defend the safety of the 737 Max, issuing a statement saying it has "full confidence" in the type even as multiple civil aviation authorities and airlines outside North America ground the aircraft.
A WTC się wyburzyło, bo naleśniki spadły na podłogę, a Polacy zabili więcej Żydów niż Niemcy (sic!).
Skąd się biorą takie Michasie i Pawełki ?
Ja bym wsadził prezesa do tego latadła i niech lata tym czymś 24/7, tak jak kiedyś inżynier wchodził pod most, w czasie próby obciążeniowej.
I jeszcze spojrzenie na to jak FAA jest podobne do MAK. To samo zakłamanie.
12 MARCH, 2019 SOURCE: FLIGHT DASHBOARD BY: GHIM-LAY YEO WASHINGTON DC
The US Federal Aviation Administration (FAA) reiterates it has seen "no basis" to order a grounding of the Boeing 737 Max, as the USA remains the prominent outlier among a handful of countries that have not suspended operations with the aircraft after the fatal Ethiopian Airlines crash on 10 March.
"The FAA continues to review extensively all available data and aggregate safety performance from operators and pilots of the Boeing 737 Max," says acting FAA administrator Daniel Elwell. "Thus far, our review shows no systemic performance issues and provides no basis to order grounding the aircraft."
Polecam notkę z listopada 2018, gdzie jest więcej szczegółów o problemie.
Problem oprogramowania wydaje się być szerszy:
The 767, registration N1217A, was descending to land at Houston Intercontinental airport when it crashed into Trinity Bay, about 35nm (65km) southeast of the airport.
Story updated on 12 March to reflect revisions made by the NTSB to its investigation update. The revised 12 March update says the aircraft dove following "nose-down elevator deflection". The original update, also released 12 March, had said the aircraft dove following "column input."
The Atlas Air Boeing 767-300ER Freighter that crashed last month was flying in turbulence and had pitched nose up before "nose-down elevator deflection" put the aircraft into a fatal dive, according to the US National Transportation Safety Board.
An investigation update released by the NTSB on 12 March provides no conclusions about the cause of the 23 February crash, but provides new details about the final minutes of the flight.