We review the update planón Boeing to solve the faults of the MCAS in the Boeing 737 MAX 7, 8 and 9 after the eventsás what acquaintances.
Against the clock, but mainly focused on safety and meeting FAA expectations, FBI, EASA, world authorities, users and alsoén all your current and future clients, Boeing has officially presented its upgrade planón to the different systems and components that actúeven when MCAS is activated as a protection processóflight number.
Preliminary Ethiopian Airlines ET302 accident report
Once the preliminary report of what will beíhappened in the accident Boeing 737 MAX 8 of Ethiopian, and I say there will beía because we have to wait until the final report which can take several months más, the manufacturer and aerosolílines prepare for the introductionóNo changes to this system to avoid future accidents.
In this preliminary report it was learned that the crewóNo. of flight ET302 carried outó the necessary procedures and instructions indicated by the manufacturer Boeing that were implemented after the first accident of a MAX on the Lion Air flight, but this procedure did not allow themó regain control of the planeón, despite trying at least four times by disconnecting the MCAS system.
UpdateóMCAS number
As we review in this post about MCAS, he himself isá diseñado, in simple words and ráheld, to compensate for the climb attitude of the MAX in the event that certain torques are exceededámeters to prevent it from entering what is known as péloss, which can lead to risky situationsún the flight stage.
Boeing has developed an updateóMCAS software to provide additional layers of protectionón if AOA sensors provide err dataóneos. The software was submittedó hundreds of hours agoálysis, Lab tests, checkón in a simulator and two test flights, including a certification testón in flight with representatives of the Administrationón Federal Aviationón (FAA) on board as observers.
The additional layers of protección include:
- Flight control system now compareá the inputs of both AOA sensors. If the sensors are notán according to 5.5 thanks o más with retro finsíthe, MCAS will not activateá. An indicator on the flight deck screen alertá to the pilots.
- If MCAS is activated under abnormal conditions, just provideá one entry for each high AOA event. There are no known or anticipated failure conditions where MCAS will provideá múltiple entries.
- MCAS can never order más stabilizer input which can counteract the fact that the crewón of flight move back in the column. The pilots continueán always having the ability to override MCAS and manually control the aircraftón. These upgrades reduce crew workload.ón in non-normal flight situations and prevent errant dataóneos cause activationóMCAS number.
Crew training
To obtain a qualificationón de tipo Boeing 737, pilots must complete 21 o más dítraining aceón acadéinstructor-led course and simulator. Difference training between the NG and the MAX includes computer-based training (CBT) and reviewón manual.
Boeing has created an updated CBT to accompanyñar the updateósoftware no.. Once approved, to beá accessible to all Boeing pilots 737 MAX worldwide. This curso isá diseñdesigned to provide qualified pilotsón type with a better understandingón of the Speed Adjustment System 737 MAX, including the functionón MCAS, crew proceduresón existing associated and related software changes.
The pilots tooén dutyán review:
- Hurtín of the crew operations manualóflight number.
- Check listóNo normal speed setting updated.
- Reference manualáask for revised.
Boeing continúworking with the FAA and other regulatory agencies on certificationóupdate numberósoftware no., what to allowá at a timeún not defined, put back iníflight line the Más de 300 Boeing 737 MAX worldwide.
