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FAA says 737 Max 8 is safe but public confidence continues to shrink

TUI 737 Max 8 G-TUMA at Manchester Airport

TUI 737 Max 8 G-TUMA at Manchester Airport

The Federal Aviation Administration (FAA) has issued a continued airworthiness notification, effectively stating publicly that the Boeing 737 Max 8 is airworthy but the reason they have done that is perhaps more telling.

An Ethiopian Airlines Boeing 737 Max 8 crashed shortly after take-off earlier this week killing all , including nine Britons. It was the 2nd accident involving this brand new aircraft type in the space of 6 months and the similarities immediately raised questions, in particular about Boeing’s “ Characteristics Augmentation System” (MCAS).

MCAS was designed by Boeing to counter act the flight characteristics induced by changes to the 737 air frame on the Max variants. Slightly different engine positions needed for the larger engines and some other changes meant the aircraft had a tendency to pitch “nose up” in certain conditions. It is set up that if the pilot enters a manual trim movement, that cuts out any MCAS prompted trim command. Trim is where the elevators are set to a position that means the pilots don’t need to keep on the control yoke to maintain the angle of attack.

Boeing 737 Max 8

Whilst it is too early to say whether the Ethiopian crash was related to the trim or angle of attack of the aircraft, The Lion Air crash in October 2018 has focused on the Angle of Attack sensors which feeds information to the MCAS system.

The similarities of the accidents led many Aviation Authorities and Airlines to ground the type pending further investigations. It has also prompted a flood of questions by passengers about whether the flight they are booked on is a 737 Max, with many trying to cancel if it is.

This damage to public confidence is potentially devastating for Boeing, whose share price is already seeing the effects (currently down 5.3%), the Boeing 737 is the worlds top-selling airliner and the latest variant, the Max is already in service with many airlines.

In the UK TUI Airways (Formerly Thomson) is the only operator although Scandinavian budget airline Norwegian also operate the type from UK Airports.

TUI has said it plans to continue to operate its 6 737 Max 8 aircraft although did say it was in “close contact” with Boeing.

Aviation Authorities in China, Australia, Singapore, Indonesia and the Caymans have grounded the type across the country,

Airlines that have grounded the Max 8

Airlines that are not grounding the 737 Max 8

Boeing has announced that it plans to roll out a software update for the MCAS system in the coming weeks which Boeing says will “ make an already safe aircraft even safer” – It has been working on the update since the preliminary findings of the Lion Air crash.

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