Published: Thu, November 08, 2018
Money | By Arnold Ball

Airlines that fly the Boeing 737 MAX

Airlines that fly the Boeing 737 MAX

The US Federal Aviation Administration has issued an emergency airworthiness directive for the Boeing 737 MAX 8 and MAX 9 after one crashed in Indonesia last month killing all 189 people on board.

Boeing issued a statement on an update to the 737 MAX flight manual on Tuesday, Nov. 6, a day after investigators discovered JT610's faulty airspeed indicator.

Representatives of 737 MAX operators, Singapore Airlines Ltd SIAL.SI offshoot SilkAir, Garuda Indonesia GIAA.JK and Canada's WestJet Ltd WJA.TO , said they had not yet received a bulletin from Boeing.

Boeing said on Wednesday it had issued a safety bulletin reminding pilots how to handle erroneous data from a sensor in the wake of the Lion Air crash.

"Both the documents address erroneous high "angle of attack" (AOA) sensor input and corrective action for the same as it has potential for repeated nose-down trim commands of horizontal stabiliser", a senior Directorate General of Civil Aviation (DGCA) official told.

The FAA said the order is effective immediately and covers 45 aircraft in the United States operated by carriers including Southwest Air Co, United Airlines and American Airlines Group Inc and addresses erroneous angle of attack inputs.

Some modern aircraft have systems created to correct the posture of the aircraft automatically to keep flying safely.

Indonesian investigators said their flight procedure recommendations to Boeing were based on how the flight crew responded to problems on the Bali-to-Jakarta flight. Moments earlier, the pilots radioed a request to return to Jakarta to land, but never turned back toward the airport, according to Indonesia's National Transportation Safety Committee and flight-track data.

The crash was the first time one of the airplanes went down.

'She Loved People': Parents Remember Girl Scout Killed by Huffing Driver
The local Girl Scout group consisted of 12 persons (5 adults and 7 children) who participating in a highway cleanup project. Treu and the passenger told police they had been "huffing," or intentionally inhaling chemical fumes, police have said.

The Boeing 737 Max has three such blade-shaped sensors.

False readings from the sensor can cause the aircraft to pitch downward in an attempt to avoid a stall when the plane is not being flown on autopilot. "And yes, we now have seven Max 9's in operation. there are no plans to alter our 737 Max operations".

The Boeing 737 MAX entered service in 2017 to great fanfare.

The Lion Air crash was the first involving the new version, which airlines introduced into service past year.

On Monday Nov. 5, CNN published an update on the crash investigation from Capt. Nurcahyo Utomo of Indonesia's National Transportation Safety Committee (KNKT) noting that the FDR review also concluded that the aircraft's airspeed indicator had been malfunctioning on four consecutive flights prior to the crash.

Divers have recovered one of the two "black boxes" - the flight data recorder - but are still searching for the cockpit voice recorder, in the hope it will shed more light on the cause of the disaster.

The aviation analyst Richard Aboulafia says that since the bulletin doesn't reflect poorly on the 737 Max's design, Boeing's business is unlikely to be harmed by the news.

He added that the broken sensor from the Bali-Jakarta flight would be sent to the manufacturer in Chicago for further examination.

Like this: