Alaska Airlines Boeing 737-800 Suffered Engine Failure In Austin

Alaska Airlines Boeing 737-800 Suffered Engine Failure In Austin. Photo: Wikimedia

An Alaska Airlines Boeing 737-800 suffered an engine failure while it was en-route from Seattle-Tacoma International Airport, WA to Austin-Bergstrom International Airport, Texas on 15th July.

The Boeing 738 operating flight AS-1146 suffered an (CFM56) engine failure when descending into Austin. The crew reported that the left engine had failed.

The crew members immediately performed a checklist related to the engine failure. During approach, the crew informed Austin Air Traffic Control that they were restarting the engine .

The crew tried to restart the engine. Photo: Boeing

However, the crew members were unable to restart the engine. So the crew reported they had lost engine one and continued for a safe landing on Austin's runway 17R.

Before this incident, the aircraft had last flown from New York JFK to Seattle Tacoma on Jul 9th 2020. The aircraft then remained on the ground for 6 days and 4 hours before departing for the incident flight.

Alaska Airlines confirmed the aircraft suffered an engine shut down issue. After suffering engine failure, the aircraft remained on the ground for 4 days for an engine change before returning back to service.

The aircraft was 13.5 years old. Photo: Getty

The Boeing 737-800, with registration N569AS was delivered to Alaska Airlines back in March, 2007 and is currently 13.5 years old. 

The particular aircraft was popular among Alaska fans and frequent flyers as it featured special livery. The aircraft was previously painted in "75th Anniversary" special colours until September 2017.

This incident is believed to be one of four mentioned by FAA as reason for Emergency Airworthiness Directive 2020-16-51. The FAA issued an emergency order directing airlines to check the engine bleed air 5th stage check valve on each engine for proper and free operation on all of their 737 aircraft.

The aircraft was painted in special livery. Photo:

Regarding this, the FAA reasoned:

"This emergency AD was prompted by four recent reports of single-engine shutdowns due to engine bleed air 5th stage check valves being stuck open. Corrosion of the engine bleed air 5th stage check valve internal parts during airplane storage may cause the valve to stick in the open position."

"If this valve opens normally at takeoff power, it may become stuck in the open position during flight and fail to close when power is reduced at top of descent, resulting in an unrecoverable compressor stall and the inability to restart the engine. Corrosion of these valves on both engines could result in a dual-engine power loss without the ability to restart."

The Boeing 737 Max is not included in the advisory. Photo: Getty

"This condition, if not addressed, could result in compressor stalls and dual-engine power loss without the ability to restart, which could result in a forced off-airport landing."

The emergency order applies to the Boeing 737-800 NG and classic versions of Boeing 737 series. However, the grounded 737 Max is not included in the advisory. 

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  1. "forced off-airport landing." A crash in other words. Can't say it out loud.