dangle
Topic Author
Posts: 24
Joined: Sat Dec 03, 2016 8:45 pm

737 NG bug: Display units can blank on approach to 7 specific runways

Wed Jan 08, 2020 10:14 pm

Per the AD (Dec 27 2019):

The FAA received reports earlier this year of three incidents of display electronic unit (DEU) software errors on Model 737 NG airplanes flying into runway PABR in Barrow, Alaska. All six display units (DUs) blanked with a selected instrument approach to a runway with a 270-degree true heading, and all six DUs stayed blank until a different runway was selected. The Integrated Standby Flight Display (ISFD) and Heads-Up-Display (HUD) remained operational during this failure of the primary flight displays...Not all runways with a 270-degree true heading are susceptible; only seven runways worldwide, as identified in this AD, have latitude and longitude values that cause the blanking behavior.

The AD mentions that a workaround has been applied to all aircraft that regularly use any of the seven affected airports, but that diverting aircraft need to be aware until a final software update is approved.

Anyone hear any firsthand reports? Given that there were apparently no bad outcomes from this bug, it's amusing to imagine some of the CVR recordings this bug might have induced.
 
mxaxai
Posts: 1282
Joined: Sat Jun 18, 2016 7:29 am

Re: 737 NG bug: Display units can blank on approach to 7 specific runways

Wed Jan 08, 2020 10:35 pm

That's an odd and very specific bug. I wonder why it never occured previously?
 
dangle
Topic Author
Posts: 24
Joined: Sat Dec 03, 2016 8:45 pm

Re: 737 NG bug: Display units can blank on approach to 7 specific runways

Wed Jan 08, 2020 10:50 pm

 
unimproved
Posts: 138
Joined: Sun Jun 22, 2014 7:14 pm

Re: 737 NG bug: Display units can blank on approach to 7 specific runways

Thu Jan 09, 2020 3:42 pm

mxaxai wrote:
That's an odd and very specific bug. I wonder why it never occured previously?

Likely introduced in a recent software update

Who is online

Users browsing this forum: BravoOne, SierraPacific and 11 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos