Created Wednesday, Jan 5th 2022 16:11Z, last updated Thursday, Apr 28th 2022 15:17Z
A LOT Polish Airlines Boeing 787-8, registration SP-LRA performing flight
LO-98 from Seoul (South Korea) to Warsaw (Poland) with 180 people on board, was descending towards Warsaw when the crew noticed a burning odour on board and requested emergency services on stand by for landing. The crew subsequently declared Mayday and continued for a safe landing on runway 11. After landing a passenger dimmable window showed signs of burning.
The aircraft returned to service about 22 hours after landing.
The Dreamliners' (Boeing 787) passenger windows can be dimmed with the assistance of a gel enclosed between the window panes. An electric current through the gel can be controlled by the passenger.
On Jan 8th 2022 the airline sent following statement to The Aviation Herald:
- During descent cabin crew smelled an odor. Captain performed an inspection and Crew decided to perform standard landing asking for landing priority and assistance. Plane landed safely and Passengers were deboarded using the stairs.
- there was no fire,
- window was INOP and disconnected in BUD (Plane was performing WAW-ICN-BUD-ICN-WAW rotation) and was due to replace after landing in WAW (and it happened), so at any point it couldn't be the source of smell.
- most probable cause was one of low voltage fans in IFE cabinet.
On Apr 27th 2022 Poland's PKBWL (Accident Investigation) released their brief final report in Polish only stating that no cause of the incident could be determined, no anomalies could be found that could explain the smell of burning plastics in the passenger cabin.
The PKBWL reported that the smell of burning plastics appeared in the passenger cabin during the approach to land, the crew worked the related checklists after touchdown, howewer, no fault could be determined. The aircraft and systems were left turned on for several hours after landing under supervision and surveillance by maintenance engineers, no smell occurred durign that time. Assuming that the smell could have been produced by the recirculation fans, the lower right hand recirculation fan was replaced.
The malfunctioning passenger window:
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