Sun-Air D328 at Billund on Dec 17th 2010, smoke in cockpit and cabin

Last Update: May 11, 2012 / 17:01:51 GMT/Zulu time

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Incident Facts

Date of incident
Dec 17, 2010

Airline
Sun-Air

Flight number
EZ-8211

Aircraft Registration
OY-NCL

Aircraft Type
DORNIER 328

ICAO Type Designator
D328

A Sun-Air Dornier D-328-300, registration OY-NCL performing flight EZ-8211 from Billund (Denmark) to London Stansted,EN (UK) with 26 passengers and 3 crew, was originally destined for London City,EN (UK) but due to a delay needed to head for Stansted Airport. The aircraft departed Billund's runway 09 and was climbing through 800 feet AGL when the crew noticed a chemical odour and smoke like haze around the map and instrument lights. At the same time the flight attendant called the flight deck reporting smoke and odour in the cabin. At the same time a smoke indication for the rear toilet illuminated. The crew declared emergency, stopped the climb and decided to return to Billund. While positioning for runway 09 the crew worked the relevant checklists which required the #2 air conditioning system to be shut down after which the smoke and odour began to dissipate. The aircraft landed safely back on runway 09 about 8 minutes after departure.

Denmark's Havarikommission (HCL) released their final report in Danish concluding the probable cause of the incident was a worn and slightly damaged carbon seal in the right hand engine.

The HCL reported that as result of the haze dissipating after shutting the #2 air conditioning system down maintenance conducted a borescopic inspection of the right hand engine immediately after landing and found the compressor stage #2 contaminated with engine oil. With the compressed air that oil was then transferred to the air conditioning systems and in turn caused the smell and haze. The engine was removed from the aircraft and sent to the manufacturer for further examination, which revealed a carbon seal at the #2 bearing was worn and slightly damaged.

The HCL assessed that occurrences of this sort had been very few worldwide, it was the first such event in Denmark. The board therefore concluded it was a unique event which does not require further action like engine modification.
Incident Facts

Date of incident
Dec 17, 2010

Airline
Sun-Air

Flight number
EZ-8211

Aircraft Registration
OY-NCL

Aircraft Type
DORNIER 328

ICAO Type Designator
D328

This article is published under license from Avherald.com. © of text by Avherald.com.
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