Eastok A320 at Irkutsk on Feb 28th 2012, ILS malfunction leads to premature descent

Last Update: July 18, 2012 / 14:31:24 GMT/Zulu time

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Incident Facts

Date of incident
Feb 28, 2012

Classification
Incident

Airline
Eastok Avia

Flight number
EAA-823

Departure
Osh, Kyrgyzstan

Destination
Irkutsk, Russia

Aircraft Registration
EX-32002

Aircraft Type
Airbus A320

ICAO Type Designator
A320

An Eastok Avia Airbus A320-200 on behalf of Kyrgyz Airways, registration EX-32002 performing flight EAA-823/N5-823 from Osh (Kyrgyzstan) to Irkutsk (Russia) with 171 people on board, was performing an ILS approach to Irkutsk's runway 30 utilizing the autopilot to intercept the localizer and glideslope. After the autopilot engaged mode "G/S" the aircraft began a descent which was terminated by the crew about 48 seconds later at about 530 feet AGL about 11.5nm short of the runway. The autopilot was disconnected and the crew initiated a manual go-around. The aircraft positioned for a second approach and landed safely.

The French BEA reported Russia's Rosaviatsia rated the occurrence a serious incident and is investigating. During the investigation it was so far established that a malfunction of the ILS system contributed to the premature descent.

Rosaviatsia reported the crew initially believed they may have caught a false glideslope signal perhaps due to a wrong QNH setting, however, after verification with ATC the crew stated their pressure setting was correct and they could not explain the descent. After checks the airport decided to take the ILS offline and released a related NOTAM.
Incident Facts

Date of incident
Feb 28, 2012

Classification
Incident

Airline
Eastok Avia

Flight number
EAA-823

Departure
Osh, Kyrgyzstan

Destination
Irkutsk, Russia

Aircraft Registration
EX-32002

Aircraft Type
Airbus A320

ICAO Type Designator
A320

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