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ASN Wikibase Occurrence # 200008
Last updated: 14 October 2020
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Date:09-SEP-2017
Time:c. 19:26 LT
Type:Silhouette image of generic AT72 model; specific model in this crash may look slightly different
ATR 72-500 (72-212A)
Owner/operator:Swiftair, opf Air Europa
Registration: EC-KKQ
C/n / msn: 763
Fatalities:Fatalities: 0 / Occupants: 26
Other fatalities:0
Aircraft damage: None
Category:Serious incident
Location:between Alicante and Madrid -   Spain
Phase: En route
Nature:Passenger - Scheduled
Departure airport:Alicante Airport (ALC/LEAL)
Destination airport:Madrid-Barajas Airport (MAD/LEMD)
Investigating agency: CIAIAC
Narrative:
Air Europa flight UX4050, operated by a Swiftair ATR 72-500, was involved in a stall incident when it was passing through an area with icing conditions while climbing to FL170.
The aircraft took off normally in daylight conditions at 19:09 hours local time from runway 10 at Alicante Airport. On board were 22 passengers, and 4 crew members. The flight was to be carried out at FL170 and moderate ice conditions were expected on the climb up to FL150.
The aircraft made the CATON3A departure and was initially authorized to FL170. Ten minutes into the flight, with the aircraft at FL130, the crew activated all three levels of ice protection. Seven minutes later, at 19:26 hours, with the aircraft climbing to FL170 the aircraft entered a stall
The crew recovered from the stall and declared an emergency. The autopilot was switched off and the aircraft experienced a sharp drop in altitude and oscillations.
The crew declared MAYDAY to the air traffic control services and was given priority for landing in Madrid. During the approach, there was a blockage problem in the vertical stabilizer which was later linked to a TLU (travel limitation unit) operating problem.
The landing and taxiing took place without any further incidents. None of the occupants of the aircraft were injured.

The investigation has determined that the probable cause of the loss of control in icing conditions was a deficient flight management by the crew and an inappropriate use of automation. Investigators were critical of the climb management as the climb target speed of 170 KIAS was not maintained. Instead 180 KIAS and later 176 KIAS were used. The crew also used the PITCH autopilot mode rather than the IAS autopilot mode, even though none of the conditions for PITCH mode existed.

Sources:

https://www.bea.aero/en/investigation-reports/notified-events/detail/event/serious-incident-to-the-atr72-registered-ec-kkq-and-operated-by-swiftair-on-09092017-at-alicante/
https://www.flightradar24.com/data/aircraft/ec-kkq#eccc31a
https://www.fomento.gob.es/MFOM/LANG_CASTELLANO/ORGANOS_COLEGIADOS/CIAIAC/INVESTIGACION/2017/IN-020_2017.htm
https://www.flightglobal.com/safety/swiftair-atr-icing-stall-inquiry-catalogues-series-of-crew-failures/136543.article
https://www.mitma.es/recursos_mfom/comodin/recursos/in-020-2017_final_report_nm.pdf

Accident investigation:
cover
  
Investigating agency: CIAIAC
Status: Investigation completed
Duration: 2 years and 5 months
Download report: Final report
Other occurrences involving this aircraft

24 Jun 2013 EC-KKQ Swiftair, opf Air Europa 0 Madrid-Barajas Airport (MAD/LEMD) min


Images:

Photo of EC-KKQ courtesy AirHistory.net


Madrid - Adolfo Suarez / Barajas (LEMD / MAD)
26 March 2011; (c) Scott Jamieson


Revision history:

Date/timeContributorUpdates
28-Sep-2017 14:02 harro Added
28-Sep-2017 14:03 harro Updated [Photo, ]
28-Sep-2017 14:13 harro Updated [Time, Source, Narrative, Photo, ]
28-Sep-2017 14:15 harro Updated [Narrative]
05-Oct-2017 17:34 harro Updated [Total occupants, Narrative]
08-Oct-2017 11:51 Aerossurance Updated [Source]
08-Feb-2020 10:00 Aerossurance Updated [Source, Narrative]
08-Feb-2020 10:08 Aerossurance Updated [Source]
08-Feb-2020 10:44 harro Updated [Source, Accident report, ]

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