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ASN Wikibase Occurrence # 239188
Last updated: 5 December 2021
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Date:07-MAY-2019
Time:19:06 UTC
Type:Silhouette image of generic A320 model; specific model in this crash may look slightly different
Airbus A320-214
Owner/operator:easyJet Europe
Registration: OE-IJL
MSN: 4680
Fatalities:Fatalities: 0 / Occupants:
Other fatalities:0
Aircraft damage: None
Category:Serious incident
Location:Lisboa-Humberto Delgado Airport (LIS/LPPT) -   Portugal
Phase: Take off
Nature:Passenger - Scheduled
Departure airport:Lisboa-Humberto Delgado Airport (LIS/LPPT)
Destination airport:Paris-Charles de Gaulle Airport (CDG/LFPG)
Investigating agency: AAIB
Narrative:
During pre-flight preparations, both pilots completed a takeoff performance calculation for a takeoff from the runway intersection with Taxiway U5. During subsequent re-planning, the crew thought they had recalculated performance information from Taxiway S1 but had, in fact, used S4 (runway full length). The aircraft took off from Taxiway U5 with performance calculated for the full runway length. The takeoff distance available from U5 was 1,395 m less than that used for the performance calculation. The aircraft lifted off 350 m before the upwind runway threshold which it crossed at about 75 ft aal.

AAIB Conclusion:
The aircraft took off using incorrect performance data for the intersection used. A selection error was made in the EFB which led the crew to believe that they had calculated performance information for a departure from S1 when in fact they had selected the full length of the runway. The procedural barrier of cross-checking the runway distance against the aerodrome ground chart failed to prevent to error. Human performance limitations mean it is difficult for pilots to recognise and react to reduced performance (acceleration) once the takeoff has begun, so robust adherence to procedures is a key defence against such incidents occurring.

Sources:

https://www.bea.aero/en/investigation-reports/notified-events/detail/event/incident-dun-airbus-a320-exploite-par-easyjet-survenu-le-24042019-a-lisbonne-portugal-enquete-m/
http://www.gpiaa.gov.pt/wwwbase/wwwinclude/ficheiro.aspx?tipo=0&id=10684&ambiente=WebSiteMenu

Accident investigation:
cover
  
Investigating agency: AAIB
Status: Investigation completed
Duration:
Download report: Final report


Images:

Photo of OE-IJL courtesy AirHistory.net


Gran Canaria (GCLP / LPA)
20 October 2021; (c) Photography Jc la Palma

Revision history:

Date/timeContributorUpdates
06-Aug-2020 18:49 harro Updated [Time, Cn, Operator, Total occupants, Destination airport, Narrative, Accident report, ]

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