BinAir SW4 at Dublin on Mar 7th 2013, nose gear collapsed on landing
Last Update: July 16, 2013 / 17:11:23 GMT/Zulu time
Incident Facts
Date of incident
Mar 7, 2013
Classification
Accident
Aircraft Registration
D-CAVA
Aircraft Type
FAIRCHILD (1) SA-227CC Metro
ICAO Type Designator
SW4
Inadvertent selection of the landing gear selector to the UP position during the landing roll.
Contributory Causes
- Reduced task focus by the PF following a tense and stressful limits approach.
- Inactive landing gear interlock protection system due to the aircraft speed.
The aircraft was conducting a CAT I ILS approach to Dublin's runway 10, cloudbase 300 feet and visibility of 1100 meters, the first officer (26, CPL, 1,296 hours total, 1,086 hours on type) was pilot flying and the captain (31, CPL, 3,570 hours total, 2,630 hours on type) was pilot monitoring. While slowing through 90 knots the landing gear selector was moved to the up position, most likely instead of operating the flaps selector, the error was instantly recognized and the gear lever was returned to the down position, however, the nose gear had already started to retract and did not stop retraction.
The first officer stated in post flight interviews that the approach had been particularly stressful due to the uncertainty they would be able to make it in, then they broke out of cloud at about 650 feet and about 200 feet above decision height. A lapse of mind probably happened when he wanted to operate the flaps but obviously operated the gear lever instead.
The AAIU analysed: "It seems likely that the reason that the interlock system did not prevent the landing gear selector being moved to the UP position was that the airspeed at the time was high enough to provide sufficient lift (insufficient weight on wheels) to prevent the interlock system from activating."
The AAIU further analysed: "Whilst it is not possible to be definitive as to why the landing gear selector was moved to the UP position, the PF described feelings of tension and stress associated with the limits approach he flew into EIDW due to the poor weather conditions. It is possible that following the successful landing, and the associated relief of tension and stress, the PF may have relaxed leading to a reduced level of task attention as he went through his checks prior to leaving the runway. This reduced level of task attention probably facilitated the lapse whereby the landing gear selector was incorrectly moved to the UP position. The immediate recognition and rectification of this lapse was too late to prevent the retraction of the nose wheel."
Incident Facts
Date of incident
Mar 7, 2013
Classification
Accident
Aircraft Registration
D-CAVA
Aircraft Type
FAIRCHILD (1) SA-227CC Metro
ICAO Type Designator
SW4
This article is published under license from Avherald.com. © of text by Avherald.com.
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