MD83, Juba Sudan, 2006

MD83, Juba Sudan, 2006

Summary

On 23 June 2006, an AMC Airlines MD83 significantly overran the landing runway at Juba after a late touchdown followed by unexpected and un-commanded asymmetry in ground spoiler deployment and thrust reverser control caused by an unappreciated loss at some point en-route of all fluid from one of the two hydraulic systems. The Investigation concluded that the abnormal hydraulic system status should have been detectable prior to attempting a landing but also that one of the consequences of hydraulic system design should be modified.

Description

On 23 June 2006, a Boeing MD83 of Egyptian operator AMC Airlines under wet lease to Sudan Airways on a scheduled passenger flight from Nairobi to Juba overran the 2400 metre long landing runway at destination in normal day visibility. None of the 24 occupants were injured but the aircraft suffered significant damage to the nose and left main landing gear. Minor runway end ground lighting damage was caused by aircraft impact. ATC were not initially aware of the overrun as it was not visible from their position.

Investigation

An Investigation was carried out by the Sudan CAA Air Accident Investigation Central Directorate. Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR) data was successfully downloaded to assist the Investigation - although it was found that some recordings for left and right systems were reversed. It was noted that type-experienced aircraft commander had been PF and that the First Officer had very low total and aircraft type experience. It was noted that a second pilot experienced on the aircraft type and holding the rank of Captain was ‘observing’ from the supernumerary crew seat in the fight deck but no comment was made as to his operational duties and/or role, if any.

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