B739, Pekanbaru Indonesia, 2011

B739, Pekanbaru Indonesia, 2011

Summary

On 14 February 2011, a Lion Air Boeing 737-900 making a night landing at Pekanbaru overran the end of the 2240 metre long runway onto the stopway after initially normal deceleration largely attributable to the thrust reversers was followed by a poor response to applied maximum braking in the final 300 metres. Whilst performance calculations showed that a stop on the runway should have been possible, it was concluded that a combination of water patches with heavy rubber contamination had reduced the friction properties of the surface towards the end of the runway and hence the effectiveness of brake application.

Description

On 14 February 2011, a Boeing 737-900 being operated by Lion Air on a scheduled domestic passenger flight from Jakarta to Pekanbaru overran landing runway 36 onto the stopway in normal night visibility after a standard touchdown on a surface wet with water patches after unexpectedly poor deceleration. There were no injuries to the 219 occupants who were subsequently disembarked by airstairs and the aircraft sustained only minor damage.

Investigation

An Investigation was carried out by the Indonesian NTSC with access to recorded data from the SSFDR but not from the 30 minute SSCVR which was left running after the aircraft stopped so that the relevant period was overwritten. It was noted that Lion Air had not provided the total and aircraft type pilot hours for either pilot to the Investigation.

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