Lionair B739 at Surabaya on Feb 20th 2016, runway excursion on landing
Last Update: April 5, 2017 / 15:26:32 GMT/Zulu time
Incident Facts
Date of incident
Feb 20, 2016
Classification
Incident
Cause
Runway excursion
Airline
Lion Air
Flight number
JT-263
Departure
Balikpapan, Indonesia
Destination
Surabaya, Indonesia
Aircraft Registration
PK-LFG
Aircraft Type
Boeing 737-900
ICAO Type Designator
B739
Airport ICAO Code
WARR
The occurrence aircraft is still on the ground about 18 hours after landing.
The airport reported the airport was briefly closed until the aircraft was moved to the apron. There were no injuries, the aircraft received no damage.
On Apr 5th 2017 Indonesia's KNKT/NTSC released their final report concluding the probable causes were:
Contributing Factors
- The difficulty to control the aircraft and deteriorating weather did not trigger firm action resulted in the combination of lack of communication and leadership.
- The combination of prolong touchdown, delay in spoiler deployment, thrust levers not at idle position, and late of brake application had affected the landing distance.
The KNKT reported the first officer (35, CPL, 1,817 hours total, 1,617 hours on type) was pilot flying, the captain (59, ATPL, 28,000 hours total, 4,218 hours on type) was pilot monitoring.
While on an ILS approach to runway 10 the first officer disconnected the autopilot at 600 feet AGL. Tower announced the visibility had decreased to 1000 meters. On short final the captain noticed the first officer had difficulty controlling the aircraft and assisted controlling the aircraft, then returned full control to the first officer after the aircraft had returned onto the correct approach path. The aircraft touched down on the runway about 552 meters past the runway threshold at 150 KIAS and 3.4 knots tailwind, however, the first officer was not able to select the thrust reversers and informed the captain, the captain too could not select the thrust reversers. The flight data recorder showed the speed brakes remained armed, the thrust lever positions were 41.3 degrees with the N1 on left/right hand engine being 47/42%. 7 second after touchdown the captain took control, the speed brakes were deployed subsequently (10 seconds after touchdown), 14 seconds after touch down the brakes pressure began to increase, 21 seconds after touchdown RAAS announced "two tousand remaining", the captain requested the first officer to assist braking, the brakes pressure increased to maximum 3000 psi, the engine N1 reduced to 21% and the throttle lever position changed to 37 degrees. 40 seconds after touchdown the aircraft stopped.
The aircraft overran the end of the runway and came to a stop with the nose gear about one meter beyond the pavement.
28 minutes after the overrun stairs arrived and the passengers disembarked via the stairs.
The KNKT analysed that both good and medium braking action were sufficient to stop the aircraft (7,364/9,157 feet landing distance required with 9,842 feet landing distance available). The delayed deployment of spoilers and brakes however affected the landing distance needed.
The KNKT analysed that the takeover of control during short final was not clearly communicated, the captain should have announced "I have control" and upon returning the controls "You have control", however, did not clearly communicate. Only after landing the captain stated "I have control".
The KNKT analysed that the thrust reversers could not deployed because the thrust levers were not at idle position. The thrust levers reached the idle position (37 degrees) only 20 seconds after touch down.
The KNKT concluded analysis: "The deteriorating weather condition and difficulty of the SIC to control the aircraft did not trigger a firm decision and resulted in improper task distribution of pilot flying and pilot monitoring during approach and landing. This condition showed lack of leadership."
Metars:
WARR 200530Z 04004KT 030V100 9999 FEW020CB 29/24 Q1010 RERA=
WARR 200430Z 14006KT 060V210 7000 -TSRA SCT018 FEW020CB 27/23 Q1011=
WARR 200400Z 11004KT 030V170 6000 TSRA BKN016 FEW018CB 28/25 Q1012=
WARR 200330Z VRB04KT 7000 RA BKN016 FEW018CB 30/25 Q1012=
WARR 200300Z VRB02KT 9999 SCT020TCU 31/23 Q1012=
WARR 200230Z VRB02KT 9999 FEW020TCU 31/24 Q1012=
WARR 200200Z VRB03KT 9999 FEW020TCU 30/25 Q1012=
WARR 200130Z VRB02KT 8000 FEW020TCU 30/25 Q1012=
WARR 200100Z VRB03KT 7000 FEW020 29/24 Q1012=
Incident Facts
Date of incident
Feb 20, 2016
Classification
Incident
Cause
Runway excursion
Airline
Lion Air
Flight number
JT-263
Departure
Balikpapan, Indonesia
Destination
Surabaya, Indonesia
Aircraft Registration
PK-LFG
Aircraft Type
Boeing 737-900
ICAO Type Designator
B739
Airport ICAO Code
WARR
This article is published under license from Avherald.com. © of text by Avherald.com.
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