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Last updated: 30 March 2020
Status:Schlussbericht
Datum:Mittwoch 11 Juni 2014
Zeit:06:20
Flugzeugtyp:Silhouette image of generic AT76 model; specific model in this crash may look slightly different
ATR 72-600 (72-212A)
Fluggesellschaft:Wings Air
Kennzeichen: PK-WGK
Werknummer: 1106
Baujahr: 2013-08-13 (10 months)
Betriebsstunden:1642
Anzahl Zyklen der Zelle:1825
Triebwerk: 2 Pratt & Whitney Canada PW127M
Besatzung:Todesopfer: 0 / Insassen: 4
Fluggäste:Todesopfer: 0 / Insassen: 55
Gesamt:Todesopfer: 0 / Insassen: 59
Sachschaden: schwer beschädigt
Konsequenzen: Repaired
Unfallort:Surabaya-Juanda Airport (SUB) (   Indonesien)
Flugphase: Landung (LDG)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Lombok International Airport (LOP/WADL), Indonesien
Flug nach:Surabaya-Juanda Airport (SUB/WARR), Indonesien
Flugnummer:IW1861
Unfallbericht:
The airport operator of Surabaya-Juanda International Airport, Indonesia, planned to perform runway maintenance that would be conducted at night after the runway operation.
On 11 June 2014, between 0100 to 0500 LT, runway maintenance was performed by a group of 10 workers, using tools including pneumatic compressor, jack hammer, chisel, high air pressure hose, asphalt mixer, small container for asphalt mixture, debris sweeper and other supporting equipment.
At 04:05 LT, the Airport Facility Readiness personnel conducted a runway readiness check in conjunction with patrolling the airside using a patrol car. At 04:30 LT, they reported to the Juanda Tower controller that the runway was clear from any hazard except the area near intersection N3 where the runway repair was still in progress. At 04:50 LT, the airport maintenance team reported to Juanda Tower controller that the runway repair had finished and the runway maintenance team had left the runway. No runway inspection was performed after the runway repair finished.
The airport opened for traffic at 05:00 as planned. Until 06:06 hours, a total of eleven aircraft departed and one aircraft arrived. No pilot reported any foreign objects on the runway. The first pilot report of objects was near the intersection taxiway N5 and was made at 06:09 LT which was after sunrise at 05:59 LT. At 06:15 LT, the controller contacted the Airport Facility Readiness personnel but received no reply. Thereafter the controller contacted the ARFF personnel and informed them of the pilot report of an object on the runway and requested a check. When the ARFF vehicle arrived near the runway the controller instructed to wait for three aircraft that were about to land.
At 06:20 LT, an ATR 72-600 (PK-WGK) with flight number IW1861 landed and impacted the chisel, which resulted in eight holes in the aircraft lower fuselage.
The controller then decided to close the runway operation and instructed the ARFF personnel to enter and inspect the runway. The ARFF personnel found a compressor hose (about 10 meters long), a jack hammer (about 60 cm long) and chisel (about 4.5 kg) on the runway.

Probable Cause:

Contributing Factors:
- The runway inspection that was performed while the runway maintenance has not been finished resulted in the object which were on dark color and found on dark surface did not properly inspect.
- The insufficient information regarding the objects and the location might have made improper assessment to the consequences of the runway operation and delaying the object removal.

Accident investigation:
cover
Investigating agency: NTSC Indonesia
Status: Investigation completed
Duration: 4 years and 4 months
Accident number: KNKT.14.06.13.04
Download report: Final report


Sicherheitsempfehlungen

NTSC issued 6 Safety Recommendations

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Fotos

photo of ATR-72-600-PK-WGK
accident date: 11-06-2014
type: ATR 72-600
registration: PK-WGK
photo of ATR-72-600-PK-WGK
 

Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Lombok International Airport to Surabaya-Juanda Airport as the crow flies is 412 km (257 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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