Abnormal Runway Contact, Wings Air (Atr 72-600 PK-WGW); Ahmad Yani International Airport, Semarang, KNKT.16.12.43.04

On 25 December 2016, an ATR 72-600 aircraft registered PK-WGW was being operated by PT. Wings Abadi Airlines (Wings Air) as a scheduled passenger flight from Husein Sastranegara International Airport (WICC), Bandung to Ahmad Yani International Airport (WAHS), Semarang with flight number WON 1896. On board the aircraft were two pilots, two flight attendants and 68 passengers. There was no report or record of aircraft system malfunction prior to the departure.

At 1734 LT (1034 UTC), the aircraft departed from Bandung. The Pilot in Command (PIC) acted as Pilot Flying (PF) and the Second in Command (SIC) acted as Pilot Monitoring (PM). The flight from departure until commencing for landing approach was uneventful.

At 1121 UTC, the tower controller had visual contact to the aircraft and issued landing clearance, the pilot acknowledged the clearance and requested to reduce the approach light intensity. The tower controller reduced the light intensity and confirmed whether the intensity was appropriate then the pilot affirmed.

At 1124 UTC, the aircraft touched down and bounced. After the third bounce, the pilot attempted to go around and the aircraft touched the runway.

The tower controller realized that the aircraft was not in normal condition and pressed the crass bell then informed the Airport Rescue and Fire Fighting (ARFF) personnel by phone that there was aircraft accident near the taxiway D. While waiting the assistance, the pilot kept the engines run to provide lighting in the cabin.

At 1129 UTC, the tower controller advised the pilot to shut down the engines since the ARFF personnel had arrived near the aircraft to assist the evacuation. Passenger evacuation completed at approximately 10 minutes after the aircraft stopped.

No one injured in this accident and the aircraft was substantially damaged. The right main landing gear folded inward and the propellers tip of the engine number 2 broken at about 26 cm from the tip. On the right fuselage of the aircraft, found several dents and punctures.

The investigation determined that the aircraft serviceability was not issue in this occurrence. Therefore, the analysis discussed the bounce landing, visual illusion and emergency procedure. The investigation concluded the contributing factor of the accident was:

· The visual illusion of aircraft higher than the real altitude resulted in late flare out which made the aircraft bounced.

· The unrecovered bounce resulted in abnormal landing attitude with vertical acceleration up to 6 g and collapsed the right main landing gear.

Following the investigation, the Komite Nasional Keselamatan Transportasi (KNKT) has informed several safety actions and corrective action responding to the KNKT safety investigation on the preliminary report taken by PT. Wings Abadi Airlines. The KNKT acknowledges the safety actions and did not issue safety recommendation in this report.

Investigation involved Bureau d’Enquêtes et d’Analyses pour la Sécurité de l’Aviation (BEA), France that assigned accredited representative according to the ICAO Annex 13.