Serious incident to the ATR72 registered PK-WHS operated by Wings Air and to the Cessna 172 registered PK-BYK on 21/11/2017 en route [Investigation led by par NTSC / Indonesia]
Perte de séparation en vol entre deux avions en croisière
Responsible entity
Preliminary data from the Indonesian authorities:
When the PK-BYK aircraft approaching point NAMP ISLAND, the PK-BYK PF saw an ATR72-600 aircraft flew through clouds from the opposite direction with aircraft nose slightly up and then the PF decided to descend with intention to avoid ATR72-600 aircraft that was maintaining 8,000 feet.
The PK-WHS pilot performed avoid manoeuvre to the right. At 01:32:06 UTC, the Bali radar screen recorded that the PK-BYK aircraft altitude was passing 8,000 feet and the horizontal distance with WON1861 was 2 Nm. Both flight continued their flight to the destination safely. The aircraft was undamaged and no one injured in this occurrence.