Serious Incident to the Airbus A321 registered VT-PPL and operated by Air India and the Boeing 737 registered VT-JBE and operated by Jet Airways on 21/08/2017 en route [Investigation led by AIB / India]
Perte de séparation entre deux avions en croisière, avis de résolution TCAS
Preliminary data based on the notification frorm the Indian authorities:
On 21.08.2017, Air India AIC696, VT-PPL, from Varanasi to Mumbai was vectored towards southeast of Mumbai. JAI426, VT-JBE, from Calicut to Mumbai was in ORBIT east of MB394 and heading towards MB394 while AIC696 was approaching MB394 on easterly heading. Airprox/RA took place in the vicinity of MB394 between FL100 to Fl120. JAI426 reported getting TCAS RA whereas AIC696 reported getting TCAS-TA.TCAS RA took place within 40 nm east of Mumbai. JAI426 (at FL120) which was 12 NM ahead of AIC696 (maintaining FL110.), was given right orbit along with descend to FL100 by the Radar Controller. JAI426 thus came in front of AIC696 and descending through the level of AIC696. The separation was reduced to 2.3 NM (horizontal) and 400 feet vertical.