Based on GDS information, QR will change aircraft to B77L iso B77W on the following dates, so they will operate B77L & B77W for both flights. QR273/QR274: -30OCT. -12MAR -26MAR QR275/QR276: - 05NOV - 17NOV-24NOV (on day 5,7only) - 26NOV-03DEC (on day 5,7only) - 04DEC - 11DEC - 15DEC - 18DEC (on D1, ...