Newer planes are here to stay. Mandala ordered 25 brand new A320s, Batavia already has 2 new A319s, and Lion is going to flood our skies with 739ERs. So what do we do? Our 737-300 and -400s are slower, and guzzle more fuel than them, although we aren't as bad as the -200s. But then, the recent holiday season did reveal something, sometimes passengers DO notice if we take off before an aircraft that lands before we do.
How do we go about this?
On a recent flight from Medan to Jakarta, we were late. As we were completing our boarding, a Mandala A320 next to us had already commenced their pushback. Our flight was full, and we were heavy. I looked at the first officer and asked, "Wanna beat that Airbus?"
"Sure Kep, how?"
"We filed for flight lever 350?"
"Yes."
"That Mandala I heard is filing at 350 too. He'll be doing mach 0.76 to 0.78. Shall we speed below them? Say max cruise at FL310? If we have no delays we should catch up with them just after Palembang."
"Wouldn't the chief want to have a word with you when he sees our fuel burn?"
"Hey, we're late, we're full, we got connecting passengers who don't want to miss their onward flights, so, WHY NOT?"
"Your call Kep! It's your turn to fly next anyways."
"Let's revise after we push back."
We pushedback just as the Mandala was entering the runway. With little traffic, we were soon taxying towards runway 23. As we neared the holding point, the first officer asked if there was any incoming traffic that would delay us. There was none. We asked to revise our altitude to FL310.
"Standby," was the answer.The tower came back telling us to line up and wait on the runway. So we did.
"Pigflyer 73, Flight Level Three-One-Zero is approved. After airborne turn left direct MEDIA climb FL150. Wind is calm. Runway 23 cleared for take off."
The first officer answered promptly and then turned to me, "310 approved Kep, and clear for take off."
"OK, let change the cruise altitude on the FMC."
"Ok. Done."
"Ready?"
"Ready when you are."
As we took off, I wondered how far the Mandala A320 is. We cleaned up quickly, turned to MEDIA to join W12 and asked for high speed climb. After switching to the autopilot, we revised the climb speed and manually overrode the econ cruise. After we were happy that the fuel estimates on arrivals were safe, we committed ourselves to the race.
Whilst enjoying coffee and puffing away at FL310, we'd check on the TCAS on the position of the Mandala A320 4000ft above us by selecting "UP" on the TCAS from time to time. We were catching up slowly, although we were burning 250kgs extra fuel per hour.
Unless there are significantly different winds, a given mach number at FL310 would yield a faster ground speed than one at FL350. We overtook the A320 from underneath just as we passed Palembang, and continued until we had enough distance infront of him before slowing down to our economic cruise, and then perform a normal descent.
We landed 10 minutes ahead of the Mandala, and did it all safely without exceeding any of the operational limits, with fun, and most of all regained time for our customers, ain't that right chief?
