T00:00 
PS1 Ignition 
The PSLV's solidfueled first stage motor ignites when the countdown clock reaches zero. 

T+00:00.46 
Groundlit Booster Ignition 
Four of the PSLV's six strapon boosters ignite in pairs twotenths of a second apart at T+plus 0.42 seconds and T+plus 0.62 seconds to push the 146foottall rocket off the pad atop 1.7 million pounds of thrust. 

T+00:25 
Airlit Booster Ignition 
Two more 39footlong strapon motors ignite at an altitude of more than 8,800 feet to give the PSLV an extra boost. 

T+01:10 
Groundlit Booster Separation 
The PSLV's four groundlit boosters burn out and jettison, leaving the first stage and two airlit boosters to continue firing. 

T+01:32 
Airlit Booster Separation 
The PSLV's two airlit boosters burn out and jettison at an altitude of more than 25 miles. 

T+01:49 
First Stage Separation/Second Stage Ignition 
Flying at an altitude of nearly 35 miles, the PSLV's solidfueled first stage burns out and separates after consuming more than 300,000 pounds of propellant. The PSLV's Vikas second stage engine ignites less than a second later. 

T+01:55 
Closedloop Guidance 
The PSLV initiates closedloop guidance. 

T+03:19 
Payload Fairing Jettison 
The 3.2meter, or 10.5foot, diameter aluminum payload fairing jettisons once the PSLV flys above the dense lower atmosphere, exposing the IRNSS 1C satellite to space. 

T+04:21 
Second Stage Separation 
The PSLV's Vikas engine shuts down and the second stage separates at the conclusion of its burn at an altitude of 82 miles. 

T+04:22 
Third Stage Ignition 
The PSLV's third stage solidfueled motor begins a 112second burn. 

T+06:14 
Third Stage Burnout 
The PSLV's third stage motor burns out, and the rocket begins a coast phase. 

T+11:02 
Third Stage Separation 
The PSLV's third stage separates from the fourth stage. 

T+11:12 
Fourth Stage Ignition 
The PSLV's fourth stage, powered by two hydrazinefueled engines, ignites to propel the IRNSS 1C spacecraft into geostationary transfer orbit. 

T+19:41 
Fourth Stage Shutdown 
The fourth stage shuts down after achieving an orbit with a perigee of 176 miles, an apogee of 12,831 miles and an inclination of 17.9 degrees. 

T+20:18 
Spacecraft Separation 
The PSLV fourth stage deploys the IRNSS 1C satellite in orbit. 
