Ability - Big Peaks
252 EV Speed, 252 EV Attack, 4 EV HP
Item - Life Orb/Leftovers
Pidgeot is not the best option for a flying member on a team, but it can work out in certain situations. I´d go with a Life Orb as Pidgeot can do some damage due to its average attack, good speed and then regain some HP with Roost. Although, Leftovers can help it last longer, if it gets a status problem, then is pretty much a death bird.
Return/Quick Attack - STAB moves, Return has good power, is reliable and has no recoil damage, Quick Attack is weaker, but priority moves are really useful in competitive battles..
Brave Bird/Fly - STAB moves, both have good power, can hit any foe in Triple Battles, good accuracy, Brave Bird is stronger, but has recoil damage, good option to use when HP is low.
Steel Wing - Coverage against Ice and Rock weaknesses, decent power and accuracy, there´s a chance to boost the bird´s defense which can´t be lowered due to its ability.
Roost - Since Pidgeot is kind of bulky, it can restore good HP and take more hits, recover HP from Brave Bird´s recoil and Life Orb´s recoil.
I hope it works.