Here is the full list of all 39 Piloteer achievements.
Land successfully 1,000 times
Crash 1,000 times
Fly between the basket and the hot air balloon
Get hit by a plane's propellors
Rank up to a Major
Land on a ferris wheel car, then let it take you around a full cycle
Land inside the back of the motor boat at The Pier
Stay in the air for an entire minute
Fly as high as possible
Land successfully 500 times
Crash 500 times
Hit 100 birds while in the air
Hit 50 birds while in the air
Hit 10 bird while in the air
Get hit by a car while standing up
Rank up to a Captain
Do 100 front flips
Do 100 backflips
Land successfully 100 times
Crash 100 times
Do 10 front flips
Land successfully 50 times
Land in the water
Crash 50 times
Do a front flip
Rank up to a Cadet
Land successfully 10 times
Do 10 backflips
Do a backflip
Crash 10 times
Land successfully once
Crash once
Rank up to an Aviator
Rank up to a Piloteer
Rank up to a Platinum Cadet
Rank up to a Platinum Captain
Rank up to a Platinum Major
Rank up to a Platinum Aviator
Rank up to a Platinum Piloteer