Method to append data to list affects multiple objects

You need to make history an instance attribute, rather than a class attribute that is shared by all instances of the class, by creating it in an __init__ method. I have corrected your code: You need to create instances airplane1 and airplane2 before you can use them and nowhere do you create instance attribute list position, so I have commented out the reference to that and substituted constants for now (you need to correct this). I also added a print statement to demonstrate the output. Also, it is usual to name classes with capital letters.

import pandas

class airplane:
    def __init__(self):
        self.history = []
    def record(self,time,timestep=.1):
        #self.history.append([time*timestep,self.position[0],self.position[1],self.position[2]])
        self.history.append([time*timestep, 0, 1, 2])
    def output(self):
        self.data=pandas.DataFrame(self.history,columns=['time','x','y','z'])
        print(self.data)

airplane1 = airplane()
airplane2 = airplane()
for i in range(10):
    airplane1.record(i)
    airplane2.record(i)

airplane1.output()
airplane2.output()

Prints:

   time  x  y  z
0   0.0  0  1  2
1   0.1  0  1  2
2   0.2  0  1  2
3   0.3  0  1  2
4   0.4  0  1  2
5   0.5  0  1  2
6   0.6  0  1  2
7   0.7  0  1  2
8   0.8  0  1  2
9   0.9  0  1  2
   time  x  y  z
0   0.0  0  1  2
1   0.1  0  1  2
2   0.2  0  1  2
3   0.3  0  1  2
4   0.4  0  1  2
5   0.5  0  1  2
6   0.6  0  1  2
7   0.7  0  1  2
8   0.8  0  1  2
9   0.9  0  1  2