EXHIBIT 11

ESTERLINE TECHNOLOGIES CORPORATION

Computation of Basic and Diluted Earnings Per Common Share

For the Three and Six Month Periods Ended April 30, 2010 and May 1, 2009

(Unaudited)

(In
thousands, except per share amounts)



|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|--------------------------------------------------------------------------------- |  | ------------------ | ------- | ---------------- | - | ------------- |  | ---------- | ------- |  | - | -------
|                                                                                  |  | Three Months Ended |         | Six Months Ended
|                                                                                  |  | April 30,2010      |         | May 1,2009       |   | April 30,2010 |  | May 1,2009
|                                                                                  |  |                    |         |                 
|Net Sales                                                                         |  | $                  | 387,620 |                  | $ | 359,502       |  | $          | 726,980 |  | $ | 669,219
|Gross Margin                                                                      |  |                    | 129,198 |                  |   | 112,598       |  |            | 233,727 |  |   | 214,750
|                                                                                  |  |                    |         |                 
|Net Earnings From Continuing Operations   Attributable to Esterline               |  | $                  | 29,648  |                  | $ | 25,338        |  | $          | 42,373  |  | $ | 36,825 
|Net Earnings From Discontinued   Operations Attributable to Esterline             |  |                    | 0       |                  |   | 375           |  |            | 0       |  |   | 15,831 
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|Net Earnings Attributable to Esterline                                            |  | $                  | 29,648  |                  | $ | 25,713        |  | $          | 42,373  |  | $ | 52,656 
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|                                                                                  |  |                    |         |                 
|Basic                                                                             |  |                    |         |                  |   |               |  |            |         |  |   |        
|                                                                                  |  |                    |         |                 
|Weighted Average Number of   Shares Outstanding                                   |  |                    | 29,908  |                  |   | 29,705        |  |            | 29,848  |  |   | 29,684 
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|                                                                                  |  |                    |         |                 
|Earnings Per Share Attributable to Esterline  Basic:                             |  |                    |         |                  |   |               |  |            |         |  |   |        
|Continuing Operations                                                             |  | $                  | .99     |                  | $ | .85           |  | $          | 1.42    |  | $ | 1.24   
|Discontinued Operations                                                           |  |                    | .00     |                  |   | .02           |  |            | .00     |  |   | .53    
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|Earnings Per Share Attributable     to Esterline  Basic                          |  | $                  | .99     |                  | $ | .87           |  | $          | 1.42    |  | $ | 1.77   
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|                                                                                  |  |                    |         |                 
|Diluted                                                                           |  |                    |         |                  |   |               |  |            |         |  |   |        
|                                                                                  |  |                    |         |                 
|Weighted Average Number of   Shares Outstanding                                   |  |                    | 29,908  |                  |   | 29,705        |  |            | 29,848  |  |   | 29,684 
|Net Shares Assumed to be Issued   for Stock Options                               |  |                    | 498     |                  |   | 124           |  |            | 464     |  |   | 163    
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|Weighted Average Number of Shares   and Equivalent Shares   Outstanding 
Diluted |  |                    | 30,406  |                  |   | 29,829        |  |            | 30,312  |  |   | 29,847 
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|                                                                                  |  |                    |         |                 
|Earnings Per Share Attributable to Esterline  Diluted:                           |  |                    |         |                  |   |               |  |            |         |  |   |        
|Continuing Operations                                                             |  | $                  | .98     |                  | $ | .85           |  | $          | 1.40    |  | $ | 1.23   
|Discontinued Operations                                                           |  |                    | .00     |                  |   | .01           |  |            | .00     |  |   | .53    
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |        
|Earnings Per Share Attributable     to Esterline  Diluted                        |  | $                  | .98     |                  | $ | .86           |  | $          | 1.40    |  | $ | 1.76   
|                                                                                  |  |                    |         |                  |   |               |  |            |         |  |   |