| ICAO 3-Letter Designator:  | 
      
        BTU | 
    
|---|---|
| Call Sign: (Telephony)  | 
      
        ROLLS | 
    
| Aircraft Company: | ROLLS ROYCE LTD. (BRISTOL ENGINE DIVISION) | 
| Country of Origin: | 
        UNITED KINGDOM
                 
               | 
    
| Previous Call Sign: | BTQ - BOUTIQUE | 
| Next Call Sign: | BTX - BEETLE |