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Note E - Property and Equipment (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

March 31,

  

December 31,

 
  

2024

  

2023

 

Flight equipment

 $4,055,379  $3,865,049 

Ground equipment

  72,653   72,463 

Leasehold improvements, facilities and office equipment

  43,659   42,120 

Aircraft modifications and projects in progress

  551,630   638,631 
   4,723,321   4,618,263 

Accumulated depreciation

  (1,856,986)  (1,797,494)

Property and equipment, net

 $2,866,335  $2,820,769