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Basis of preparation and significant accounting policies (Tables)
12 Months Ended
Mar. 31, 2022
Basis of preparation and significant accounting policies  
Summary of annual depreciation rates

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Rate of

 

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Depreciation

​

Hangar and buildings

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3.33 to 5

%

Plant and equipment (excluding aircraft)

​

20 to 33.3

%

Fixtures and fittings

​

20

%

Motor vehicles

​

33.3

%

Schedule of estimates of useful lives and residual values

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Number of Owned Aircraft

    

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Aircraft Type

  

at March 31, 2022

  

Useful Life

  

Residual Value

Boeing 737s *

  

471 (a)

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23 years from date of manufacture

  

15% of current market value of new aircraft, determined periodically

*Including 61 new B737-8200s

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(a)The Group operated 500 aircraft as of March 31, 2022, of which 29 were leased Airbus A320 aircraft.