LEADER 00530nam  2200169z- 450 
001 9910693706603321
035   $a(CKB)4970000000042594
035   $a(EXLCZ)994970000000042594
100   $a20240129c2001uuuu  -u-            -
101 0 $aeng
200 00$aNational Airspace System : long-term capacity planning needed despite recent reduction in flight delays
210   $aWashington, D.C
517   $aNational Airspace System
906   $aDOCUMENT
912   $a9910693706603321
996   $aNational Airspace System$93424084
997   $aUNINA