HYDROPAC messages in force 200800Z apr 2001

Original warning text

1. HYDROPAC MESSAGES IN FORCE 200800Z APR 2001. ONLY THOSE
   MESSAGES ISSUED DURING THE LAST SIX WEEKS ARE LISTED HEREIN.
   2001 SERIES: 375(93), 379(62), 384(71), 390(61), 417(62),
   420(GEN), 424(63), 430(94,97), 431(19,97), 436(75), 446(63),
   452(74), 454(61), 455(81), 461(95), 462(94,95), 463(94),
   469(94,95), 470(71), 474(94,95), 475(95), 477(81), 481(96),
   483(22), 485(81,91), 486(74), 492(73), 495(61), 496(71), 502(61),
   507(93), 508(63), 509(61), 517(93,94), 518(75), 522(22),
   523(94), 528(71), 530(81), 536(19,97), 539(61), 541(63), 544(63),
   550(95), 556(21,83), 559(GEN), 560(93), 561(22), 563(63), 564(63),
   565(63), 567(74), 568(74), 569(73,74), 570(63), 573(71,93),
   574(62), 576(63), 578(74), 579(61), 580(62), 582(GEN), 583(63),
   584(63), 585(74).
2. THE SUMMARY OF ALL HYDROPAC MESSAGES IN FORCE AS OF 14 DEC 2000
   IS GIVEN IN SEC III OF NM 53/00. WARNINGS ISSUED DURING THE
   SUBSEQUENT QUARTERS ARE SUMMARIZED IN NM 13/01.
3. CANCEL HYDROPAC 1092/99, 516/01, 549/01, 577/01.