 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS: B08669      ]
 ] T.A. MC CLAIN      ]    BFS PROGRAM NOTE         ]                  ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:05/07/87 REV]
 ] D/282-440 X-4986   ]      RELEASE NOTE ( )       ] 3/26/86          ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] OI8A AND SUBS                 ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( ) BSS(X) GNC( ) SEQ( ) SM/SP( ) IPL( )]1,3,6                    ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: DISPLAY, RUNWAY, KEYBOARD                        ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MG038101/3.4 - 3.3.8.2                         ]
 ]_____________________________________________________________________]
 ] TITLE: NAV DELTA COORDINATE SYSTEMS UPDATE                          ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] WHEN NAV DELTAS ARE ENTERED MANUALLY VIA ITEMS 10-15,               ]
 ] THE VALUES ENTERED AND DISPLAYED, ARE IN REFERENCE TO THE XYZ       ]
 ] (RUNWAY) COORDINATE SYSTEM.                                         ]
 ]                                                                     ]
 ] HOWEVER, WHEN THESE VALUES ARE OBTAINED BY PERFORMING A PASS/BFS    ]
 ] STATE VECTOR TRANSFER, (ITEM 17), THE VALUES DISPLAYED ARE IN       ]
 ] REFERENCE TO THE UVW COORDINATE SYSTEM.  THESE VALUES ARE DISPLAYED ]
 ] IN ALPHABETICAL ORDER, THAT IS, WITH DELTA U, V, AND W DISPLAYED    ]
 ] AS DELTA X, Y, AND Z, RESPECTIVELY FOR THE POSITION DELTAS, AND     ]
 ] SIMILARLY FOR THE VELOCITY DELTAS.                                  ]
 ]                                                                     ]
 ] BRIEFLY, IN RUNWAY COORDINATES, THE ORIGIN IS AT THE RUNWAY CENTER  ]
 ] AT THE THRESHOLD, WITH +X BEING THE DIRECTION OF LANDING, +Y BEING  ]
 ] CROSSRANGE RIGHT, AND +Z BEING DOWN.  IN UVW COORDINATES, +U IS     ]
 ] FROM EARTH CENTER UPWARD, +V IS APPROXIMATELY ALONG TRACK, AND +W   ]
 ] IS CROSSTRACK LEFT.                                                 ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ] WHEN A PASS/BFS STATE VECTOR TRANSFER (ITEM 17) IS EXECUTED, NOTE   ]
 ] THAT THE NAV DELTAS DISPLAYED ARE IN THE UVW COORDINATE SYSTEM.     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]RI:<S> D. YEE             DATE 05/07/86]                             ]
 ] --------------------         ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 07/13/88]                             ]
 ] --------------------         ---------] JACK BOYKIN        08/17/88 ]
 ]PF MGR: MICHAEL BRIEDEN   DATE 08/05/88]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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