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Value frozen at engine shutdown following a flight until power removed, any IRU
in ALIGN mode, or engine start.
7 Navigation Station
Displays indentifiers of navigation stations in use by FMC for radio position
computation.
Title line displays type of radio station, DME-DME or VOR-DME.
Title line displays NAV STA and data line blanks when no radio position
computation occurring.
8 GPS Navigation (NAV)
Initially displays INHIBIT. GPS data enabled for FMC position updating.
Push -
• inhibits GPS data for FMC position updating and displays ENABLE.
Inhibiting retained through power interruption
• selection when ENABLE displayed enables GPS data for FMC position
updating and displays INHIBIT. Defaults to INHIBIT following flight
completion
9 Bearing/Distance (BRG/DIST) or Latitude/Longitude (LAT/LON)
Initially displays BRG/DIST.
Push –
• displays bearing/distance in IRS (X) line relative to FMC position and
displays LAT/LON
• if distance is zero, bearing displays 000
• selection when LAT/LON displayed or leaving the POS REF pages on
both CDUs returns displays to latitude/longitude and BRG/DIST
The page illustration is shown in the latitude/longitude display format.
December 01, 1999
747 Operations Manual
Flight Management, Navigation -
FMC Cruise
Copyright © The Boeing Company. See title page for details.
D6-30151-425 11.42.23
Position Reference Page 3/3
On position reference page 3, the flight crew can observe the positions and ground
speed from the GPS receivers and the IRUs.
This page can be displayed in the bearing/distance or latitude/longitude format.
The bearing/distance format displays the bearing and distance of the position
sources relative to the active FMC position on POS REF 2/3 page.
1 IRU, GPS Position
Displays position computed by related system.
GPS data blanks if GPS unavailable or inhibited.
2 Ground Speed (GS)
Displays ground speed associated with IRS (X) or GPS (X).
IRS values frozen at engine shutdown following a flight until power removed, any
IRU in ALIGN mode, or engine start.
GPS data blanks if GPS unavailable or inhibited.
2
1 K
PO S R EF /
G S
T
K T
K T
- -- --- -- --- --- -- --- -- ---
< IN DEX >
0
3 3
I R S C
I R S L
I R S R
K T
G P S
K T
G P S L
R
43
43
43
43
43
1
1
N
N
N
N
N
B R G / D I S T
5
6 5
4 3
47` 0 1 .5W 1 2 0 ` 2 7.4
47` 0 1 . W 1 2 0 ` 2 7.
47` 0 1 . W 1 2 0 ` 2 7.4
47` 0 1 . W 1 2 0 ` 2 7.
47` 0 1 .5W 1 2 0 ` 2 7.4
NEXT
PAGE
POS REF 2/3
1 2
December 01, 1999
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
11.42.24 D6-30151-425
Flight Management, Navigation -
FMC Cruise
Progress Pages
Progress Page 1/3
Progress page displays general flight progress data. The FMC Communication
section of Chapter 05, Communications describes CDU position reports.
The page title displays the company flight number entered on theRTE page.
Page one of the progress pages displays general data about:
1 LAST
Displays last waypoint identifer and altitude (ALT), actual time of arrival (ATA),
and fuel (FUEL) remaining at that waypoint.
2 TO
Displays active waypoint identifier.
• waypoints (last, active, and
next)
• destination data
• RTAspeed
• top of descent
/ 3
- -- --- --- -- --- -- --- -- ---
S P D
PROG
1
A L T A T A
C Y N F L 2 4 4 1 3 3 2 Z .
D T G E T A
E NO
L A S T
E T
N E X T
G VE
D S
K AT L
R T A
z .
1 z .
6 1 1 35 5z .
19 2 41 1
60 6 1 51 8
14 02 z/
1
8 2 N M
F U E L
T O
T O T / D
.780
< PO S R EPO RT P O S R E F >
T BC1 23 45 PRO GR ESS
2 9 8
2 8 9
2 7 2
4 8
10
11
1
2
3
4
5
6
9
8
7
October 1, 2000
747 Operations Manual
Flight Management, Navigation -
FMC Cruise
Copyright © The Boeing Company. See title page for details.
D6-30151-425 11.42.25
3 NEXT
Displays waypoint identifier of waypoint after the active waypoint.
4 Destination (DEST)
Displays destination identifier.
Valid entry is any airport in navigation database or waypoint in the flight plan. The
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