Boeing 737-800 - Navigation Performance Scales (NPS) Indications

737 Flight Crew Operations Manual
Flight Instruments, Displays -
PFD/ND – Displays
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D6-27370-866-EGP 10.11.13
Navigation Performance Scales (NPS) Indications
YW273, YW274
1 Scale ID Annunciation (white)
• displayed above the left corner of ADI
• indicates the source of displayed deviation for each scale
• displayed when LNAV, VNAV, HDG SEL, or TO/GA are engaged
• displayed when current aircraft position is laterally within 1nm or 2 x
RNP of the flight plan route – will go out of NPS if lateral limits
exceeded
• Possible annunciations include:
• LNAV/VNAV – (LNAV and VNAV deviations)
• LOC/VNAV – (ILS localizer course with VNAV deviation)
• LNAV/ G/S – (LNAV deviation with glideslope)
• ILS – (ILS approach)
IBFI/130
o
DME 3.4
LNAV/VNAV
1
0
1
0
1
0
1
0
2
0
2
0
2
0
1
2
5
4
3
3
4
September 15, 2016