Speed reference selector (outer) .................................................. SET Digital readout is removed.
Note: When the flap lever is set to any takeoff flap setting above flaps 1, a bug comes into view for the next smaller flap maneuvering speed, between takeoff flaps and flaps up. For example, if the flap lever is set to 15 for takeoff, a bug for flaps 5 maneuvering speed will appear. For a flaps 1 takeoff, the flaps 1 maneuvering speed will be displayed.
To set reference airspeed bugs for approach: Speed reference selector (outer) ...................................................WT Default weight of 32,000 kgs is displayed. Speed reference selector (inner) .................. Set current gross weight Flaps up maneuver speed bug is displayed. Speed reference selector (outer) ...............................................VREF Default speed of 80 knots is displayed. Speed reference selector (inner) ...............................Set VREF speed YA613 - YC413, YK101 - YK104 The green VREF bug and white VREF +15 bug are shown when a speed greater than 80 knots is set. YD651 - YD655 The green VREF bug and white VREF +20 bug are shown when a speed greater than 80 knots is set. Note: If V1 or VR is selected in flight, INVALID ENTRY is displayed. To set the spare bug, if desired:
Speed reference selector (outer) .................................... Spare bug Default speed of 60 knots is displayed. Speed reference selector (inner) ............................................... Set Set speed as desired. Speed reference selector (outer) .................................................. SET Digital readout is removed.
Copyright . The Boeing Company. See title page for details.
Supplementary Procedures -Flight Instruments, Displays 737 Flight Crew Operations Manual
HUD System Procedures YC153, YC154
HUD system procedures supplement normal procedures and should be accomplished when applicable.
Flight Deck Preparation
If the HUD will be used for takeoff, or configured for a possible return for landing, accomplish the following during the flight deck preparation:
HUD System ........................................................................................Set
Combiner – Lowered, cover removed
Self test – Accomplish
Runway Data – Set in CDU
Enter glideslope angle for possible return for landing
Enter runway length
Enter TDZE (if available) or field elevation
Mode - Verify NP mode set
For low visibility takeoff, enter ILS frequency and course.
Descent and Approach
If HUD will be used for approach and landing, accomplish the following steps:
Prior to completing the DESCENT–APPROACH checklist:
HUD System ..................................................................................Set
Combiner – Lowered, cover removed
Runway Data – Set in CDU
Enter glideslope angle
Enter runway length
Enter TDZE (if available) or field elevation.
Mode - Verify NP mode set
Copyright . The Boeing Company. See title page for details.
Supplementary Procedures -Flight Instruments, Displays 737 Flight Crew Operations Manual
Prior to intercepting final:
Select appropriate mode for approach
Verify appropriate mode armed.
Note: During approach, the first officer will monitor the HUD
ANNUNCIATOR panel.
Landing
If HUD will be used for a CAT II or CAT IIIa approach:
At glideslope capture:
Verify AII or AIII mode active.
Shutdown
Accomplish the following step during the Shutdown Procedure:
HUD Combiner ............................................................................ Stowed If the airplane will be secured, install cover before stowing.
Copyright . The Boeing Company. See title page for details.
Supplementary Procedures -Flight Instruments, Displays 737 Flight Crew Operations Manual
Takeoff Using HUD
Copyright . The Boeing Company. See title page for details.
On RADAR vectors
HDG SEL
.
Appropriate pitch mode
.
Select/verify HUD NP mode.
Flaps 1 .
LNAV or appropriate roll mode
.
VNAV or appropriate pitch mode
.
Approaching intercept heading
Flaps 5.
Localizer capture
Final approach. course heading
Intercept Heading
Select APP
.
Second A/P CMD
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