b737 fmc u10.6-changes
DESCRIPTION
B737 fmc u10.6-changesTRANSCRIPT
737.1
737 FMCU10.6 Changes
737 FMCU10.6 Changes
Mark PetersonAvionics-FMC
Boeing Commercial AirplanesMay 2004
Mark PetersonAvionics-FMC
Boeing Commercial AirplanesMay 2004
737.2The Boeing Company
737 FMC737 FMC
• Remaining automatic switches to speed descent mode are removed. Selecting the SPEED prompt is the only way to get into the SPEED descent mode
• “Geometric” Path descent is now basic, not optional
• Switch to path on “point to point” legs
• Nuisance VNAV DISCONNECT message during flare and landing is eliminated
• Remaining automatic switches to speed descent mode are removed. Selecting the SPEED prompt is the only way to get into the SPEED descent mode
• “Geometric” Path descent is now basic, not optional
• Switch to path on “point to point” legs
• Nuisance VNAV DISCONNECT message during flare and landing is eliminated
U10.6 VNAV Basic ChangesU10.6 VNAV Basic Changes
737.3The Boeing Company
737 FMC737 FMC
• Descent path now extends beyond lateral discontinuities
• Approach waypoint altitude constraints cannot be deleted with altitude intervention
• Allow crew modification of runway angle (for VFR approaches). Added a field for angle entry to ARR page, under RW EXT field
• Descent path now extends beyond lateral discontinuities
• Approach waypoint altitude constraints cannot be deleted with altitude intervention
• Allow crew modification of runway angle (for VFR approaches). Added a field for angle entry to ARR page, under RW EXT field
U10.6 VNAV Basic ChangesU10.6 VNAV Basic Changes
737.4The Boeing Company
Geometric Path Descent (Basic)Geometric Path Descent (Basic)
Late Descent or Speed Intervention
VNAV switches from VNAV SPD toVNAV PTH on “point to point” leg
“Non-geometric” option no longer available
737.5The Boeing Company
Descent Path After DiscontinuitiesDescent Path After Discontinuities
Speed/altitudepredictions.
737.6The Boeing Company
Altitude Intervention Cannot DeleteApproach Waypoint Constraints
Altitude Intervention Cannot DeleteApproach Waypoint Constraints
Base approach altitude constraints can be deletedonly via the CDU (to prevent inadvertent deletion)
Cannot be deleted with Altitude Intervention
737.7The Boeing Company
Crew Defined Runway AngleCrew Defined Runway Angle
New field
737.8The Boeing Company
10.6 Optional VNAV Changes10.6 Optional VNAV Changes
Added as part of Common VNAV option:
• Use VNAV SPD instead of overspeed disconnect for unforecast tailwinds or late descent (Common with other Boeing FMCs)
• Remove SPEED DES prompt from DES page
• PATH or SPEED removed from DES page title, since it is now always path, e.g., ACT ECON DES
• Common VNAV will provide increased commonality with other Boeing FMCs and reduce training
Added as part of Common VNAV option:
• Use VNAV SPD instead of overspeed disconnect for unforecast tailwinds or late descent (Common with other Boeing FMCs)
• Remove SPEED DES prompt from DES page
• PATH or SPEED removed from DES page title, since it is now always path, e.g., ACT ECON DES
• Common VNAV will provide increased commonality with other Boeing FMCs and reduce training
737.9The Boeing Company
Common VNAVCommon VNAV
VNAV SPD used for late descent and reversions
Page title changed
SPEED prompt removed
737.10The Boeing Company
Common VNAVCommon VNAV
Descent path recaptured when airplane satisfies capture criteria
737.11The Boeing Company
Other U10.6 FeaturesOther U10.6 Features
• Improve SEL DES WPT page:– Add capability to display names of airports,
navaids, and non-directional beacons
– Added NDB frequencies
– New page format can be used with or without extra data in navigation data base
• Improve SEL DES WPT page:– Add capability to display names of airports,
navaids, and non-directional beacons
– Added NDB frequencies
– New page format can be used with or without extra data in navigation data base
737.12The Boeing Company
SELECT DESIRED WAYPOINTSELECT DESIRED WAYPOINT
Name added in header, and frequencies displayed, matches charts
Old page.
737.13The Boeing Company
SELECT DESIRED WAYPOINTSELECT DESIRED WAYPOINT
Names in the navigation data base may be omitted to keep data basesize smaller for mixed fleet use with older FMCs such as U5. The pagedisplay is the same, minus the names.
Old page
737.14The Boeing Company
Other U10.6 FeaturesOther U10.6 Features
• Speed Propagation (Option)- When a manual speed is entered on CRZ page, it propagates to the rest of the vertical pages (like MD80/90)
• Four additional FIX pages for a total of six (Option)
• Quiet Climb modified to keep CUTBACK enabled during reentry of Vspeeds (Improvement to QCS Option)
• LNAV Change to reduce bank angle at high altitudes (Basic)
• Takeoff Speed Order Checking (V1<Vr<V2) (Basic)
• Speed Propagation (Option)- When a manual speed is entered on CRZ page, it propagates to the rest of the vertical pages (like MD80/90)
• Four additional FIX pages for a total of six (Option)
• Quiet Climb modified to keep CUTBACK enabled during reentry of Vspeeds (Improvement to QCS Option)
• LNAV Change to reduce bank angle at high altitudes (Basic)
• Takeoff Speed Order Checking (V1<Vr<V2) (Basic)
737.15The Boeing Company
Speed PropagationSpeed Propagation
300 entered on CRZ, propagates to DES
737.16The Boeing Company
Four Additional FIX pagesFour Additional FIX pages
737.17The Boeing Company
LNAV Roll Angle ChangeLNAV Roll Angle Change
0.0
5.0
10.0
15.0
20.0
25.0
0 20 40 60 80 100 120
Track Change
Nom
inal
Rol
l Ang
le
U10.5DO-236A FloorU10.6
737.18The Boeing Company
Takeoff Speed Order CheckingTakeoff Speed Order Checking• If an entry is made that violates V1< Vr < V2, the
remaining V speeds are deleted• If an entry is made that violates V1< Vr < V2, the
remaining V speeds are deleted
119
737.19The Boeing Company
The EndThe End