Copyright . The Boeing Company. See title page for details.
Supplementary Procedures -Flight Management, Navigation 737 Flight Crew Operations Manual

Observe the MOD RTE LEGS page changes to ACT.
Note:  These created waypoints are stored in the temporary navigation data base for one flight only.
Entering a Lateral Offset
RTE page ........................................................................................ Select Observe the OFFSET prompt displayed. LATERAL OFFSET page .............................................................. Select Observe dash prompts for OFFSET DIST. OFFSET DIST .................................................................................Enter Enter desired offset distance using format Lxx or Rxx for left or right offset up to 99 nm. Observe dash prompts for START WAYPOINT and END WAYPOINT.
START/END WAYPOINT ...............................................................Enter If no start/end waypoint is entered, offset will begin/end at first/last valid offset leg.
Change SID or Runway
This entire procedure must be accomplished when a SID is used and the runway or SID is changed. This will prevent the possibility of incorrect routing or inadequate obstacle clearance.
DEPARTURES page ...................................................................... Select
RUNWAY....................................................................................Reselect
SID ..............................................................................................Reselect
TRANSITION (if required) ........................................................Reselect
RTE LEGS page ............................................................................. Select
WAYPOINT SEQUENCE and ALTITUDES................................Check

Modify as necessary to agree with clearance. EXEC key ........................................................................................ Push
Change STAR, PROF DES, or APP
The associated airport must be entered as route origin or destination.
Copyright . The Boeing Company. See title page for details.

Supplementary Procedures -Flight Management, Navigation
737 Flight Crew Operations Manual
ARRIVAL page .............................................................................. Select
STAR or PROFILE DESCENT (if required) ................................. Select
TRANSITION (if required)............................................................Select
APPROACH ...................................................................................Select
APPROACH TRANSITION (if required) .....................................Select
RTE LEGS page .............................................................................Select
WAYPOINT SEQUENCE .......................................................... CHECK

Modify as necessary to agree with clearance. EXEC key .........................................................................................Push
Delete Procedure Turn
DEP/ARR page...............................................................................Select Approach ........................................................................................Select Reselecting same approach or selecting a new approach will remove procedure turn and select a straight in approach on the LEGS page.
EXEC key .........................................................................................Push or RTE LEGS page ........................................................................Select Select last waypoint of procedure turn to scratchpad and overwrite PROC TURN line. Check waypoint sequencing to comply with clearance. EXEC key....................................................................................Push
Other Operations FMC Navigation Check
If the IRS NAV ONLY, VERIFY POSITION, or UNABLE REQUIRED NAV PERFORMANCE – RNP message is displayed in the scratch pad, or course deviation is suspected, accomplish the following as necessary to ensure navigation accuracy:
Copyright . The Boeing Company. See title page for details.
Supplementary Procedures -Flight Management, Navigation

737 Flight Crew Operations Manual
Actual position ................... Determine and compare with FMC position Determine actual airplane position using raw data from VHF navigation or ADF radios.
If radio navaids are unavailable:
FMC position .................................... Compare with the IRS position Use the POS SHIFT page of the FMC CDU. If the two IRS positions are in agreement and the FMC position is significantly different, the FMC position is probably unreliable. The POS SHIFT page may be used to shift FMC position to one of the IRS positions. This is accomplished by line selecting the IRS or radio position and then pressing the EXEC Key.
　
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