.
set MCP speed to ENG OUT SPD

.
set MCP altitude to MAX ALT or lower altitude as required

.
select LVL CHG.

The airplane then descends at CON thrust and the driftdown airspeed to the MAX ALT. As the driftdown proceeds and airplane gross weight decreases, the maximum altitude may increase.
Note:  The engine out cruise page provides advisory performance data for operating with one engine.

Engine Out Cruise
Engine out cruise operates like normal cruise with engine out cruise speeds. If range is a factor, determine Engine Inoperative LRC speed from the QRH. Thrust limit remains in CON.
Required Time of Arrival (RTA)
VNAV controls cruise speed to achieve a flight crew specified arrival time at a specified waypoint. After the appropriate waypoint and RTA are input to the FMC, the FMC will compute a recommended takeoff time, speeds required to comply with the RTA, and progress information for the flight. If the RTA is not achievable, the RTA UNACHIEVABLE scratchpad message is displayed.
Copyright . The Boeing Company. See title page for details.
11.31.42   March 28, 2005

Flight Management, Navigation -Flight Management System Operation
737 Flight Crew Operations Manual
Data Entry Rules Altitude Entry
Altitudes can be entered into the FMC as three digit (xxx), four digit (xxxx), five digit (xxxxx), or flight level (FLxxx) numbers. The FMC automatically displays altitude or flight level entries in the proper form based on the transition altitude. Some data lines further restrict the valid entry forms.
Three digit entries represent altitude or flight levels in increments of 100 feet. Leading zeros are required.
Examples of three digit (xxx, FLxxx) entries with transition altitude = 10,000 feet:
.
800 feet is entered as 008 or FL008 and displayed as 800

.
1,500 feet is entered as 015 or FL015 and displayed as 1500

.
11,500 feet is entered as 115 or FL115 and displayed as FL115

.
25,000 feet is entered as 250 or FL250 and displayed as FL250.

Four digit entries represent feet, rounded to the nearest ten feet. Leading zeros are
required. This form is used when the altitude does not exceed 9,994 feet.
Examples of four digit (xxxx) entries with transition altitude = 18,000 feet:

.
50 feet is entered as 0050 and displayed as 50

.
835 feet is entered as 0835 and displayed as 840

.
1,500 feet is entered as 1500 and displayed as 1500

.
8,500 feet is entered as 8500 and displayed as 8500

.
9,994 feet is entered as 9994 and displayed as 9990.

Five digit entries represent feet, rounded to the nearest ten feet. This form is used
when the altitude exceeds 9,994 feet.
Examples of five (xxxxx) digit entries with transition altitude = 4,000 feet:

.
50 feet is entered as 00050 and displayed as 50

.
835 feet is entered as 00835 and displayed as 840

.
1,500 feet is entered as 01500 and displayed as 1500

.
8,500 feet is entered as 08500 and displayed as FL085

.
9,995 feet is entered as 09995 and displayed as FL100

.
11,500 feet is entered as 11500 and displayed as FL115

.
25,000 feet is entered as 25000 and displayed as FL250.
Negative altitude entries are allowed to –1000 feet.

Airspeed Entry
Airspeeds can be entered into the FMC as calibrated airspeed or Mach number. Calibrated airspeeds are entered as three digits (xxx) in knots. Mach numbers are entered as one, two, or three digits following a decimal point.
Copyright . The Boeing Company. See title page for details.
Flight Management, Navigation -Flight Management System Operation 737 Flight Crew Operations Manual

Data Pairs
Many CDU pages display data in pairs separated by a slash “/.” Examples of these pairs include wind direction/speed and waypoint airspeed/altitude restrictions. When entering both values in a pair, the slash is inserted between the values. When it is possible to enter only one value of the pair, the slash may not be required. When entering only the outboard value of a pair, the trailing or leading slash may be entered, but is not required before transferring to the data line. When entering the inboard value of a pair, the trailing or leading slash must be entered before transferring to the data line. Omission of the required slash normally results in an INVALID ENTRY message.
Bearing Entry
Entry of a bearing value requires three digits. For example, key 090, not 90. A bearing entry of 360 is displayed as 000.
Plus/Minus Signs
When entering temperature or an along–track displacement distance, positive values are assumed by the FMC and + signs are not required. For negative values, key in the – sign.
　
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