Normal Procedures Flashcards
B737 COLD WEATHER STARTS:
Accomplish a normal start with the following considerations:
o If the engines have been cold soaked at ambient temperatures below -40°C, do not start or
motor the engine.
o Preheat and additional maintenance procedures are required. At an ambient temperature
below -35°C.
o Idle engines for two minutes before changing the thrust lever position
Wing Anti-Ice:
Must be on during all ground operations between engine start and takeoff, when
icing conditions exist or are anticipated, unless the airplane is protected by the application
of Type II or Type IV fluid
Engine Run-Up/Ice Shedding
The Fan Blade Ice Shedding Procedure may be applied during
conditions of freezing rain, freezing drizzle, freezing fog, or heavy snow. Weather conditions of
one statute mile visibility or less in snow or blowing snow are considered high risk conditions for
the formation of fan blade ice.
Before Setting Takeoff Thrust: oil temps NG? Max?
B737NG: Check for engine oil temperature increase.
B737MAX: Ensure oil temperature is at or above 31°C. The approximate time for a cold
soaked engine to reach an oil temperature of 31°C ranges from 3 minutes at 0°C to 8
minutes at -32°C
Time to touch down for ILS approaches
Cat 1- 15 seconds
Cat 2- 8 seconds
Cat 3 - 4 seconds
Max holding speeds
Below 6000’ - 200kts max
6000-14000’ - 230kts max
Above 14000’ - 265kts max
When commencing a RNP or LNAV/VNAV approach what is the correct sequence for manipulating the MCP panel?
Set “FIELD” elevation
Then set VNAV
When given a heading from ATC what is the correct order to manipulate the MCP panel?
Center heading bug
Select “heading select”
Then turn the heading bug.
This ensures the turn commences in the correct direction.
Minimum Oil Quantity prior to engine start:
NG non etops- 13
Etops- 18
Max non Etops- 15
etops- 19
When does the Takeoff Performance OAT Discrepancy Alerting occur?
After the first engine start, if the sensed OAT and the OAT entered in the FMC differ by
more than 6 degrees, the message OAT DISGAREE-TAKEOFF SPEEDS DELETED will
appear on the FMC scratch pad and the takeoff data will be cleared
What is the max speed within 10 miles and 3000’ of an airport?
200kts
Cold weather corrections: use Cold Weather Requirements table (4.13.5.3)
Always correct DA/MDA when at or below 0C
Where applicable, temperature correct MDA then add 50 feet to create a DA
Wind corrections on the approach are as follows?
1: When using auto throttle for landing ie: auto land operations it is just VREF +5 knots
2: All other landings it is VREF + wind additive
Wind additive is 1/2 the steady wind value plus all of the gust factor but never to exceed VREF +15
Ref: 4.13.7
Cold weather corrections on the MAX
(B737MAX) Prior to commencing the instrument approach, the Vertical
Situational Display (VSD) must be selected for display whenever temperature
corrected altitudes are manually entered
PAPI OR VASIS lights are not considered sources of required visual reference to continue an approach below minimums
False