737 MAX Flight Crew Operations Manual
Flight Instruments, Displays -
MAX Display System - System
Description
MN-FLT-OH-201
10.20.11
Auxiliary (AUX) Display
The AUX area outboard of each PFD consists of clock and flight information. The
clock and flight information is located in the upper part of the AUX display and
includes:
Clocks
A clock is located on each AUX display. Each clock displays UTC time and date
automatically generated from GPS. In addition to time, the clocks also provide
elapsed time and chronograph functions. On power up, timer is set to 00:00.
Elapsed time starts automatically at weight off wheels and ends at weight on
wheels plus 30 seconds. When on the ground and a new origin airport RUNWAY
is entered on the FMC route page, the elapsed time will reset to 00:00 when the
route is activated. All clock functions except the chrono function are identical for
both clocks. The pilots have independent control of the chrono displays.
Clock Switch (Chronometer Switch)
A remote clock switch, on the outboard portion of the glareshield, operates the
chronometer.
Flight Recorder (DFDR)
The Digital Flight Data Recorder (DFDR) provides a permanent record of
operational and systems information including time, heading, altitude, airspeed,
acceleration, attitude, engine thrust, and flight control surface position.
The recorder is a solid state device and complies with Federal Aviation
Administration and European Aviation Safety Agency requirements for data
sampling rates and number/type of parameters sampled.
Operational and systems information are automatically recorded whenever the
flight recorder is powered.
The DFDR has the following features:
• Continuously records the most recent flight data, saving the most
current data for the last 25 hours of operation
• The DFDR is housed in a sealed container located behind an access door
in the far aft cabin ceiling
• flight number
• transponder code
• SELCAL
• airplane tail number
• UTC time
• date
• elapsed flight time
• chrono dial and
readout
March 1, 2021
