737 Flight Crew Operations Manual
Normal Procedures Chapter NP
Amplified Procedures Section 21
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D6-27370-866-EGP NP.21.1
21 Amplified ProceduresAmplified ProceduresFile H ighlight
Preliminary Preflight Procedure – Captain or First Officer
The Preliminary Preflight Procedure assumes that the Electrical Power Up
supplementary procedure is complete.
A full IRS alignment is recommended before each flight. If time does not
allow a full alignment, do the Fast Realignment supplementary
procedure.
IRS mode selectors ............................................... OFF, then NAV
Verify that the ON DC lights illuminate then extinguish.
Verify that the ALIGN lights are illuminated.
The UNABLE REQD NAV PERF-RNP message may show until
IRS alignment is complete.
Verify that the following are sufficient for flight:
• oxygen pressure
• hydraulic quantity
• engine oil quantity
Do the remaining actions after a crew change or maintenance action.
Maintenance documents ...................................................... Check
FLIGHT DECK ACCESS SYSTEM switch ............ Guard closed
Emergency equipment ......................................................... Check
Fire extinguisher – Checked and stowed
Crash axe – Stowed
Escape ropes – Stowed
Other needed equipment – Checked and stowed
ELT switch ............................................................... Guard closed
Verify that the ELT light is extinguished.
PSEU light ......................................................Verify extinguished
GPS light ........................................................Verify extinguished
SERVICE INTERPHONE switch ..........................................OFF
September 24, 2015
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