PMC switches .................................................................................... ON Verify INOP lights extinguish.
PASSENGER OXYGEN switch.............................................NORMAL Guard – Down PASS OXY ON light – Extinguished CAUTION: Switch activation will cause deployment of passenger oxygen masks.
CREW OXYGEN pressure indicator.............................................Check
Verify pressure meets dispatch requirements.
SERVICE INTERPHONE switch ......................................... As required
IRS mode selectors...........................................................................NAV
Note: Prior to commencing the alignment procedure the airplane must be parked and not moved until alignment is complete and the ALIGN lights extinguish.
Verify both ON DC lights illuminate momentarily followed by steady illumination of the ALIGN lights. The ALIGN lights will remain illuminated until the IRS enters the NAV mode. If aligning above 70° 12.0’ and less than 78° 15.0’, refer to “IRS HIGH LATITUDE ALIGNMENT” procedure.
Circuit breakers (P–18) ..................................................................Check
Copyright . The Boeing Company. See title page for details.
NP.20.4 June 4, 2004
Normal Procedures -Amplified Procedures 737 Operations Manual
Verify circuit breakers are in or collared in compliance with dispatch
requirements. Rain repellent (as installed) .................................................................................. Check
Verify float above line and shutoff valve handle is in vertical position. Crash axe ......................................................................................Stowed
Exterior Inspection
Prior to each flight, the flight crew must accomplish or verify that the maintenance crew has accomplished the following checks.
Note: Alert ground personnel before pressurizing hydraulic system. ELECTRIC HYDRAULIC PUMP switches......................................ON System A and B pressure – 2800 PSI minimum Parking brake .......................................................................................Set
Parking brake warning light – Illuminated Exterior lights ................................................................................ Check General airplane condition............................................................. Check
Check airplane free of damage and fluid leakage. Probes, sensors, ports, vents and drains..............................Unobstructed Doors, latches and access panels (not in use) ................Properly secured Tires, brakes and wheels ................................................................ Check
If brake wear indicator pins are even with brake housing, check with maintenance. Gear struts and doors ..................................................................... Check Verify door seals secure and struts not fully compressed. Ground locking pins ................................................................. Removed
Nose gear steering lockout pin ...................................................... Check Installed if pushback or tow out will be accomplished, otherwise removed.
Normal Procedures -Amplified Procedures
737 Operations Manual
Nose wheel snubbers ................................................................... In place
Wheel well light switches .......................................................NORMAL
Oxygen pressure relief green disc ............................................... In place
Cargo compartments ......................................................................Check
Check condition of compartments, tie–downs and lights. Ram air deflector door .............................................................. Extended Flight control surfaces .........................................................Unobstructed
Check all surfaces clear of ice, snow, or frost. Fuel measuring sticks.....................................................................Check
Verify measuring sticks agree with alignment marks.
A & B Hydraulic reservoir quantity indicators .................... RF or above
Brake accumulator indicator ......................................2800 psi minimum
APU fire control handle ...................................................................... UP
Outflow valve............................................................................Full open
APU fire red and yellow discharge indicators ............................ In place
Engine fire extinguishers................................................................Check
Verify pressure adequate per bottle data plate. ELECTRIC HYDRAULIC PUMP switches ....................................OFF Exterior lights ........................................................................ As required 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300机组操作手册Flight Crew Operations Manual FCOM 1(33)
