Ground Lock Pin Installation for Main Gear 500
10-11-0Page 204 Figure 203 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 15/67
3. Park Airplane
A. Pitot probe covers and static port covers are recommended when the airplane is parked for more than a standard turnaround.
WARNING: PITOT PROBE COVERS AND STATIC PORT COVERS ARE RECOMMENDED WHEN THE AIRPLANE IS PARKED FOR MORE THAN A STANDARD TURNAROUND OR WHEN CONDITIONS SUCH AS INSECT ACTIVITY, DUST STORMS OR VOLCANIC ASH MAY INCREASE THE THE RISK OF PITOT PROBE OR STATIC PORT CONTAMINATION. A PITOT PROBE OR STATIC PORT SYSTEM BLOCKED BY FOREIGN OBJECTS SUCH AS INSECTS MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
B. Taxi or tow airplane into position designated for parking. If the airplane is towed into position, install main and nose gear ground lock assemblies before towing (Fig. 203 and 204). Terminate maneuver with airplane headed into the prevailing wind.
NOTE: Installation of nose gear lockpin is optional when airplane is being towed with gear hydraulic system pressurized.
C. Install nose gear downlock assembly when airplane stops after taxiing if the airplane is to be packed or maintenance accomplished. If the airplane is to be jacked, install main gear downlock assemblies jacked, install main gear downlock assemblies (Fig. 204).
D. If high winds are expected, refer to 10-21-0, High Wind Conditions Mooring.
E. Ground airplane (Ref. Chapter 20, Static Grounding).
F. If parking area is covered by ice or packed snow, place a mat or suitable material under and around tires to prevent tires from becoming frozen to the ground.
G. Turn on battery switch.
H. Set parking brake by depressing brake pedals and pulling up the parking brake handle on the captain's control stand. Relieve pressure on brake pedals before releasing the parking brake handle.
I. Place wheel chocks in front of and behind at least one set of main gear wheels per truck.
J. To release parking brakes, the captain's or first officer's brake pedals need only to be fully applied and then released. A light on the control stand next to the parking brake lever, is provided to indicate when the parking brake is on.
CAUTION: DO NOT LEAVE PARKING BRAKES ON ANY LONGER THAN NECESSARY WHEN BRAKES ARE HOT, FOLLOWING A HIGH ENERGY STOP, OR STOP OTHER THAN NORMAL. UNDER STATIC PRESSURE, HOT BRAKE SURFACES TEND TO FUSE TOGETHER.
K. Turn off battery switch if no longer required.
L. Set stabilizer, aileron and rudder trim control to ZERO.
M. Raise flaps to the fully up position.
CAUTION: DO NOT RESTRAIN THE CONTROL COLUMN OR RUDDER PEDALS. DOING SO COULD RESULT IN CONTROL SYSTEM DAMAGE.
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Ground Lock Pin Installation for Nose Gear 500
10-11-0Page 206 Figure 204 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/98
N. Place aileron control wheel in neutral.
O. Close all lavatory doors when airplane is parked to prevent the spreading of any possible fire.
P. Ensure that electronic access door is closed.
Q. Install plugs and covers as required.
R. In cold weather, it is necessary to drain fuel tank sumps prior to fueling to remove water from fuel tanks if the airplane has been idle for more than 45 minutes prior to fueling. Drain fuel tank sumps again after refueling if the airplane has been idle for 2 hours or more after refueling. In cold weather, water can freeze and not let the drain valves open.
S. Install the covers on the pitot probes.
(1) Install the engine inlet and exhaust covers.
WARNING: WHEN THE PITOT PROBES ARE COVERED, MAKE SURE THAT CONDITION IS VISIBLE FROM THE GROUND. IN ADDITION, ATTACH A TAG TO THE LEFT CONTROL WHEEL IN THE FLIGHT DECK AS A REMINDER THAT PITOT PROBES ARE COVERED, FAILURE TO OBSERVE AND REMOVE COVERINGS OVER PITOT PROBES BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
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