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CAUTION: ANTI-SKID PROTECTION IS NOT AVAILABLE. REFER TO EMERGENCY
BRAKES, SECTION 4, FOR MORE INFORMATION.
A. Pull parking brake handle up approximately 1/4 - 1/2 inch.
B. Wait for braking action to commence. Increase brake handle travel as required.
C. As the airplane decelerates, modulate (meter) the parking brake pressure as required to
prevent sudden stopping or tire skidding.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
FAA APPROVED 3-31
31 May 2000
3-05-70: Uncommanded Brake Pressure During Landing Rollout (Brake-By-Wire):
1. Apply Reverse Thrust as necessary.
2. Use rudder and/or Nose Wheel Steering to maintain directional control of airplane.
3. Discontinue any attempt to apply brakes - FEET OFF THE BRAKE PEDALS.
4. REAPPLY brake pressure after one (1) second.
5. If the uncommanded or undesired Brake Pressure is still present and airplane cannot be
controlled, DISCONTINUE BRAKE APPLICATION.
6. When ground speed is less than 80 knots, use the metering parking brake to stop airplane.
CAUTION: ANTI-SKID PROTECTION IS NOT AVAILABLE. REFER TO EMERGENCY
BRAKES, SECTION 4, FOR MORE INFORMATION.
A. Pull parking brake handle up approximately 1/4 - 1/2 inch.
B. Wait for braking action to commence. Increase brake handle travel as required.
C. As the airplane decelerates, modulate (meter) the parking brake pressure as required to
prevent sudden stopping or tire skidding.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
3-32 FAA APPROVED
31 May 2000
3-05-80: Auxiliary Braking (HMAB):
FOR AIRPLANES SN 1183, SN 1214 AND SUBS. AND AIRPLANES SN 1000 THRU 1213
WITH ASC 307
The Auxiliary Brake System is available in the event of a combined/utility hydraulic system
failure. The Auxiliary Brake System will engage automatically when the brake pedals are
depressed, provided the Auxiliary hydraulic pump is ARMED and Combined Hydraulic pressure
is below 1500 psi.
Auxiliary brake operation and performance are similar to normal braking if applied pressure is
held below the anti-skid range. If sufficient pressure is applied to enter anti-skid operation,
braking will become cyclic with large releases and recoveries occurring approximately three (3)
times per second. Reducing applied pressure should stop the cycling. Skid pressures vary with
airplane weight and runway surface and can range from 1200 psi on dry concrete to as little as
300 psi if wet.
The following procedure should be used for landing with the Auxiliary Brake System.
1. Select Hydraulic System display on EICAS to show Applied Brake Pressure.
2. Auxiliary Hydraulic Pump ................................................................................................... ON
3. Braking.............................................................................................................AS REQUIRED
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
FAA APPROVED 3-33
31 May 2000
3-06-00: BRAKE SYSTEM MESSAGES
3-06-10: Brake Fail Message (Brake-By-Wire):
Failure of the brake system to provide brake pressure will be indicated by the illumination of the
BRAKE FAIL Amber Message on the EICAS. Use the following procedure to validate the
message and check the brake ECU:
1. ANTI-SKID ...........................................................................................................CHECK ON
2. Select Applied Brake Pressure Display on DU 4.
3. If airborne,
BRAKE NUTCRKR ORIDE Switch ......................... DEPRESS and hold for 10 seconds and
continue holding while performing Step 4.
4. DEPRESS brake pedals individually and check APPLIED BRAKE PRESSURE.
5. BRAKE NUTCRKR ORIDE Switch .......................................................................RELEASE
6. If both left and right brake pressure is not available, use EMERGENCY BRAKES procedure
Section 4.
7. If braking is available on one strut, stopping the airplane with operative nosewheel steering
on a dry runway is possible if braking is commenced from lower speeds. Expect longer
landing distances.
8. If left and right brake pressure is available, the BRAKE FAIL message is erroneous. Use
normal braking.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
3-34 FAA APPROVED
11 October 2001
3-06-20: Brake Fail Message (HMAB):
FOR AIRPLANES SN 1183, 1214 AND SUBS. WITH THE HYDROMECHANICAL
ANALOG BRAKE SYSTEM INCORPORATED
Loss of combined and auxiliary pressure while pedals are depressed and auxiliary pump is
ARMED will illuminate the BRAKE FAIL message.
　
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