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ANTI-SKID OFF BRAKING procedure, this section.
14. If abnormal or no brake pressure indications occur:
BCS CHL #1 Circuit Breaker (CPO, A-2) ............................ RESET
15. ANTI-SKID Switch ......................................................................ON
16. BCS CHL #2 Circuit Breaker (CPO, B-2) ................................PULL
NOTE: Pulling this circuit breaker causes three (3) amber brake
messages and one (1) blue brake message to illuminate on EICAS.
17. Brake Pedals (Pilot or Copilot) ....................................... DEPRESS
INDIVIDUALLY AND VERIFY APPLIED BRAKE PRESSURE IS
APPROPRIATE FOR PEDAL DEFLECTION
18. If brake pressure indications are normal, use CAUTION in normal
braking.
19. If abnormal brake pressure indications occur, see Landing With
Applied Brake Pressure Indicated (Brake-By-Wire), page EB-5.
20. If NO brake pressure indications occur, see Emergency Brakes
(Brake-By-Wire), page EB-3.
END
BTMS OVHT Light On or BRAKE OVHT Message
(Brake-By-Wire) AFM 3-06-60
ON THE GROUND:
If the OVHT light on the BTMS display and the amber BRAKE
OVHT CAS message illuminates during ground operations:
1. Determine which brake is causing the OVHT light by slowly rotating
the BTMS selector switch through each position and checking for
brake temperatures exceeding:
NOTE: For SPZ 8400 equipped airplanes, BTMS display is available only
on BRAKES system page. All four (4) brake temperatures are displayed
simultaneously on the BRAKES system page.
A. 400° ±10° C (Non-ASC 190/Non-ASC 266 airplanes SN 1000
thru 1213 with ASC 167).
B. 625° ±25° C (ASC 190/ASC 266 airplanes SN 1000 thru 1213
with ASC 346 and SN 1214 and subs.).
Continued on next page →
Quick Reference Handbook
ABNORMAL / EMERGENCY PROCEDURES REVISION 7
Page EB - 10 (BRAKE BY WIRE) May 30/02
BTMS OVHT Light On or BRAKE OVHT Message (Brake-By-Wire),
ctd… AFM 3-06-60
2. Avoid using the brake(s) that exceed the OVHT limit. Use reverse
thrust as necessary to assist in stopping the airplane if required.
NOTE: For airplanes 1000 thru 1143 without ASC 166: Use of thrust
reversers is limited to one (1) minute every thirty (30) minutes.
3. If possible, expeditiously move the airplane to an uncongested area
clear of other airplane and active taxiways/runways.
4. DO NOT SET THE PARKING BRAKE. Chock the nose gear tire if
possible.
5. Monitor temperature of all brakes for trend information:
A. If temperatures continue to rise or remain above the OVHT
limit for more than five (5) minutes, expect wheel fuse plugs to
release. EVACUATE all personnel and remain clear of the
main landing gear area for a minimum of thirty (30) minutes.
CAUTION: DO NOT ATTEMPT TO TAKEOFF WITH THE
BRAKE OVHT LIGHT ON. THERE MAY NOT BE SUFFICIENT
BRAKE KINETIC ENERGY AVAILABLE IN THE EVENT OF A
REJECTED TAKEOFF OR TIRE FAILURE MAY OCCUR DURING
TAKEOFF ROLL.
NOTE: A visual inspection of the overheated wheels, tires, and
brakes should be accomplished prior to the next flight.
B. If the temperatures have peaked and the OVHT light
extinguishes, the tires should be inspected for proper inflation
and the brakes inspected for obvious damage before
continuing the departure.
NOTE: The flight crew should consider brake energy requirements
for subsequent departures with elevated brake temperatures. Refer
to GIV FM Appendix C for Brake Kinetic Energy and Carbon Brake
Cooling chart data. (Chart shown on QRH page PC-14.)
IN FLIGHT:
1. Altitude ...... 20,000 FT OR BELOW (DESCEND IF NECESSARY)
2. Airspeed................................................................. 225 KCAS MAX
3. Landing Gear ....................................................................EXTEND
4. Airspeed................................................................. 250 KCAS MAX
5. BTMS..............................................................................MONITOR
NOTE: Landing gear should remain extended for minimum of ten (10)
minutes after the BTMS OVHT light is extinguished. Brake
temperature(s) should be monitored to ensure decreasing trend.
Continued on next page →
Quick Reference Handbook
REVISION 7 ABNORMAL / EMERGENCY PROCEDURES
May 30/02 (BRAKE BY WIRE) Page EB - 11
BTMS OVHT Light On or BRAKE OVHT Message (Brake-By-Wire),
ctd… AFM 3-06-60
6. Airspeed .................................................................225 KCAS MAX
7. Landing Gear.................................................................. RETRACT
8. BTMS / OVHT Light............................................. CHECKED / OUT
　
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