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psi.
END
Wheel Brake Failure (HMAB) AFM 3-05-30
If the Combined System engine-driven pump fails, the Utility System
will automatically provide power to operate brakes. If the Combined
and Utility systems fail, the Auxiliary Hydraulic Pump may be utilized to
operate the brakes. Anti-skid protection is available when using Combined,
Utility, or Auxiliary System pressure.
CAUTION: TAKEOFF IS NOT PERMITTED WITH EITHER SINGLE OR
DUAL CHANNEL FAILURE OF PILOT’S OR COPILOT’S BRAKE SYSTEM.
END
Quick Reference Handbook
ABNORMAL / EMERGENCY PROCEDURES REVISION 7
Page EB - 4 (HMAB) May 30/02
Auxiliary Braking (HMAB) AFM 3-05-80
FOR AIRPLANES SN 1183, SN 1214 AND SUBS AND AIRPLANES
SN 1000 THRU 1213 WITH ASC 307
1. HYDRAULIC SYSTEM Display..........................................SELECT
Select HYDRAULIC SYSTEM display on EICAS to show applied
brake pressure.
2. Auxiliary Hydraulic Pump ........................................................... ON
3. Braking ....................................................................AS REQUIRED
END
BRAKE FAIL Message (HMAB) AFM 3-06-20
FOR AIRPLANES SN 1183, 1214 AND SUBS. WITH THE HYDROMECHANICAL
ANALOG BRAKE SYSTEM INCORPORATED
If warning occurs in flight:
1. Applied Brake Pressure Display.........................SELECT ON DU 4
2. Hydraulic Pressures ............................................................ CHECK
If combined pressure is normal:
3. Auxiliary Hydraulic Pump ..........................................................OFF
4. Anti-Skid Switch ........................................................................OFF
5. Brakes.................................................................................. APPLY
If applied brake pressure indicates normal, the message was false.
Proceed with Steps 6, 9 and 10.
6. Auxiliary Hydraulic Pump ....................................................ARMED
If combined system has failed:
7. Auxiliary Hydraulic Pump ........................................... ARMED / ON
8. Brakes.................................................................................. APPLY
If applied brake pressure indicates normal, see Auxiliary Braking
(HMAB), this page.
9. Anti-Skid Switch ......................................................................... ON
10. INBD ANTI-SKID, OTBD ANTI-SKID Circuit Breakers (CPO: A-2,
B-2) .............................................................................................. IN
Continued on next page →
Quick Reference Handbook
REVISION 7 ABNORMAL / EMERGENCY PROCEDURES
May 30/02 (HMAB) Page EB - 5
BRAKE FAIL Message (HMAB), ctd… AFM 3-06-20
If warning occurs during landing:
11. Park / Emergency Brake .........................................AS REQUIRED
See Emergency Brakes (HMAB), page EB-3.
END
BRAKE MAINT REQ’D Message (HMAB) AFM 3-06-30
For airplanes SN 1183, 1214 and subs:
A wheel speed miscompare lasting more than five (5) seconds will
illuminate the BRAKE MAINTENANCE REQ’D message.
If the message occurs in flight, investigate after landing. This message
may appear if the landing gear is left down after takeoff and there is a
difference in wheel spindown rates.
If message occurs on the ground, limited troubleshooting can be
accomplished by performing an anti-skid test at a speed of 10 knots or
less.
On ground only:
If the ANTI-SKID FAIL message illuminates during the test, a fault
exists which can be isolated by performing a system test on the Skid
Control Box (SCB).
END
BTMS OVHT Light On or BRAKE OVHT Message
(HMAB) 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.)
Continued on next page →
Quick Reference Handbook
ABNORMAL / EMERGENCY PROCEDURES REVISION 7
Page EB - 6 (HMAB) May 30/02
BTMS OVHT Light On or BRAKE OVHT Message (HMAB), ctd…
AFM 3-06-60
B. 625° ±25° C (ASC 190/ASC 266 airplanes SN 1000 thru 1213
with ASC 346 and SN 1214 and subs.).
2. Avoid using the brake(s) that exceed the OVHT limit. Use reverse
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