Citation 500-Series Brakes Explained

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Citation 500-Series Brakes Explained

Citation 500-Series Brakes Explained
500, 510, 525, 525A, 525B, 525C, 550, S550,
560 and 560XL ATA: 32-40

Since the initial production of the Citation 500-series family of
airplanes, the braking systems have changed from model to model.
For the benefit of Citation operators, the information provided
below describes some of the operational differences for
maintenance and flight crew “feel” of the braking systems.
 

Models 500/501 (Citation I), 525 (CitationJet, CJ1 and CJ1+), 550/551 (Citation II and Citation II Classic), S550 (Citation SII), and 560 (Citation V and Ultra)
 

  • Pilot builds pressure to the antiskid servo valve by pressing
    the brake pedals and activating the hydraulic master cylinders
  • The antiskid servo valve has two shuttle valves that allow
    hydraulic fluid to bypass through the servo valve to the
    brakes without electrical power
  • If there is no electrical power to the brake system, the
    hydraulic braking pressure can still be increased by pumping
    the pedals
    Models 550 (Bravo) and 560XL (Excel)
  • Pilot builds pressure to the antiskid servo valve by pressing
    the brake pedals and activating the hydraulic master cylinders
  • The antiskid servo valve does not have shuttle valves and, as
    a result, there are two hydraulic circuits separated by the
    antiskid servo valve
  • Because the antiskid servo valve is electrically controlled there
    is no braking ability without electrical power
     

Models 510 (Mustang), 525A (CJ2 and CJ2+), 525B (CJ3),
525C (CJ4), 560 (Encore and Encore+), and 560XL (XLS and XLS+)

 

  • The brake pedals are spring-loaded with constant “feel” of
    pressure, however movement of the pedals does not build
    any hydraulic braking system pressure
  • There are no master cylinders with the brake pedals and the
    brake metering/antiskid servo valve is connected by cables
  • There is only one hydraulic circuit
  • Because the brake metering/antiskid servo valve is electrically controlled there is no braking ability with out electrical power
     

Caution: In the rare event of brake system failure, operators
must immediately use the emergency braking system to stop
the airplane in all Citation models.

 

Questions, please contact:

Team Legacy
1-800-835-4090
[email protected]
Team CJ
1-800-835-4090
[email protected]
Team Mustang
316-517-5490 (Direct)
1-877-832-6510 (WATS)
[email protected]
Team Excel
316-517-1400 (Direct)
1-877-560-3960 (WATS)
[email protected]
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