General Information on
Cessna 210 Standby Alternators
Cessna standby Alternator
B&C Specialty Products is pleased to announce that we have received FAA STC/PMA approval for installation of the BC425 standby alternator and BC203-2D regulator on Cessna 210L, 210M, 210N, T210L, T210M, T210N, and P210 models as the standby electrical system.

Prices for the components are as follows:
BC425 and BC203-2D w/ STC    $2200
Installation Kit $435
The standby system provides 20 amps of power to support continued flight in the event of primary alternator failure. It operates automatically, annunciating its operation to the pilot through a panel mounted annunciator which doubles as a standby alternator load monitor.

If the primary alternator fails in flight, the standby regulator will sense the drop in system voltage and automatically activate the standby alternator. If the current requirement is over 20 amps when the standby alternator is activated, the annunciator will flash. Reducing the current usage to 20 amps or less will cause the annunciator to cease flashing and light steadily. The pilot may choose which equipment he needs for the given flight conditions by simply keeping the total load below the flashing point of the annunciator. This will reserve battery energy for transient loads, (gear, flaps, landing lights, etc) during approach. Loads may be beyond the flashing point of the annunciator for up to 5 minutes without damaging the standby alternator.

The standby alternator is mounted on the right hand accessory drive pad on the Continental engine to allow throttle linkage clearance. This means the vacuum pump usually mounted in this location must be moved to the left hand accessory drive pad. Panel mounted equipment includes a STBY ALT ON annunciator, a STBY ALT toggle type breaker and two standard pull type circuit breakers (1 amp and 40 amp). Appropriate placards are provided for each panel mounted device. The regulator is mounted behind the interior panel to the left of the pilot's left leg.
Bullet 1 28 Volt Regulator - BC203-2D 
Bullet 2 Wiring Diagram 
Bullet 3 Test Procedures 
Bullet 4 Sales Information 
Bullet 5 Install Instructions 

For drawings on the 28 Volt Regulator, wiring diagram, or test procedures, click on the appropriate link above. #000000


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B & C Specialty Products Inc
123 East 4th
PO Box B
Newton, KS 67114 US
316-283-8000
Fax: 316-283-7400

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