Page 18
Section - 2
LIMITATIONS
FAA Approved
Original Issue: Feb 28, 2006
Hawker 850XP Pro Line 21 Airplane Flight Manual
Fuel Loading
Fuel tanks may be replenished in any sequence provided that the appropriate refueling
instructions are observed and that the following preflight fuel loading conditions are achieved:
1. Fuel contained in the wing tanks shall be equally disposed between the two wing tanks.
2. Fuel must not be carried in the ventral tank unless each main wing tank contains at least
3450 lb (1565 kg) of fuel.
3. Before flights on which it is to be utilized, the ventral tank must be filled completely.
For other flights it must be empty.
Pressure Refueling
Takeoff must not be initiated if the amber FUEL annunciator on the MWS panel and the amber
REFUEL ON annunciator on the roof panel are illuminated.
Flight with the Refuel Power Switch ON is prohibited.
Fuel System Management
1. During flight, including takeoff and landing, the difference in fuel quantity between the two
wing tanks must not exceed 500 lb (227 kg).
2. Fuel carried in the ventral fuel tank shall be transferred into the wing tanks when the fuel level
in the wing tanks has fallen to 3300 lb (1497 kg) per side.
3. Overweight landing procedure and inspection is required for any landing with fuel in the
ventral tank.
ELECTRICAL LIMITATIONS
Battery Limitations
Maximum battery charge on the main airplane batteries (B1 and B2) immediately before
takeoff shall not be greater than 20 AMPS.
Generator Limitations
Maximum continuous engine generator load: 300 AMPS
NOTE: Transient excursions, up to a maximum of 400 AMPS, are permitted for a maximum
of 2 minutes.
Main Engine Starter Duty Cycle
On the ground, the maximum permitted starter operating time is 30 seconds. After an aborted
start, a minimum of 1 minute cooling time must be allowed before making another attempt to
start. A further 1 minute is required before making a third attempt. The cycle may be repeated
after a further period of 30 minutes.
Operation of Electrical Circuit Breakers
If, during flight, a systems failure is accompanied by a circuit breaker operation, no attempt
must be made to reset the circuit breaker unless specified in the appropriate Emergency or
Abnormal procedure or, if deemed necessary for the continuation of safe flight, a circuit breaker
may be reset once.
For Training Purposes Only