1900 Tech Exam Flashcards
Maximum ITT for takeoff is
800 degrees for 5 minutes.
Minimum battery voltage for an external power start is
20 VDC.
In cruise flight at 3200 ft/lbs and 1550 RPM a propeller lever cable break will result in
the propeller governing at 1700 RPM.
During an engine start if no ITT is observed
a clearing start is required.
With respect to certification, the maximum landing weight may be limited by
brake energy.
Moving the pressurization switch to the dump position does what?
It energizes the dump solenoid and de-energizes the ram air vent lock, to allow vacuum air to open the valve.
Engine anti ice is required
before entering visible moisture with an OAT of +5 degrees Celsius or less.
Asymmetric flap protection is provided by
a switch between adjacent flap segments.
Maximum pressure differential is
5.1 psi.
The landing gear safety switch
interrupts power to the landing gear motor on the ground.
The vacuum/pneumatic system is driven by
P3 air from the compressor regulated to 18 psi.
When the engine auto ignition is armed the
igniters operate when torque falls below 750 ft/lbs.
After starting the engine, the condition lever should be moved to high,
after the engine has stabilized and N1 is 65%.
With the gen ties switch in NORM,
both ties close when the line contactor closes.
The ram vent air is
available only when the dump solenoid is engaged.
The minimum N1 allowed for putting a generator online is
72%.
Annunciators associated with a loss of power to the left generator bus are,
L DC GEN, L GEN TIE OPEN and
R ENVIRO FAIL.
Va is
178 knots.
The primary governor’s operating range is
1200-1700 RPM.
The stand by boost pump is energized
when the IGNITION AND ENGINE START switches are in the ON position and/or fuel is being transferred.
If the engine driven high pressure fuel pump fails
the engine will fail.
The fuel topping governor
utilizes inputs from fly weights and pneumatic bellows to meter fuel.
With an oil pressure indication of less than 90 psi
a maximum torques of 2000 ft/lbs must be observed.
ITT limits for engine start are
1000 degrees for not more than 5 seconds.
Failure of the stand by pump results in
a loss of fuel transfer capability.
26) The R ENVIR FAIL annunciator illuminated means
the pre cooler and shut off valve regulator valves are closed and the switch is OPEN.
27) Vacuum for the wing de ice system is provided by
a bleed air ejector.
28) Maximum N1 for the PT6-67D is
104%.
29) The engine intake lip is heated
continuously by exhaust air.
With 17,000 set on the aircraft scale of the pressure controller, you begin a descent to 15,000 feet.
The cabin differential will decrease.
Fault protection for the triple fed bus is provided by
three 60 amp current limiters.
Min Flow is
50% N1.
The fuel control units receive inputs from
a pneumatic bellows, N1 governor, the power lever and the condition lever.
A completely blank or black EFIS tube is most likely
a failure of the tube.
When the IGNITION AND ENGINE START switches are in the full ON position
the starter turns the engine, the ignitors are on and the stand by pump is on.
The starter limits are
20 seconds on, 30 seconds off, 20 seconds on, 60 seconds off, 20 seconds on, 5 minutes off.
After a failure of the triple fed bus
the pilot will notice that COM 1 and the engine instruments will lose power
) A vacuum source failure will be indicated by
zero or very low suction, and a pressurization loss/cabin descent.
The 0 flap Vref at 14,000 lbs is
124 knots
The HED’s protect their respective buses by
opening its associated bus tie if excessive current is sensed.
The L DC GEN annunciator will illuminate when
the line contactor is open and the starter switch is in the STARTER ONLY position.
The balked landing climb gradient is
3.3%
A compressor bleed valve that is stuck open will result in
high ITT and low torque.
A wet runway
has no effect on V1 for the Beech 1900
The hydraulic power pack shuts off
during gear extension when the 3 actuator down lock pins are engaged or the 16 second switch is energized.
With the landing gear up
the hydraulic power pack comes on at 2320 psi and cuts out when the pressure switch detects 2775 psi or the timer switch hits 16 seconds.
For the MAN COOL mode to function,
the ACM bypass valve must be closed and the OAT must be 45 degrees Fahrenheit or greater
A XDTA annunciator on the first officer’s side means
the f/o can not receive data from the captains side. Independent mode
Placing bleed air switches in the ENVIR OFF position
de-energizes the enviro valves closed but the pneumatic valve stays open.
A squat switch
energizes the dump solenoid open and prevents aircraft pressurization on the ground.
While taxiing, the firewall fuel valve light comes on
The pilots should visually confirm the fire, and then blow the extinguisher bottle.
The hydraulic accumulator
assists in maintaining system pressure to hold the landing gear up
