BE30 - Annunciators Flashcards

Question

[AUTOFEATHER OFF]

Answer 1

**Autofeather system is not armed before takeoff or landing** AFX switch is not armed, combined with landing gear down&locked

Answer 2

**Rudder Boost is OFF** - Rudder Boost system failure - RUD BOOST control switch is not ON" ## Footnote RB will not compensate yaw in case of excessive torque differential

Answer 3

**Electrical Pitch Trim unavailable** Electric Elevator Trim was de-energized by the Trim Disconnect switch (yoke), while the ELEV TRIM switch on the pedastal is ON

Answer 4

**Propellers are not in the appropriate position (FULL FWD) for takeoff / landing** Propellers not in the high RPM (low pitch), combined wt. landing gear extended ## Footnote Using full reverse may activate one or both of the fuel topping governors, causing loss of reverse thrust and/or delayed engine acceleration

Answer 5

[STEADY] GPU connected & supplying sufficient current - External power voltage is high enough to prevent battery discharge [FLASHING] GPU connected & not supplying sufficient current, either due to : - EXT PWR switch is OFF - Sensor on external power relay sensed below 24 VDC (or) over 31 VDC

Answer 6

**≥28 VDC is being delivered to one or both ground idle pitch stop solenoids for >10 sec** Malfunction of the propeller ground idle low pitch stop solenoid mechanism (responsible for resetting the low pitch stop from 2° on the ground, to 12° once in flight) (Flight) Electrical power is normally removed from the ground idle low pitch solenoid when the R squat switch is activated at lift-off (Ground) Annunciator inhibited by the L squat switch ## Footnote When the affected propeller is no longer controlled by the governor, its blade angle will be allowed to decrease from the flight to the ground idle low pitch stop (discing) * Expect increased drag and potential yawing when reducing speed & power on approach/landing

Answer 7

**Pod door is not closed (open/unsecured)**

Answer 8

**Pitot heat inoperative** - Pitot mast heating failure - Pitot Heat switch OFF ## Footnote Not advisable to operate pitot heat system on the ground except for testing or for short intervals to remove ice

Answer 9

**Ignition system is energized** - Ignition & Engine start switch is ON - Auto-ignition system is armed & engine TRQ falls below 17% ## Footnote Oil pressure switch, mounted on the TRQ transducer manifols, senses manifold oil pressure drops below 4.7 psi. The igniter will continue to function until engine TRQ manifold oil pressure increases above 6.1 psi

Answer 10

**Anti-ice vane extended** ## Footnote Should also result in TRQ decrease & ITT increase

Answer 11

**Brake deice system in operation** Shutoff valve in wheel well is OPEN (allowing hot bleed air to enter brake deice line) - - - - - - - - - - - - - [ILLUMINATED, more than 10 minutes after Gear Up] * Timer malfunction = Must manually switch Brake Deice OFF

Answer 12

**Manually closed generator bus ties** GEN TIES switch is in MAN CLOSE position & Gen Bus tie relays are closed Generator bus loads are applied to the battery ## Footnote A generator bus tie relay cannot be manually closed if a fault opened the tie; the BUS SENSE switch must be momentarily set to RESET, which may reset the tie.

Answer 13

**Crossfeed valve is open** ## Footnote * Automatic transfer module simultaneously energizes the standby pump on the ''giving'' side & de-energizes the motive flow valve in the tank of the ''receiving'' side * If standby boost-pump on both sides operating wt. crossfeed valve open, fuel will be supplied in the normal manner due to equal pressure on each side of the valve

Answer 14

**Wing surface deice system in operation (inflates)** Pressure switch senses 14-15 PSI in both wing boot - - - - - - - - - - - - - [ILLUMINATED, wt. switch OFF] * The cycle has not been completed, vacuum failed to completly deflate boots. * If boots keep inflated, ice could build-up and prevent subsequent shedding" ## Footnote Annunciator illuminates after a 6-10 seconds delay

Answer 15

**Electric heat switch is ON & system is operational** Power relays are in the closed position to apply electrical power to the heating elements [EXTINGUISHED, wt. switch ON] * Thermistor in duct sensed an overheat condition (ex. blower failure) & power was removed from the heat elements [ILLUMINATED, wt. switch OFF] * Maintenenance is required. Maintain the ELEC HEAT and Blowers ON until airplane shutdown ## Footnote - Both the FWD and AFT blowers must be operating during electric heat use. - The ELEC HEAT ON annunciator must be extinguisher prior to switching OFF the blowers

Answer 16

**Propeller below flight idle stop** Propeller blade angle has decreased by more than 8° below the flight idle low pitch stop without direct pilot action (the difference between the flight idle and ground idle blade angles is approximately 10°) Magnetic-proximity sensor senses the position of the feedback ring, and thereby sensing the position of the propeller dome and blade angle. * Illumination on the ground is normal and expected. * Illumination in flight is abnormal ## Footnote Electrical power is normally removed from the solenoid by a microswitch on its respective power lever as it advance through 68-70%N1

Answer 17

**Passenger oxygen system charged ** Oxygen pressure sensed in passenger oxygen supply lines. Pax oxygen system shutoff valve has been opened, either : - Manually = by pulling the handle - Automatically = Barometric-pressure switch activates when the cabin pressure altitude exceeds 12,500' (therefore, if the cabin later descends below 12,500', or if electrical power is removed from the circuit, the shutoff valve will close; thereby terminating oxygen flow to the passenger masks) ## Footnote Additional effects : - Masks will drop down imminently - Cabin indirect lights illuminate - Seatbelt sign & chime

Answer 18

**Cabin altitude exceeds 10,000'** Pressure sensing switch has sensed that cabin pressure altitude reached between 10,000'-10,500'

Answer 19

**Light is ON wt. landing gear retracted** ## Footnote Activated through nose gear uplock switch

Answer 20

**(R) Engine N1 too low to power the A/C freon compressor ** Since the engine N1 speed was below 62%, the A/C compressor cutout switch has disconnected the electric clutch for the A/C compressor This protection prevents engine lugging (engine strained and forced to run at low RPM's, which can cause it to overheat) A/C auto-protection system also prevent compressor operation - wt/out annunciator - if : - Refrigerant pressure too high / too low - Ambient temperature is below 10°C ## Footnote - Minimum engine idle speed & A/C cutout switch coincide. - Constant cycling of the clutch will cause pressure surge in A/C plumbing, which may in turn cause the resettable switch in nose wheel well to trip (amber light)

Answer 21

**AFX system is fully armed** AFX switch is in ARM position & both power levers advanced to the equivalent of N1 > 88%. ## Footnote * If either TRQ falls <17%, system becomes inoperative on opposite side. * If TRQ falls <10%, prop feathers on failed side.

Answer 22

[WHITE] **STATUS** * Normal condition - Initiated automatically (or) by the flight crew [GREEN] **ADVISORY** * An operation initiated by the flight crew is occuring properly