T-44 Annunciator Light Analysis

Annunciator Light Analysis

LH & RH GEN OUT (Red) – affected generator offline.
Note: Normal voltage in the ‘reset’ position indicates failure of the generator control box rather than the generator.
 * [1] Turn affected gen switch ‘off’,
 * [2] Reset and turn on
 * [3] If gen won’t reset, turn gen ‘off.’
 * [4] Monitor the load (don’t let exceed 1.0).
 * [5] Land as soon as practicable

LH & RH FUEL PRESSURE (Red) – affected side has a failed boost pump.
Note: boost pump failure (w/ crossfeed in ‘auto’) will be noted by illum of yellow xfeed annunc lt. Note: Fuel pressure light illum is failed boost pump.
 * [1] ID failed boost pump by crossfeed ‘closed’
 * [2] Switch failed boost pump ‘off’
 * [3] Place crossfeed switch ‘open,’
 * [4] Determine if the flight can be continued by referencing Section V of Fuel System Failure.

==LH & RH NO FUEL TRANSFER (Red) – affected side has a failed fuel transfer pump or all usable fuel has been transferred from the wing tanks. Check fuel quantity (check total and nacelle readings – if the same, no fuel in the wing).== If fuel remains in the wing tank: Note: transfer pump continuously energized, float switches bypassed, and 3psi pressure switch reset. Note: Loss of transfer pump – fuel will gravity feed when nacelle tanks 3/8 full and 28 gallons of fuel will be trapped in the center section wing tank.
 * [1] Fuel transfer ‘override’
 * [2] If light remains on, place transfer pump switch ‘off.’
 * [3] Consider altering flight plan due to unavailable fuel trapped in wing.
 * [4] Monitor nacelle fuel quantity
 * [5] Land as soon as practicable.

#1 & #2 INVERTER OUT (Red) – affected inverter inop.

 * [1] Affected inverter ‘off’
 * [2] Check AC bus switchover
 * [3] Consider landing as soon as practicable.

AUTO PILOT TRIM FAIL (Red) – trim servo will not operate or operates in opposite direction commanded.
[1] Depress AP/YD disengage switch [2] Retrim [3] Reengage autopilot.

PROP SYNC ON (Yellow) – landing gear has been extended with prop sync still on.
[1] Turn prop sync ‘off’ before landing.

FUEL CROSSFEED (Yellow) – electronically operated crossfeed valve open.
Note: Determine if boost pump failed by closing crossfeed valve.

If a boost pump failed:
 * [1] Failed boost pump – off
 * [2] crossfeed – open
 * [3] land as soon as practicable.

If boost pump has not failed, reset crossfeed valve to ‘auto.’

LH & RH FIRE (Red) – engine compartment fire on affected engine.
Note: Confirm fire actually exists by checking engine instruments and nacelle. Even if no secondary indications observed, shutdown the engine.

If fire confirmed, perform EMERGENCY SHUTDOWN CHECKLIST:
 * [1] Power lever – Idle
 * [2] Propeller – Feather
 * [3] Condition lever – Fuel cutoff
 * [4] Firewall valve – closed
 * [5] Fire extinguisher – as required
 * [6] Bleed air – closed
 * [7] Dead engine checklist – as required.

== LH & RH CHIP DETECT (Red) – contamination of affected side’s engine oil. Metal particles may be present in the prop reduction gearbox.== Perform the EMERGENCY SHUTDOWN CHECKLIST:
 * [1] Power lever – Idle
 * [2] Propeller – Feather
 * [3] Condition lever – Fuel cutoff.
 * [4] Proceed to the DEAD ENGINE CHECKLIST.

ALT WARN (Yellow) – cabin altitude exceeds 9,500 to 10,000 feet.

 * [1] Descend to lower altitude.
 * [2] Restore cabin pressurization.
 * [3] Check pressurization control and/or don oxygen masks.

PROP REV NOT READY (Yellow) – Props not in high RPM with landing gear handle down.

 * [1] Place prop levers full forward.