TH-57 Caution Light Panel

Activates when <300 psi, turns off when pressure returns to >400 psi

Excessive heat in duct. 

• Heater Malfunction (non-memory) EP:
• 1) Cabin Heat Valve - OFF
• 2) Air Cond/Fan Switch - FAN
• 3) HI/FAN/LO Switch - HI

Excessive temperature in engine compartment.  Not a confirmed fire without secondary indications!

• Engine Fire in Flight:
• 1) Confirm existence of fire
• If fire exists:
• 2) Land immediately
• 3) Emergency Shutdown - Complete after landing
• If fire unconfirmed:
• 4) Land as soon as possible

• Execute Main Gen Fail EP:
• 1) Main Gen Field and Main Gen Reset CBs - Check in
• 2) Main Gen Switch - Reset, then on
• If gen power not restored:
• 3) MAIN GEN Switch - Off
• 4) Unnecessary Electrical Equipment - Off
• 7) Descend below 6,000 ft PA
• 8) Land as soon as practical
• If gen power is restored:
• 9) Continue flight

If either of the Spare lights illuminate, it means there's a miswiring and something else should be lighted.  Land as soon as possible!

<20 gal remain in the tank

• 1 flash/sec = needle in the transient range
• 2 flash/sec = limit exceedance

Impending fuel filter bypass.  Land as soon as possible.

Boost pump pressure <3.5 psi.  Either both have failed, or something else is wrong.

• Fuel Boost Pump Failure:
• 1) Descent - initiate if above 6,000 ft PA and flight permits
• 2) Fuel Pressure and Quantity - Note
• If both pumps have failed:
• 3) Land as soon as possible
• If one has failed:
• 4) Land as soon as practical

• 1 flash/sec = transient
• 2 flash/sec = exceedance

Overtorque = Land as soon as possible

Land as soon as possible

Execute chip light procedures

Execute chip light procedures

• 60+/-3ºC
• Battery off, land as soon as possible

54+/-3ºC

Battery off, continue flight

>110ºC

Land as soon as possible

<30+/-2ºC

Land as soon as possible

Ng < 55+/-3%

• 1) Monitor other engine instruments
• 2) Avoid high power settings
• 3) Land as soon as practical

Nr <90+/-3%

Monitor other instruments, land as soon as practical