C4301

Question 1

Landing Gear Malfunction

Answer 1

NOTE:

• Execute this checklist landing gear does not indicate fully up with gear handle up, or fully down with the gear handle down
• Visual inspection by another aircraft is the preferred method of determining abnormal landing gear and inboard gear door positions
• IF available have another aircraft or RDO/tower flyby report gear position visually
• If any safe gear-down indications are obtained at any point discontinue checklist and land as soon as practical

1. Airspeed - Remain below 150 KIAS
2. Gear handle - DOWN
3. LAMP test switch - Check

NOTE: Confirm all landing gear position lights illuminate. All lights in respective cockpit will illuminate regardless of gear position unless position light is burned out

The lamp test will not illuminate the gear position lights or the gear handle lights when the LDGGR CONT cb is tripped.

1. Hydraulic Pressure - Check, if <1800 PSI, execute Landing Gear Emergecny Extension checklist
2. LDGGR CONT, INST, INST LT CB - Check in/reset

Question 2

Safe Gear-Down Indications

Answer 2

• Gear indications in both cockpits combine to show three green position lights regardless of gear warning tone or any combination of red position lights
• Either AOA indexer is illuminated
• Landing and/or taxi lights are switched on and illuminated
• If the main gear indicate down and locked and the inboard gear doors are fully closed (no red lights), the nose gear can be assumed to be down and locked

Question 3

What should you do if only the nose gear is showing unsafe indications?

Answer 3

Nose gear down lock microswitch may be faulty. Pulling and resetting LDGGR CONT cb on batt bus may allow the hydraulic selector valve to center causing the nose gear down lock microswitch to finish the sequence and provide a safe cockpit gear indication