diagnose on hydraulic hose in aircraft landing gear

1. Diagnose
• the low oil pressure caution light for the
number-two hydraulic engine pump
illuminated.
• the nose and right main landing gear
doors had remained open and the left
landing gear door had closed after all the
gears had been extended.
• The oil pressure reduce to 300psi

2. Problem
• Low hydraulic pressure

3. Component failure
• sequence valve