SDR RU3A0415

Service difficulty report · Hydraulic System · Lear 60LEAR

Difficulty date
October 8, 2004
Submitted
October 27, 2004
Operation
Air carrier
Aircraft
N54
Make and model
Lear 60LEAR
Aircraft serial
009
Part
Hydraulic System
Condition
Malfunctioned
Location
Main
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

WHILE LOWERING GEAR BOTH HYDRAULIC LOW PRESSURE LIGHTS ILLUMINATED. THE PRESSURE FLUCTUATED TO THE TOP OF THE YELLOW ARC, THEN CAME BACK TO NORMAL AND BOTH HYDRAULIC PRESS LOW LIGHTS WENT OUT. RAISED THE GEAR AND BOTH HYDRAULIC PRESSURE LIGHT CAME ON AND THE NOSE GEAR UNSAFE LIGHT STAYED ON, AGAIN THE HYDRAULIC PRESSURE FLUCTUATED BUT RETURNED TO A NORMAL READING AND THE PRESSURE LIGHTS WENT OUT. DECLARED EMERGENCY, BURNED FUEL LOAD DOWN, DISCUSSED PROBLEM WITH MAINTENANCE FACILITY. LOWERED GEAR NORMALLY AND AGAIN THE PRESSURE LIGHTS CAME ON FOR SEVERAL SECONDS AND THEN WENT OFF. LANDED SAFELY WITHOUT USE OF SPOILERS OR THRUST REVERSERS. (M)