Service difficulty report · Pressure Switch · Boeing 757222

Difficulty date
May 9, 2011
Submitted
May 27, 2011
Operation
Air carrier
Aircraft
N548UA
Make and model
Boeing 757222
Aircraft serial
25396
Aircraft time
73,734 hours, 21,301 cycles
Engine
Pwa PW2037
Part
Pressure Switch
Condition
Faulty
Location
Hydraulic Sys
Stage of operation
NR
How discovered
O
Nature of condition
P
Precautionary procedure
O

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

What was found

LEFT ELECTRIC HYDRAULIC LOW PRESSURE LIGHT DOES NOT ILLUMINATE WITH SWITCH OFF. LIGHT TESTS OKAY. VERIFIED SYS LOW PRESS INDICATIONS ARE GOOD AND HYD PAGE SHOWS 3000 LBS PRESS WITH LEFT ELEC PUMP ON PER MEL. NEED LEFT SYSTEM LOW PRESS SW. (NON STOCK LAX). REPLACED PRESS SWITCH PER MM, OPS CHECK OKAY.