Service difficulty report · Pressure Switch · Boeing 757224

Difficulty date
August 16, 2024
Submitted
August 16, 2024
Operation
Air carrier
Aircraft
N14107
Make and model
Boeing 757224
Aircraft serial
27297
Aircraft time
111,423 hours, 26,178 cycles
Part
Pressure Switch
Part number
7G7542
Condition
Faulty
Location
Rh Hyd System
Stage of operation
CL
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

CHECK LIGHTBULB IN OVHD BY ENTRY OF FLIGHT DECK LIGHT INOP AT THRESHOLD LIGHT OUTSIDE FLIGHT DECK. PHOTOS ADDED FOR LOC REF. REQUEST MEL 3321B FOR THRESHOLD LT OUTSIDE FWD LAV APPROVED MEL 3321B COMPLIED WITH RELAMPED (FWD LAV OUTSIDE CEILING BULB), OPS CHECK GOOD. REMOVED DEFERRAL. REFER LP 8933705 RIGHT HYD SYS PRESSURE LIGHT AND EICAS DURING CLIMB OUT AT FL180, RIGHT HYDRAULIC PRESSURE LIGHT INDICATOR ILLUMINATED AND EICAS MESSAGE. NO FLIGHT CONTROLS WERE BEING ACTUATED. RIGHT SYSTEM HYDRAULIC PRESSURE WAS RECORDED AT 2980. FLIGHT CREW RESPONDED BY SHUTTING OFF THE ENGINE AND ELECTRIC HYDRAULIC PUMPS. ALL HYDRAULIC QUANTITIES NORMAL. AUTO EVENT ATTACHED, SHOWS RSVR PRESS HIGH ON ALL 3 SYSTEMS. RSVR PRESSURE NORMAL. TROUBLE SHOT REF FIM 29-11 FAULT TREE 831 R &R HYD PRESSURE SWITCH RIGHT SYSTEM REF AMM 29-35-01. OP CHECKS GOOD. PRESSURE READS NORMAL.