Service difficulty report · Pressure Switch · Boeing 7572B7

Difficulty date
June 14, 2016
Submitted
June 16, 2016
Operation
Air carrier
Aircraft
N940UW
Make and model
Boeing 7572B7
Aircraft serial
27805
Aircraft time
70,016 hours, 25,950 cycles
Engine
Rroyce RB211535E4
Engine time
56,561 hours, 19,747 cycles
Part
Pressure Switch
Part number
21SN04159C
Part serial
M229B
Condition
Defective
Location
Zone 400
Part time
82,114 hours, 26,868 cycles
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

RETURNED TO DEPARTURE; AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED AN RT ENGINE LOW PRESSURE PUMP STATUS MESSAGE OCCURED AT FL 24000, 1 CHANNEL AND RETURNED TO DEPARTURE. MAINTENANCE REPLACED THE NR 2 ENGINE LOW PRESSURE FUEL PUMP AND THE FUEL PRESSURE SWITCH IAW AMM 73-11-01-004-003-ROO AND AMM 73-35-01-404-017-ROO. A SATISFACTORY LEAK AND OPS CHECK WAS ACCOMPLISHED IAW AMM 71-00-00-700-804 R3.

More about the Boeing 757-2B7