Service difficulty report · Pressure Switch · Boeing 737890

Difficulty date
August 10, 2019
Submitted
August 12, 2019
Operation
Air carrier
Aircraft
N537AS
Make and model
Boeing 737890
Aircraft serial
35204
Aircraft time
29,702 hours, 8,603 cycles
Part
Pressure Switch
Part number
21C1321
Condition
Failed
Location
Fuel System
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

WHEN POSITIONING RIGHT CENTER FUEL PUMP FROM OFF TO ON THE LOW PRESSURE LIGHT DOES NOT ILLUMINATE. GROUNDED - YES. DETERMINED THE RT CENTER TANK FUEL BOOST PUMP PRESSURE SWITCH FAILED. REMOVED AND REPLACED THE RT CTR TANK SWITCH REF B737-800 AMM 28-42-11/401. PERFORMED AMM TASK 28-42-11-700-801 OPERATIONAL TEST. OPS CHECK GOOD.