Service difficulty report · Pressure Switch · Boeing 737823

Difficulty date
August 10, 2019
Submitted
August 27, 2019
Operation
Air carrier
Aircraft
N982AN
Make and model
Boeing 737823
Aircraft serial
31067
Aircraft time
32,179 hours, 12,722 cycles
Part
Pressure Switch
Part number
21C1322
Part serial
X8124
Condition
Unreliable
Location
Fuel Pump
Stage of operation
CR
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

AIRCRAFT WAS GROUNDED: PILOT REPORTS RH CTR TANK PUMP FUEL LOW PRESSURE LIGHT ILLUMINATED WITH SWITCH IN ON POSITION AND 2,900 LBS OF FUEL IN CTR TANK. MAINTENANCE INSTALLED SERVICEABLE RH BOOST PUMP HOUSING WITH INLET AND DISCHARGE CHECK VALVE ASSEMBLIES IAW AMM 28-22-41-400, CONNECTED FUEL LINES AND COUPLINGS. INSTALLED SERVICEABLE FUEL BOOST PUMP IAW AMM 28-42-21. PRESSURE SWITCH REMOVED AND REPLACED IAW AMM 28-42-11-700-801. ACCOMPLISHED ALL REQUIRED LEAK AND OPERATIONAL CHECKS IAW AMM 28-00-00 AND AMM 28-42-11. ACCOMPLISHED GFI OPS CHECK ON RH BOOST PUMP IAW AMM 28-22-41 AND OPS CHECKED FUEL BOOST PUMP PRESSURE SWITCH IAW AMM 28-42-11. (SEE SDR # AALA201908119010)