Service difficulty report · Bushing · Boeing 737990ER

Difficulty date
September 2, 2017
Submitted
September 5, 2017
Operation
Air carrier
Aircraft
N442AS
Make and model
Boeing 737990ER
Aircraft serial
43293
Aircraft time
14,967 hours, 4,924 cycles
Part
Bushing
Part number
332A232254
Condition
Worn
Location
Bleed Air Sys
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

NR 1 ENG FWD LINK ASSY WORN BELOW PRSOV AT INTERSECTION MANIFOLD DUCT. GROUNDED - YES. FOUND INTERSECTION DUCT FLANGE BUSHING WORN. REMOVED NR 1 ENG PRSOV, PNEUMATIC CHECK VALVE & INTERSECTION PNEUMATIC MANIFOLD DUCT. INSTALLED NEW SERVICEABLE INTERSECTION PNEUMATIC MANIFOLD DUCT, REINSTALLED PRSOV & PNEUMATIC CHECK VALVE OPS & LEAK CHECKS ALL GOOD. REMOVED SENSE LINE SUPPORT BRACKET THAT WAS CRACKED & INSTALLED NEW SUPPORT BRACKET REF AMM 36-11-01-400-802, 36-11-04-400-801, 36-11-02-400-801, 70-20-02-400-801-F00. FWD LINK ASSY NOW SECURE.