Service difficulty report · Magnetic Seal · Boeing 737990ER

Difficulty date
July 7, 2023
Submitted
July 11, 2023
Operation
Air carrier
Aircraft
N495AS
Make and model
Boeing 737990ER
Aircraft serial
41728
Aircraft time
27,399 hours, 8,546 cycles
Part
Magnetic Seal
Part number
3051023030
Condition
Leaking
Location
#1 Engine
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

REMOVED ENGINE DRIVEN HYD PUMP FOR SEAL LEAK PER TSR714593. FOUND HYD PUMP SHAFT SEAL LEAKING. GROUNDED - YES. REMOVED AND INSTALLED #1 ENG EDP MAGNETIC SEAL REF 72-60-00 AMM. REPLACED #1 ENG EDP REF AMM 29-11-11. PERFORMED EDP INSTALL TEST NO DEFECTS NOTED. NO LEAKS FOUND. THIS ACTION CLOSES TSR714593.