Service difficulty report · O-Ring · Boeing 7378H4

Difficulty date
April 15, 2025
Submitted
April 17, 2025
Operation
Air carrier
Aircraft
N8682B
Make and model
Boeing 7378H4
Aircraft serial
36651
Aircraft time
30,286 hours, 14,932 cycles
Part
O-Ring
Condition
Leaking
Location
Zone 100
Stage of operation
DE
How discovered
C
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

LOSS OF HYD SYSTEM B LEAK WAS FROM B SYS MODULE PRESSURE SWITCH BASE. SEE PIC IN ATTACHMENTS. REF LP 2794629 <[01] CW; [02] R/R B SYSTEM MODULE PRESSURE SWITCH ADAPTER O RINGS IAW AMM 29-11-00 OPS AND LEAK CHECK GOOD.

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