Service difficulty report · O-Ring · Piper PA31

Difficulty date
May 15, 2004
Submitted
November 2, 2004
Operation
General aviation
Make and model
Piper PA31
Aircraft time
12,118 hours
Engine
Lyc TIO540A2C
Propeller
Hartzl HCE3YR2
System (JASC)
3242 · Brake
Part
O-Ring
Part number
MS28775132
Condition
Cut
Location
Brake System
Stage of operation
LD
How discovered
O
Nature of condition
K
Precautionary procedure
O

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

What was found

UPON LANDING, THE LEFT BRAKE DID NOT WORK. TWO O-RINGS IN THE BRAKE ASSEMBLY WERE DISCOVERED TWISTED AND CUT WHICH CAUSED A LARGE BRAKE FLUID LEAK. THE O-RINGS WERE REPLACED, THE SYSTEM WAS BLED AND TESTED.

More about the Piper PA-31