Service difficulty report · Line · Cessna 172R

Difficulty date
October 22, 1999
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N9522Q
Make and model
Cessna 172R
Aircraft serial
17280426
Part
Line
Part number
0500118126
Condition
Leaking
Location
Brake
Stage of operation
IN
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

HYDRAULIC FLUID WAS NOTED COMING FROM BOTH MAIN GEAR STRUT BRAKE LINES. PIN HOLES WERE FOUND IN BOTH LINES AT THE LOWEST POINT, JUST INBOARD OF THE BRAKE CALIBER. THERE IS A PLASTIC SLEEVE ON THE LINE THAT IS INSTALLED AT THE FACTORY. IT APPEARS THAT BOTH LINES WERE CORRODED, AND THAT WAS THE REASON FOR THE PIN HOLES. IT IS SUGGESTED THAT SMALL HOLES BE CUT INTO THE PLASTIC SLEEVING AT THE LOWEST POINT OF THE BRAKE LINE INSTALLATION TO DRAIN ANY WATER THAT MIGHT COLLECT.

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