Service difficulty report · Flex Hose · Emb ERJ170200SU

Difficulty date
June 29, 2019
Submitted
August 17, 2020
Operation
General aviation
Make and model
Emb ERJ170200SU
Aircraft time
29,912 hours
Engine
Ge CF348E5
Part
Flex Hose
Part number
2000A1092K01
Condition
Worn
Location
Hyd System
Stage of operation
TX
How discovered
9
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

(CAN) UPON ARRIVAL THE AIRCRAFT HAD `HYD 2 LO PRESS` CAUTION MSG DISPLAY ON THEIR EICAS. UPON INITIAL INSPECTION A LARGE PUDDLE OF HYDRAULIC FLUID WAS FOUND AROUND THE RH MLG STRUT AND WHEEL WELL AREA. MAINTENANCE RAN #2 HYDRAULIC SYSTEM MOMENTARILY AND IT BECAME IMMEDIATELY APPARENT THAT THERE WAS A LEAK IN ONE OF THE HYDRAULIC LINES IN THE UPPER RH MLG AREA. FURTHER INSPECTIONS CARRIED OUT AND THE SOURCE OF THE LEAK WAS DETERMINED TO BE THE RH MLG DOWNLOCK RELEASE ACTUATOR FWD HYDRAULIC FLEX LINE/HOSE. THERE DIDN`T APPEAR TO BE ANY EVIDENCE OF CHAFFING OR SIGNIFICANT WEAR, JUST A SMALL PIN SIZED HOLE NEAR THE UPPER PORTION OF THE LINE WHERE IT WOULD CONNECT TO THE UNION COUPLING INSIDE THE MLG BAY. THE LINE`S METAL BRAIDING WAS VISIBLE THROUGH THE FABRIC COVERING WERE THE HOSE HAD FAILED/BEEN DAMAGED. AREA WAS CLEANED AND THE HOSE WAS REPLACED. (TC# 20190702020)