Service difficulty report · Bracket · Cessna 750

Difficulty date
January 11, 2022
Submitted
January 11, 2022
Operation
General aviation
Aircraft
N750VP
Make and model
Cessna 750
Aircraft serial
7500022
Aircraft time
8,604 hours, 5,435 cycles
System (JASC)
1430 · Fasteners
Part
Bracket
Part number
67270043
Part serial
NA
Condition
Cracked
Location
Zone 100
Part time
8,604 hours, 5,435 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
O

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

What was found

A RECENT SDR REPORT FOR A BROKEN BRACKET AND SUBSEQUENT LEAK IN A HYDRAULIC LINE ON AIRCRAFT N733FL (12508 HRS), S/N 750-0027 RESULTING IN AN EMERGENCY LANDING PROMPTED A BAKER AVIATION FLEET-WIDE INSPECTION OF THE BROKEN BRACKET. WHEN N750VP (8603 HRS) ARRIVED FOR INSPECTION, WE FOUND A STANDOFF BRACKET FOR A CLAMP IN THE LEFT-WING ROOT THAT HOLDS A CLUSTER OF HYD LINES FATIGUED AND BROKE. THIS WAS THE SAME BRACKET THAT FAILED ON N733FL CAUSING AN EMERGENCY LANDING DUE TO HYDRAULIC FLUID LOSS. THIS BROKEN BRACKET MADE IT POSSIBLE FOR THE PRESS A HYD LINES TO FLEX OVER AND RUB AGAINST A FLIGHT CONTROL CABLE AND CHAFFING COULD OCCUR IN THE PRESSURE LINE. THERE WAS NO DAMAGE TO ANY HYDRAULIC LINES OR THE FLIGHT CONTROL CABLE DURING THIS INSPECTION OF N750VP. A NEW BRACKET P/N 6727004-3 WAS INSTALLED DURING THIS MAINTENANCE VISIT. NOTE: THIS BRACKET HAS BEEN INSPECTED ON AIRCRAFT S/N'S 750-0091 (19117 HRS), 750-0140 (6029 HRS), 750-0266 (5667HRS) WITH NO DEFECTS FOUND.

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