Service difficulty report · Grommet · Cessna 525B

Difficulty date
August 31, 2025
Submitted
September 4, 2025
Operation
Air carrier
Aircraft
N739JS
Make and model
Cessna 525B
Aircraft serial
525B0045
Aircraft time
12,615 hours, 8,648 cycles
System (JASC)
5200 · Doors
Part
Grommet
Part number
MS3548941
Condition
Failed
Location
Zone 800
Stage of operation
CR
How discovered
V
Nature of condition
O
Precautionary procedure
A

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

What was found

SECONDARY DOOR SEAL FAILURE. PERFORMED OPERATIONAL CHECK OF PNEUMATIC CABIN ENTRY DOOR SEAL INFLATION CYCLE, OBSERVING CAUTION TO PREVENT FULL SEAL INFLATION TO AVOID GROMMET BLOW OFF) UTILIZED TROUBLESHOOTING CHART (REF: MM 36-11:00, FIG. 101) TO ISOLATE THE FAULTY IDENTIFIED ROOT CAUSE RELATED TO FAILED SECONDARY SEAL COMPONENT DOOR SEAL HINGE GROMMET. REMOVED AND REPLACED DOOR SEAL HINGE PRESSURE SUPPLY GROMMET AND OPS CHECKED DOOR SEAL WITH NO DEFECTS WORK PERFORMED IAW 52-10-00

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