Service difficulty report · Precooler · Cessna 525A

Difficulty date
January 24, 2014
Submitted
February 1, 2014
Operation
Air carrier
Aircraft
N188JB
Make and model
Cessna 525A
Aircraft serial
525A0216
Aircraft time
2,614 hours, 2,145 cycles
Engine
Wilint FJ44
Engine time
2,396 hours, 2,020 cycles
Part
Precooler
Part number
81612
Part serial
S4883TD439
Condition
Ruptured
Location
Zone 400
Part time
2,614 hours, 2,145 cycles
Stage of operation
CR
How discovered
O
Nature of condition
P, M
Precautionary procedure
O

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

What was found

ON ARRIVAL, SOME DISCOLORATION, MISSING PAINT WAS NOTED ON THE RT ENGINE PYLON. ON FURTHER INVESTIGATION IT WAS FOUND THAT THE PRE-COOLER HAD RUPTURED IN THE PYLON CAUSING SEVERE HEAT DAMAGE TO THE SURROUNDING STRUCTURE AND PYLON, FUSELAGE SKINS. IT WAS DETERMINED BY ENGINEERING THAT THE ENGINE SUPPORT BEAMS AND MOUNTS HAD NOT SUFFERED ANY DAMAGE AND THAT THE ACFT WOULD BE SAFE FOR A 1 TIME FERRY TO FOR REPAIRS. THE ONLY ANOMALY NOTED BY THE FLIGHT CREW WAS AN ITT SPLIT OF 50 DEGREES. THERE IS NO OVERHEAT DETECTORS IN THE PYLONS ON THE CJ2.

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