Service difficulty report · Precooler · Cessna 525A

Difficulty date
September 18, 2018
Submitted
October 5, 2018
Operation
Air carrier
Aircraft
N714JS
Make and model
Cessna 525A
Aircraft serial
525A0213
Aircraft time
6,576 hours, 4,739 cycles
Engine
Wilint FJ44
Part
Precooler
Part number
81612
Part serial
S4883T0943
Condition
Ruptured
Location
Rt Engine
Part time
2,752 hours, 2,020 cycles
Stage of operation
CL
How discovered
O
Nature of condition
M, J
Precautionary procedure
A

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

What was found

CREW REPORTED RH ENGINE HIGH ITT AT TAKE OFF POWER ALONG WITH AN ITT SPLIT OF OVER 50 DEGREES BETWEEN LEFT AND RIGHT. UPON LANDING AFTER FURTHER INVESTIGATION BY MAINTENANCE, IT WAS DISCOVERED THAT THE RH BLEED AIR PRE-COOLER HAD RUPTURED CAUSING SOME SCORCHING TO THE UPPER AND LOWER PYLON SKINS.

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