Service difficulty report · Precooler · Cessna 525A

Difficulty date
January 24, 2023
Submitted
January 27, 2023
Operation
Air carrier
Aircraft
N420EH
Make and model
Cessna 525A
Aircraft serial
525A0027
Aircraft time
5,330 hours, 3,940 cycles
Part
Precooler
Part number
99144024
Part serial
S4883T0736
Condition
Defective
Location
Rt Bleed Sys
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

THE FLIGHT CREW REPORTED A RIGHT BLEED AIR OVERHEAT WARNING INDICATION DURING FLIGHT. THEY STATED THAT THE WARNING IS ILLUMINATED ABOVE 100% ENGINE POWER AND EXTINGUISHES AT BELOW 98% POWER. THE MAINTENANCE CREW DETERMINED THE RIGHT BLEED AIR PRECOOLER WAS DEFECTIVE REQUIRING IT TO BE REPLACED. AN OVERHAULED PRE-COOLER WAS INSTALLED OPS AND LEAK CHECKS WERE PERFORMED AND FOUND TO BE SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.

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