Service difficulty report · Warning Message · Lear 60LEAR

Difficulty date
October 29, 2019
Submitted
October 31, 2019
Operation
Air carrier
Aircraft
N360SN
Make and model
Lear 60LEAR
Aircraft serial
360
Aircraft time
4,331 hours, 2,994 cycles
Engine
Pwa PW305A
Engine time
4,159 hours, 2,823 cycles
Part
Warning Message
Condition
False Activation
Location
Engines
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

ON OCTOBER 29TH, AIRCRAFT DEPARTED KHOU FOR KBHM AND CLIMBED THROUGH IMC HEAVY RAIN CONDITIONS. AS THE AIRCRAFT ARRIVED TO APPROXIMATELY FL380, THE CREW EXPERIENCED A NUMBER OF BUMPS AND BOTH ENGINE COMPUTER LIGHTS ILLUMINATED. FLIGHT CREW CONTINUED TO MONITOR ENGINE INDICATIONS, AND OBSERVED NORMAL READINGS. CREW CONTACTED ATC AND CHOSE TO DIVERT TO KBPT TO AVOID THE RAIN. UPON EXAMINATION, ENGINE COMPUTERS CAPTURED ADC-P1 WHICH WE SUSPECT WAS CAUSED BY THE HEAVY RAIN AND FREEZING AIR AT FL380. TECHNICIANS CHECKED BOTH CHIP COLLECTORS AND OIL FILTERS WHICH CHECKED GOOD. BOTH ENGINES WERE ALSO BORESCOPED, NO DAMAGE FOUND. GROUND RUNS CHECKED GOOD, SO AIRCRAFT WAS CLEARED FOR FLIGHT. AIRCRAFT RETURNED TO KHOU ON 10/31 AFTER FLYING TO ALTITUDE TO VERIFY PROPER OPERATION. NO FURTHER FAULTS FOUND.