SDR 2026FA0000340

Service difficulty report · Bypass Valve · Agusta AW119MKII

Difficulty date: May 3, 2026
Submitted: May 8, 2026
Operation: General aviation
Aircraft: N651MC
Make and model: Agusta AW119MKII
Aircraft serial: 15021
Aircraft time: 470 hours
Engine: Pwa PT6B37A
Engine time: 470 hours, 1,954 cycles
System (JASC): 7900 · Engine Oil System (Airframe Furnished)
Part: Bypass Valve
Part number: 727029
Part serial: 1127
Condition: Failed
Location: Zone 200
Part time: 470 hours
Stage of operation: NR
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

PILOT EXPERIENCED A RISE IN TEMPERATURE DURING FLIGHT, UP TO 114 CELCIUS. PILOT REDUCE POWER AND AIRSPEED TO UNLOAD ENGINE TO AID IN COOLING. ENGINE OIL TEMP REACHED 115 CELCIUS AND PILOT INITIATED PEL. PART CONFIRMED FAILED, REPLACED WITH NEW PART, OPS CHECK SAT.

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