SDR QMLA2015040115026

Service difficulty report · Thermocouple · Bell 407

Difficulty date: April 1, 2015
Submitted: April 9, 2015
Operation: Air carrier
Aircraft: N611PA
Make and model: Bell 407
Aircraft serial: 53573
Aircraft time: 1,280 hours, 2,278 cycles
Engine: Allsn 250C47B
System (JASC): 7720 · Engine Temperature Indicating System
Part: Thermocouple
Part number: 23009851
Condition: Broken
Location: Rt Engine
Stage of operation: LD
How discovered: O
Nature of condition: M, N
Precautionary procedure: K

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

What was found

UPON APPROACH, INST CAUTION LIGHT ILLUMINATED, UPON INSPECTION OF INST'S FOUND MGT GAUGE SHOWED EXCEEDANCE. PERFORMED A THERMO COUPLING TEST BOX, ON TEST ON GAUGE. PERFORMED HOT END INSPECTION ON ENG, FOUND THERMO COUPLING BLOCK HAD LOOSE TERMINAL. REPLACED BLOCK.

More about the Bell 407