Service difficulty report · Thermocouple · Doug DC982

Difficulty date
August 26, 2004
Submitted
August 27, 2004
Operation
Air carrier
Aircraft
N1003Y
Make and model
Doug DC982
Aircraft serial
48068
Aircraft time
66,099 hours, 51,745 cycles
Engine
Pwa JT8D217A
Engine time
56,858 hours, 31,436 cycles
Part
Thermocouple
Condition
Damaged
Location
Rt Engine
Stage of operation
IN
How discovered
C
Nature of condition
N
Precautionary procedure
K

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

What was found

DURING OVERNIGHT SERVICE WAS DETECTED RT ENGINE WITH HIGH EGT INDICATION. EGT INDICATION WAS CHECKED IAW MM 77-21-00 AND THERMOCOUPLE NR 4 WAS DETECTED WITH DAMAGE, IT WAS REPLACED IAW MM 77-21-03. PT2 AND PT7 WERE CHECKED AND NO LEAKS WERE DETECTED, TRIMMING WAS PERFORMED IAW MM 71-00-00, BUT DURING TAKE OFF POWER TEST, THE MAXIMUM TAKE OFF 2.069 (2.06 OF EPR) WAS NOT REACHED, IT ONLY WAS REACHED 2.02. RT ENGINE WAS REPLACED IAW MM 71-00-00 AND TESTED IAW MM 77-00-01, ALL CORRECT.

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