An EMB145 first officer reports at climb power 1 engine has 30-70 degrees higher inlet turbine tempe...

Narrative:

We were climbing through FL340 with the thrust levers in the 'thrust set' position and thrust rating 'climb' when we noticed that the #1 engine itt was approaching the amber range. The itt's between the 2 engines differed by about 70 degrees. A few seconds later; the engine #1 itt did go into the amber range. We reduced thrust on that engine and the itt immediately reduced accordingly. When we leveled off at FL360 and switched to thrust rating 'cruise' the itt was well within the green range and the itt split between the 2 engines was about 30 degrees. We looked into the aom volume 1 to see if there was any procedures we should follow; but found only a procedure if the itt had gone into the red range; which did not apply to our situation. We sent a message to dispatch to advise them of the situation. Dispatcher replied that maintenance said to just monitor the parameters; and maintenance would look at it upon arrival. The flight continued uneventfully with all engine parameters well within normal parameters at all times. Aml entry was made upon block in. Also; after landing; EICAS message 'E1 exceedance' appeared. On the outbound leg to sav (the leg before this one) when we were leveling off at FL350; we noticed that engine #1 itt was in the upper range of the green range; but not in the amber. The itt split between the engines was; I think; around 60 degrees. We were a little concerned because this was not usual and the #1 engine had a seal replaced on it 2 days prior. We contacted maintenance to advise them of the engine parameters. While the captain flew the airplane; I talked to maintenance control. The gentleman said that we probably just had an old engine but that he would research further and that we should call him on the ground in sav. When we called him from sav; he talked to the captain. He told us that engine #1 did not show anything outside of limits; including the parameters that we told him. He said that maintenance control was aware that during the past 2 yrs that engine was running a little hotter than normal; but since it was still in the green range; there was no action that needed to be taken. He told us that they would probably schedule the engine to be changed in the next few weeks. In summary; we were safe to fly because the engine was operating within normal parameters.

Original NASA ASRS Text

Title: AN EMB145 FO RPTS AT CLB PWR 1 ENG HAS 30-70 DEGS HIGHER INLET TURBINE TEMP THAN #2 ENG. TEMPS STILL IN GREEN BAND.

Narrative: WE WERE CLBING THROUGH FL340 WITH THE THRUST LEVERS IN THE 'THRUST SET' POS AND THRUST RATING 'CLB' WHEN WE NOTICED THAT THE #1 ENG ITT WAS APCHING THE AMBER RANGE. THE ITT'S BTWN THE 2 ENGS DIFFERED BY ABOUT 70 DEGS. A FEW SECONDS LATER; THE ENG #1 ITT DID GO INTO THE AMBER RANGE. WE REDUCED THRUST ON THAT ENG AND THE ITT IMMEDIATELY REDUCED ACCORDINGLY. WHEN WE LEVELED OFF AT FL360 AND SWITCHED TO THRUST RATING 'CRUISE' THE ITT WAS WELL WITHIN THE GREEN RANGE AND THE ITT SPLIT BTWN THE 2 ENGS WAS ABOUT 30 DEGS. WE LOOKED INTO THE AOM VOLUME 1 TO SEE IF THERE WAS ANY PROCS WE SHOULD FOLLOW; BUT FOUND ONLY A PROC IF THE ITT HAD GONE INTO THE RED RANGE; WHICH DID NOT APPLY TO OUR SIT. WE SENT A MESSAGE TO DISPATCH TO ADVISE THEM OF THE SIT. DISPATCHER REPLIED THAT MAINT SAID TO JUST MONITOR THE PARAMETERS; AND MAINT WOULD LOOK AT IT UPON ARR. THE FLT CONTINUED UNEVENTFULLY WITH ALL ENG PARAMETERS WELL WITHIN NORMAL PARAMETERS AT ALL TIMES. AML ENTRY WAS MADE UPON BLOCK IN. ALSO; AFTER LNDG; EICAS MESSAGE 'E1 EXCEEDANCE' APPEARED. ON THE OUTBOUND LEG TO SAV (THE LEG BEFORE THIS ONE) WHEN WE WERE LEVELING OFF AT FL350; WE NOTICED THAT ENG #1 ITT WAS IN THE UPPER RANGE OF THE GREEN RANGE; BUT NOT IN THE AMBER. THE ITT SPLIT BTWN THE ENGS WAS; I THINK; AROUND 60 DEGS. WE WERE A LITTLE CONCERNED BECAUSE THIS WAS NOT USUAL AND THE #1 ENG HAD A SEAL REPLACED ON IT 2 DAYS PRIOR. WE CONTACTED MAINT TO ADVISE THEM OF THE ENG PARAMETERS. WHILE THE CAPT FLEW THE AIRPLANE; I TALKED TO MAINT CTL. THE GENTLEMAN SAID THAT WE PROBABLY JUST HAD AN OLD ENG BUT THAT HE WOULD RESEARCH FURTHER AND THAT WE SHOULD CALL HIM ON THE GND IN SAV. WHEN WE CALLED HIM FROM SAV; HE TALKED TO THE CAPT. HE TOLD US THAT ENG #1 DID NOT SHOW ANYTHING OUTSIDE OF LIMITS; INCLUDING THE PARAMETERS THAT WE TOLD HIM. HE SAID THAT MAINT CTL WAS AWARE THAT DURING THE PAST 2 YRS THAT ENG WAS RUNNING A LITTLE HOTTER THAN NORMAL; BUT SINCE IT WAS STILL IN THE GREEN RANGE; THERE WAS NO ACTION THAT NEEDED TO BE TAKEN. HE TOLD US THAT THEY WOULD PROBABLY SCHEDULE THE ENG TO BE CHANGED IN THE NEXT FEW WKS. IN SUMMARY; WE WERE SAFE TO FLY BECAUSE THE ENG WAS OPERATING WITHIN NORMAL PARAMETERS.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	667916
Time
Date	200508
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 34000 msl bound upper : 36000
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : enroute altitude change
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	667916
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : #1 engine inlet temp other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Consequence	other
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Chart Or Publication Flight Crew Human Performance
Primary Problem	Aircraft

An EMB145 first officer reports at climb power 1 engine has 30-70 degrees higher inlet turbine temperature than #2 engine. Temperatures still in green band.