Aircraft equipment problem. Engines not developing maximum power during takeoff roll. Autothrottles ...

Attributes
ACN	336627
Time
Date	199605
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lga
State Reference	NY
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	336627
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : insufficient time other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During takeoff at lga runway 31, captain takeoff, maximum power utilized, it was observed that aircraft had reached a point with approximately 2500-2000 ft remaining and airspeed 10-15 KTS below V1. Engines had attained programmed maximum power and stable. I deemed it necessary to continue takeoff but was compelled to turn off autothrottles and advance power above maximum power. Left engine achieved approximately 2.03 EPR right engine approximately 2.01 EPR. Left engine egt observed approximately 615 engine approximately 580 rankin (right). After which normal takeoff was made with power reduction approximately 20 seconds later. Flight was continued with discussion concerning engine limits. Being that observed egt for both within limits to continue, made decision to continue to dfw. During course of flight I felt it prudent to pass incident and engine performance to dispatch and technician in order to be on the conservative side of safety. After talking to technician it was recommended that we land for maintenance check. Aircraft diverted to bna where uneventful landing was made.

Original NASA ASRS Text

Title: ACFT EQUIP PROB. ENGS NOT DEVELOPING MAX PWR DURING TKOF ROLL. AUTOTHROTTLES TURNED OFF AND PWR ADVANCED ABOVE MAX. FLT CONTINUED, BUT THEN DIVERTED AFTER CONSULTING WITH COMPANY MAINT.

Narrative: DURING TKOF AT LGA RWY 31, CAPT TKOF, MAX PWR UTILIZED, IT WAS OBSERVED THAT ACFT HAD REACHED A POINT WITH APPROX 2500-2000 FT REMAINING AND AIRSPD 10-15 KTS BELOW V1. ENGS HAD ATTAINED PROGRAMMED MAX PWR AND STABLE. I DEEMED IT NECESSARY TO CONTINUE TKOF BUT WAS COMPELLED TO TURN OFF AUTOTHROTTLES AND ADVANCE PWR ABOVE MAX PWR. L ENG ACHIEVED APPROX 2.03 EPR R ENG APPROX 2.01 EPR. L ENG EGT OBSERVED APPROX 615 ENG APPROX 580 RANKIN (R). AFTER WHICH NORMAL TKOF WAS MADE WITH PWR REDUCTION APPROX 20 SECONDS LATER. FLT WAS CONTINUED WITH DISCUSSION CONCERNING ENG LIMITS. BEING THAT OBSERVED EGT FOR BOTH WITHIN LIMITS TO CONTINUE, MADE DECISION TO CONTINUE TO DFW. DURING COURSE OF FLT I FELT IT PRUDENT TO PASS INCIDENT AND ENG PERFORMANCE TO DISPATCH AND TECHNICIAN IN ORDER TO BE ON THE CONSERVATIVE SIDE OF SAFETY. AFTER TALKING TO TECHNICIAN IT WAS RECOMMENDED THAT WE LAND FOR MAINT CHK. ACFT DIVERTED TO BNA WHERE UNEVENTFUL LNDG WAS MADE.

Data retrieved from NASA's ASRS site as of July 2007 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.

Aircraft equipment problem. Engines not developing maximum power during takeoff roll. Autothrottles turned off and power advanced above maximum. Flight continued, but then diverted after consulting with company maintenance.