MD80 flight crew exceeds recommended thrust during power back at dfw.

Attributes
ACN	437320
Time
Date	199905
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : stl.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	ground : pushback
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	437320
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	aircraft equipment problem : less severe non adherence : company policies
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

During power back at dfw both engines were stable at 1.2 EPR. I then diverted most of my attention outside to judge rearward speed and watch for the guideman's forward signal. With no additional movement of the reverse thrust levers, the left engine accelerated to 1.33 EPR before I could catch it. An entry was made in the operating manual.

Original NASA ASRS Text

Title: MD80 FLC EXCEEDS RECOMMENDED THRUST DURING PWR BACK AT DFW.

Narrative: DURING PWR BACK AT DFW BOTH ENGS WERE STABLE AT 1.2 EPR. I THEN DIVERTED MOST OF MY ATTN OUTSIDE TO JUDGE REARWARD SPD AND WATCH FOR THE GUIDEMAN'S FORWARD SIGNAL. WITH NO ADDITIONAL MOVEMENT OF THE REVERSE THRUST LEVERS, THE L ENG ACCELERATED TO 1.33 EPR BEFORE I COULD CATCH IT. AN ENTRY WAS MADE IN THE OPERATING MANUAL.

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.