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An MD80 on advancing throttle to takeoff power the right engine did not indicate engine pressure ratio. Shut down engine and right pack. Normal indication on restart of engine.
| Attributes | |
| ACN | 657049 |
| Time | |
| Date | 200505 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mmmx.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 657049 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 657048 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : right epr indicator other flight crewa other flight crewb |
| Resolutory Action | aircraft : equipment problem dissipated controller : issued new clearance flight crew : rejected takeoff flight crew : overcame equipment problem |
| Consequence | other other Other |
| Supplementary | |
| Problem Areas | Aircraft Airport Chart Or Publication Environmental Factor Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Ambiguous |
Narrative:
We were cleared for takeoff on runway 5R. When the throttle was advanced the right engine did not respond. I told tower we were not going to take off and were going to taxi off the runway. When clear of the runway we stopped the airplane and shut down the right engine. We contacted maintenance. They recommended we try turning off the pack and advancing the throttle. We restarted the engine; and with the pack off the engine responded normally. We turned the pack back on and all was normal. Maintenance indicated that this was not a too uncommon problem at MMMX and there was no real problem. We then took off and the remainder of the flight was normal. Maximum speed while taxiing off the runway was no greater than 15 KTS. We had taxied out on the left engine only; and had not tried to advance the right throttle prior to takeoff.
Original NASA ASRS Text
Title: AN MD80 ON ADVANCING THROTTLE TO TKOF PWR THE R ENG DID NOT INDICATE ENG PRESSURE RATIO. SHUT DOWN ENG AND R PACK. NORMAL INDICATION ON RESTART OF ENG.
Narrative: WE WERE CLRED FOR TKOF ON RWY 5R. WHEN THE THROTTLE WAS ADVANCED THE R ENG DID NOT RESPOND. I TOLD TWR WE WERE NOT GOING TO TAKE OFF AND WERE GOING TO TAXI OFF THE RWY. WHEN CLR OF THE RWY WE STOPPED THE AIRPLANE AND SHUT DOWN THE R ENG. WE CONTACTED MAINT. THEY RECOMMENDED WE TRY TURNING OFF THE PACK AND ADVANCING THE THROTTLE. WE RESTARTED THE ENG; AND WITH THE PACK OFF THE ENG RESPONDED NORMALLY. WE TURNED THE PACK BACK ON AND ALL WAS NORMAL. MAINT INDICATED THAT THIS WAS NOT A TOO UNCOMMON PROB AT MMMX AND THERE WAS NO REAL PROB. WE THEN TOOK OFF AND THE REMAINDER OF THE FLT WAS NORMAL. MAX SPD WHILE TAXIING OFF THE RWY WAS NO GREATER THAN 15 KTS. WE HAD TAXIED OUT ON THE L ENG ONLY; AND HAD NOT TRIED TO ADVANCE THE R THROTTLE PRIOR TO TKOF.
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.