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Md super 80 during pushback and left engine start the engine was slow to accelerate and thrust lever was advanced per procedures. Excessive power broke the nose gear tow bar nose pin.
| Attributes | |
| ACN | 462652 |
| Time | |
| Date | 200002 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mmmx.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| 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 : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| ASRS Report | 462652 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
During pushback and left engine start, N2 stagnated at 45. Captain followed procedure and advanced throttle to 65 N2. Engine accelerated slowly. At the same time, ground control called to give alternate pushback clearance. I became distraction trying to understand the mexican ground controller and did not realize that the left throttle was still advanced. Apparently, excessive power may have been a factor in the breaking of the tow bar nose pin.
Original NASA ASRS Text
Title: MD SUPER 80 DURING PUSHBACK AND L ENG START THE ENG WAS SLOW TO ACCELERATE AND THRUST LEVER WAS ADVANCED PER PROCS. EXCESSIVE PWR BROKE THE NOSE GEAR TOW BAR NOSE PIN.
Narrative: DURING PUSHBACK AND L ENG START, N2 STAGNATED AT 45. CAPT FOLLOWED PROC AND ADVANCED THROTTLE TO 65 N2. ENG ACCELERATED SLOWLY. AT THE SAME TIME, GND CTL CALLED TO GIVE ALTERNATE PUSHBACK CLRNC. I BECAME DISTR TRYING TO UNDERSTAND THE MEXICAN GND CTLR AND DID NOT REALIZE THAT THE L THROTTLE WAS STILL ADVANCED. APPARENTLY, EXCESSIVE PWR MAY HAVE BEEN A FACTOR IN THE BREAKING OF THE TOW BAR NOSE PIN.
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.