37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 917595 |
Time | |
Date | 201011 |
Local Time Of Day | 1801-2400 |
Place | |
Locale Reference | ZZZ.Airport |
State Reference | US |
Environment | |
Flight Conditions | VMC |
Light | Night |
Aircraft 1 | |
Make Model Name | MD-11 |
Operating Under FAR Part | Part 121 |
Flight Phase | Takeoff |
Flight Plan | IFR |
Component | |
Aircraft Component | Aileron Control System |
Person 1 | |
Function | First Officer Pilot Not Flying |
Events | |
Anomaly | Deviation - Procedural Published Material / Policy |
Narrative:
When I did the takeoff performance card I used non-deflected ailerons. During the control check I noticed that when the ailerons were neutral they deflected; we noted that our aircraft did not have the deflected ailerons system deactivated and I re-ran the numbers again to get the correct flap; stab and v-speeds. We then set the correct flap; stab and v-speeds and continued our taxi and takeoff.on takeoff roll about 110 KTS; we received the flap alert call out and the captain rejected the takeoff. He advised the passengers and cabin attendants to remain seated and taxied off the runway; checked the configuration page for flaps and brake temp and then completed the after landing checklist and started to work out what the problem was. We then figured out that when we changed to the correct configuration settings; we must have overlooked the FMS flap setting that still had the original flap setting programmed. We figured that this must have been the problem and input the correct flap setting into the FMS and then taxied back for another takeoff. During the taxi we received a level 2 brake overheat and determined we needed to return to the gate and have maintenance checkout the brakes and the tires. Maintenance checked the tires and brakes and allowed the brakes to cool down; then signed off the logbook and told us all was good to go.we pushed back from the gate and just before taxi we get a tire pressure differential alert. We selected the configuration page and saw #5 tire pressure was about 40 psi below the others and looked up volume 1 checklist and saw that it was a no takeoff item. So we returned to the gate and maintenance had to change the tire. Fifteen minutes later we pushed back from the gate and took off to our destination with no further problems.all of our md-11 fleet has a non-deflective ailerons except this aircraft. I suggest that we deactivate the system and standardize all md-11 to have a non-deflective ailerons so this would not happen again in the future.
Original NASA ASRS Text
Title: An MD-11 flight crew utilized an inappropriate deflected aileron configuration for their takeoff calculations resulting in a configuration warning; a rejected takeoff; overheated brakes and the ultimate need to replace one tire.
Narrative: When I did the takeoff performance card I used non-deflected ailerons. During the control check I noticed that when the ailerons were neutral they deflected; we noted that our aircraft did not have the deflected ailerons system deactivated and I re-ran the numbers again to get the correct flap; stab and V-speeds. We then set the correct flap; stab and V-speeds and continued our taxi and takeoff.On takeoff roll about 110 KTS; we received the flap alert call out and the Captain rejected the takeoff. He advised the Passengers and Cabin Attendants to remain seated and taxied off the runway; checked the configuration page for flaps and brake temp and then completed the after landing checklist and started to work out what the problem was. We then figured out that when we changed to the correct configuration settings; we must have overlooked the FMS flap setting that still had the original flap setting programmed. We figured that this must have been the problem and input the correct flap setting into the FMS and then taxied back for another takeoff. During the taxi we received a level 2 brake overheat and determined we needed to return to the gate and have maintenance checkout the brakes and the tires. Maintenance checked the tires and brakes and allowed the brakes to cool down; then signed off the logbook and told us all was good to go.We pushed back from the gate and just before taxi we get a Tire Pressure Differential alert. We selected the configuration page and saw #5 tire pressure was about 40 PSI below the others and looked up volume 1 checklist and saw that it was a no takeoff item. So we returned to the gate and Maintenance had to change the tire. Fifteen minutes later we pushed back from the gate and took off to our destination with no further problems.All of our MD-11 fleet has a non-deflective ailerons except this aircraft. I suggest that we deactivate the system and standardize all MD-11 to have a non-deflective ailerons so this would not happen again in the future.
Data retrieved from NASA's ASRS site as of April 2012 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.