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An air carrier widebody transport had to dump fuel and return land with an aircraft equipment problem #3 pneumatic system failure.
| Attributes | |
| ACN | 359386 |
| Time | |
| Date | 199701 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : iad |
| State Reference | VA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : iad |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial other other |
| Route In Use | departure other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 11000 flight time type : 4000 |
| ASRS Report | 359386 |
| 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 non adherence : far other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Aircraft experienced a failure of #3 pneumatic system immediately after takeoff. With failure, wing anti-ice was unavailable. Decision was made to dump fuel and return to departure airport. In order to preclude wing icing, airspeed was increased above 250 KT speed limit (below 10000 ft) to raise tat above 0 degrees C. In our rush to complete emergency procedures, we did not inform ATC of the higher speed that we were flying. This information might have been helpful to ATC. Fuel was dumped. Aircraft departed icing conditions, and an uneventful normal landing was made.
Original NASA ASRS Text
Title: AN ACR WDB HAD TO DUMP FUEL AND RETURN LAND WITH AN ACFT EQUIP PROB #3 PNEUMATIC SYS FAILURE.
Narrative: ACFT EXPERIENCED A FAILURE OF #3 PNEUMATIC SYS IMMEDIATELY AFTER TKOF. WITH FAILURE, WING ANTI-ICE WAS UNAVAILABLE. DECISION WAS MADE TO DUMP FUEL AND RETURN TO DEP ARPT. IN ORDER TO PRECLUDE WING ICING, AIRSPD WAS INCREASED ABOVE 250 KT SPD LIMIT (BELOW 10000 FT) TO RAISE TAT ABOVE 0 DEGS C. IN OUR RUSH TO COMPLETE EMER PROCS, WE DID NOT INFORM ATC OF THE HIGHER SPD THAT WE WERE FLYING. THIS INFO MIGHT HAVE BEEN HELPFUL TO ATC. FUEL WAS DUMPED. ACFT DEPARTED ICING CONDITIONS, AND AN UNEVENTFUL NORMAL 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.