 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier widebody transport had fuel cross-feed problems at top of climb at the start of an extended overwather operation. Aircraft returned to departure airport for precautionary landing.
| Attributes | |
| ACN | 135657 |
| Time | |
| Date | 199002 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : jfk |
| State Reference | NY |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny tower : den |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : atlantic enroute : other oceanic enroute airway : a300 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 110 flight time total : 10500 flight time type : 350 |
| ASRS Report | 135657 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Shortly after reaching cruise altitude, x-feed operations were begun. Approximately 20 mins into x-feed operations it was observed that #3 tank qty was increasing while 2R qty was decreasing faster than 2L. Maximum differential between 2L and 2R was approximately 4500#. In accordance with flight handbook directives, x-feed operations were terminated. This resulted in #3 engine momentarily decreasing to idle power. Engine power returned to normal after 20 seconds. Immediate clearance back to jfk was obtained, and a satisfactory precautionary landing accomplished.
Original NASA ASRS Text
Title: ACR WDB HAD FUEL CROSS-FEED PROBLEMS AT TOP OF CLIMB AT THE START OF AN EXTENDED OVERWATHER OPERATION. ACFT RETURNED TO DEP ARPT FOR PRECAUTIONARY LNDG.
Narrative: SHORTLY AFTER REACHING CRUISE ALT, X-FEED OPS WERE BEGUN. APPROX 20 MINS INTO X-FEED OPS IT WAS OBSERVED THAT #3 TANK QTY WAS INCREASING WHILE 2R QTY WAS DECREASING FASTER THAN 2L. MAXIMUM DIFFERENTIAL BTWN 2L AND 2R WAS APPROX 4500#. IN ACCORDANCE WITH FLT HANDBOOK DIRECTIVES, X-FEED OPS WERE TERMINATED. THIS RESULTED IN #3 ENG MOMENTARILY DECREASING TO IDLE PWR. ENG PWR RETURNED TO NORMAL AFTER 20 SECS. IMMEDIATE CLRNC BACK TO JFK WAS OBTAINED, AND A SATISFACTORY PRECAUTIONARY LNDG ACCOMPLISHED.
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.