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A B767-300ER on a test flight after heavy maintenance during the alternate flap extension test has EICAS warning 'slat disagree.' second attempt had same indications.
| Attributes | |
| ACN | 702533 |
| Time | |
| Date | 200606 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : ukw.vortac |
| State Reference | TX |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 702533 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : eicas warning slat disagree other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Aircraft |
Narrative:
Aircraft on heavy check test flight after maintenance base visit. During in-flight check of alternate flap extension; EICAS leading edge slat disagree caution displayed and leading edge slat disagree light illuminated with flaps at 3 degrees. Both indications were intermittent. During second attempt the same indications displayed after flaps reached 5 degrees. Note: the alternate flap check was performed before flight and after landing and the alternate flap system operated normal. Maintenance action was performed and the alternate flaps operated normal on the refly.
Original NASA ASRS Text
Title: A B767-300ER ON A TEST FLT AFTER HVY MAINT DURING THE ALTERNATE FLAP EXTENSION TEST HAS EICAS WARNING 'SLAT DISAGREE.' SECOND ATTEMPT HAD SAME INDICATIONS.
Narrative: ACFT ON HVY CHK TEST FLT AFTER MAINT BASE VISIT. DURING INFLT CHK OF ALTERNATE FLAP EXTENSION; EICAS LEADING EDGE SLAT DISAGREE CAUTION DISPLAYED AND LEADING EDGE SLAT DISAGREE LIGHT ILLUMINATED WITH FLAPS AT 3 DEGS. BOTH INDICATIONS WERE INTERMITTENT. DURING SECOND ATTEMPT THE SAME INDICATIONS DISPLAYED AFTER FLAPS REACHED 5 DEGS. NOTE: THE ALTERNATE FLAP CHK WAS PERFORMED BEFORE FLT AND AFTER LNDG AND THE ALTERNATE FLAP SYS OPERATED NORMAL. MAINT ACTION WAS PERFORMED AND THE ALTERNATE FLAPS OPERATED NORMAL ON THE REFLY.
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.