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Momentary flaps 1 degree overspeed may have contributed to leading edge device disagree message for B767-300ER.
| Attributes | |
| ACN | 779417 |
| Time | |
| Date | 200803 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 5000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : charted visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 14800 flight time type : 5000 |
| ASRS Report | 779417 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : eicas |
| Resolutory Action | flight crew : overcame equipment problem other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
During approach into ZZZ airport; first officer flying aircraft. Captain looking outside for traffic we were told to follow. Flaps 1 degree selected (maximum 250 KIAS). While turning and descending; aircraft momentarily reached 262 KTS. Speed quickly reduced. Leading edge devices showed disagreement. Emergency declared. Eventually landed with flaps 20 degrees.
Original NASA ASRS Text
Title: MOMENTARY FLAPS 1 DEG OVERSPEED MAY HAVE CONTRIBUTED TO LEADING EDGE DEVICE DISAGREE MESSAGE FOR B767-300ER.
Narrative: DURING APCH INTO ZZZ ARPT; FO FLYING ACFT. CAPT LOOKING OUTSIDE FOR TFC WE WERE TOLD TO FOLLOW. FLAPS 1 DEG SELECTED (MAX 250 KIAS). WHILE TURNING AND DSNDING; ACFT MOMENTARILY REACHED 262 KTS. SPEED QUICKLY REDUCED. LEADING EDGE DEVICES SHOWED DISAGREEMENT. EMER DECLARED. EVENTUALLY LANDED WITH FLAPS 20 DEGS.
Data retrieved from NASA's ASRS site as of May 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.