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Air carrier large transport landed with leading edge flaps retracted trailing flaps normal at 30 degrees.
| Attributes | |
| ACN | 100261 |
| Time | |
| Date | 198812 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mci |
| State Reference | MO |
| Altitude | agl bound lower : 0 agl bound upper : 2400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mci |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | landing other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 6000 |
| ASRS Report | 100261 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
After extension, the outboard wing flaps and leading edge devices retracted without an up command when flaps were extended from 25 degree to 30 degree on approach. All other procedures and the landing was made safely with 20-25 KTS added to normal approach speeds. Flaps extended normally then retracted to inboard trailing edge flaps only without any command. Flap handle was left in 30 degree detent and not moved.
Original NASA ASRS Text
Title: ACR LGT LANDED WITH LEADING EDGE FLAPS RETRACTED TRAILING FLAPS NORMAL AT 30 DEGREES.
Narrative: AFTER EXTENSION, THE OUTBOARD WING FLAPS AND LEADING EDGE DEVICES RETRACTED WITHOUT AN UP COMMAND WHEN FLAPS WERE EXTENDED FROM 25 DEG TO 30 DEG ON APCH. ALL OTHER PROCEDURES AND THE LNDG WAS MADE SAFELY WITH 20-25 KTS ADDED TO NORMAL APCH SPEEDS. FLAPS EXTENDED NORMALLY THEN RETRACTED TO INBOARD TRAILING EDGE FLAPS ONLY WITHOUT ANY COMMAND. FLAP HANDLE WAS LEFT IN 30 DEG DETENT AND NOT MOVED.
Data retrieved from NASA's ASRS site as of August 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.