 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B757-200 on final approach at 1500 ft, selecting flaps 30 degrees caused a flap disagreement warning. Flap operation normal on ground.
| Attributes | |
| ACN | 612768 |
| Time | |
| Date | 200403 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mdw.airport |
| State Reference | IL |
| Altitude | msl single value : 1500 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Fog |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mdw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : holding |
| Route In Use | arrival : holding pattern |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 7.775 flight time type : 1375 |
| ASRS Report | 612768 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : flap disagree warning other flight crewa other flight crewb |
| Resolutory Action | aircraft : equipment problem dissipated |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
We had gone around the holding pattern several times before we were able to shoot an approach in very widespread low visibility and fog. Our assigned alternate was about 240 mi away. We were the first aircraft in nearly an hour to shoot an approach, as the previous few aircraft missed. Gear down and flaps 20 degrees successful. Flaps to 30 degrees caused a disagreement. In the split second time, I had to make a decision, I elected to continue approach because I wasn't sure we had enough gas to make it to any of our alternates should flaps have to remain at 20 degrees. We broke out and landed successfully and flaps came up after landing.
Original NASA ASRS Text
Title: A B757-200 ON FINAL APCH AT 1500 FT, SELECTING FLAPS 30 DEGS CAUSED A FLAP DISAGREEMENT WARNING. FLAP OP NORMAL ON GND.
Narrative: WE HAD GONE AROUND THE HOLDING PATTERN SEVERAL TIMES BEFORE WE WERE ABLE TO SHOOT AN APCH IN VERY WIDESPREAD LOW VISIBILITY AND FOG. OUR ASSIGNED ALTERNATE WAS ABOUT 240 MI AWAY. WE WERE THE FIRST ACFT IN NEARLY AN HR TO SHOOT AN APCH, AS THE PREVIOUS FEW ACFT MISSED. GEAR DOWN AND FLAPS 20 DEGS SUCCESSFUL. FLAPS TO 30 DEGS CAUSED A DISAGREEMENT. IN THE SPLIT SECOND TIME, I HAD TO MAKE A DECISION, I ELECTED TO CONTINUE APCH BECAUSE I WASN'T SURE WE HAD ENOUGH GAS TO MAKE IT TO ANY OF OUR ALTERNATES SHOULD FLAPS HAVE TO REMAIN AT 20 DEGS. WE BROKE OUT AND LANDED SUCCESSFULLY AND FLAPS CAME UP AFTER LNDG.
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.