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B757 flight crew reported a trailing edge flap anomaly upon extension; resulting in a diversion to an airport with a longer runway.
| Attributes | |
| ACN | 1666306 |
| Time | |
| Date | 201907 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Flap Control (Trailing & Leading Edge) |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 139 Flight Crew Type 1282 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 239 Flight Crew Type 927 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Inflight Event / Encounter Weather / Turbulence |
Narrative:
Upon leaving; the WX (weather) forecast for ZZZZ was -RA ovc 025 tempo ovc 012. Upon arrival; the ATIS was showing -dz broken 003; tempo 2000 RA. ZZZZ1 WX was similar but ZZZZ2 was VFR; dry runway.arriving at ZZZZ; we initially planned an autoland. When lowering the flaps to 1; we noticed a split in the gauge but no EICAS. One flap read 1 when the other read zero. The handle was rechecked and the gauge was tapped. We ran the te (trailing edge) flap disagree checklist and planned a full le (leading eddge) slat vref 30 + 40 approach as directed and used the longest runway; best weather and driest runway. That was ZZZZ2 which was our primary alternate. Dispatch concurred with this decision and satcom patch with [operations control] offered no extra ideas. ZZZZ was ruled out due to almost CAT III conditions with a wet and shorter runway.we landed with 8500 pounds of gas taxied to the gate. One brake peaked at 4. Of course the flight attendant's; (flight attendants) passenger (passengers) were notified. [ATC was advised] as well.
Original NASA ASRS Text
Title: B757 flight crew reported a trailing edge flap anomaly upon extension; resulting in a diversion to an airport with a longer runway.
Narrative: Upon leaving; the WX (Weather) forecast for ZZZZ was -RA OVC 025 tempo OVC 012. Upon arrival; the ATIS was showing -DZ BKN 003; TEMPO 2000 RA. ZZZZ1 WX was similar but ZZZZ2 was VFR; dry runway.Arriving at ZZZZ; we initially planned an Autoland. When lowering the flaps to 1; we noticed a split in the gauge but no EICAS. One flap read 1 when the other read zero. The handle was rechecked and the gauge was tapped. We ran the TE (Trailing Edge) flap disagree checklist and planned a full LE (Leading Eddge) slat VREF 30 + 40 approach as directed and used the longest runway; best weather and driest runway. That was ZZZZ2 which was our primary alternate. Dispatch concurred with this decision and SATCOM patch with [Operations Control] offered no extra ideas. ZZZZ was ruled out due to almost CAT III conditions with a wet and shorter runway.We landed with 8500 pounds of gas taxied to the gate. One brake peaked at 4. Of course the FA's; (Flight Attendants) PAX (Passengers) were notified. [ATC was advised] as well.
Data retrieved from NASA's ASRS site 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.