 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An MD11 freighter bound for zsss starts a return to beijing when the flap disagree checklist has to be used. Zbaa, first officer.
| Attributes | |
| ACN | 443294 |
| Time | |
| Date | 199907 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zbaa.airport |
| State Reference | FO |
| Altitude | msl single value : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zbaa.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5500 flight time type : 1300 |
| ASRS Report | 443294 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 13500 flight time type : 3000 |
| ASRS Report | 443293 |
| Events | |
| Anomaly | aircraft equipment problem : critical conflict : airborne less severe non adherence : required legal separation other anomaly other anomaly |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment other aircraft equipment : flap / slat disagree other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued advisory flight crew : regained aircraft control flight crew : overcame equipment problem |
| Miss Distance | horizontal : 15000 vertical : 1 |
| Supplementary | |
| Problem Areas | Airspace Structure Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
After takeoff from beijing the flaps retracted from 25 degrees to 22 degrees and stopped. I was the PF so I continued the departure and handled the radio while the PNF ran the 'flap disagree' checklist. He couldn't get the flaps up so we made a decision to return to beijing. During the descent he attempted to retract the flaps near approach speed. The flaps retracted and the autoplt disconnected and the aircraft pitched up as the speed increased to avoid a stall. Beijing control reported traffic which we saw and it appeared to not be a conflict. Eventually we were cleared to climb and continue to our destination. Primary concern was control of the aircraft with the pitch up and increased stall speed with the flaps retracting. What we should have done is kept the flaps where they were and landed with partial flaps.
Original NASA ASRS Text
Title: AN MD11 FREIGHTER BOUND FOR ZSSS STARTS A RETURN TO BEIJING WHEN THE FLAP DISAGREE CHKLIST HAS TO BE USED. ZBAA, FO.
Narrative: AFTER TKOF FROM BEIJING THE FLAPS RETRACTED FROM 25 DEGS TO 22 DEGS AND STOPPED. I WAS THE PF SO I CONTINUED THE DEP AND HANDLED THE RADIO WHILE THE PNF RAN THE 'FLAP DISAGREE' CHKLIST. HE COULDN'T GET THE FLAPS UP SO WE MADE A DECISION TO RETURN TO BEIJING. DURING THE DSCNT HE ATTEMPTED TO RETRACT THE FLAPS NEAR APCH SPD. THE FLAPS RETRACTED AND THE AUTOPLT DISCONNECTED AND THE ACFT PITCHED UP AS THE SPD INCREASED TO AVOID A STALL. BEIJING CTL RPTED TFC WHICH WE SAW AND IT APPEARED TO NOT BE A CONFLICT. EVENTUALLY WE WERE CLRED TO CLB AND CONTINUE TO OUR DEST. PRIMARY CONCERN WAS CTL OF THE ACFT WITH THE PITCH UP AND INCREASED STALL SPD WITH THE FLAPS RETRACTING. WHAT WE SHOULD HAVE DONE IS KEPT THE FLAPS WHERE THEY WERE AND LANDED WITH PARTIAL FLAPS.
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.