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Flight crew set wrong flap for type of aircraft they were flying and had flap warning. Aborted takeoff.
| Attributes | |
| ACN | 163353 |
| Time | |
| Date | 199011 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sfo |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 4200 flight time type : 2700 |
| ASRS Report | 163353 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 207 flight time total : 23858 flight time type : 2119 |
| ASRS Report | 163336 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : rejected takeoff flight crew : overcame equipment problem |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Crew had flown 8+ hours first day of 3 day trip with sufficient crew rest. Second day, third leg switched equipment. First very advanced medium large transport type. Trip checklists all completed and crosschecked. Flaps selected and set. Cleared for takeoff. Captain advanced throttles. The warning horn sounded. Crew quickly checked trim, flaps, speed brake all normal. Rejected the takeoff at 60 KTS. On taxi off, first officer noticed flaps set at 1 degree vice 5 degrees for very advanced medium large transport. Advanced and normal takeoff is with flaps 1 degree. Crews swap aircraft types frequently. Need visibility aid on flap gauge on very advanced to highlight difference. Callback conversation with reporter revealed the following: reporter suggests slots that the flap handle will drop into for each desired setting. Also suggests that a callout on the checklist of what flap setting has been selected rather than just 'flaps, set.'
Original NASA ASRS Text
Title: FLT CREW SET WRONG FLAP FOR TYPE OF ACFT THEY WERE FLYING AND HAD FLAP WARNING. ABORTED TKOF.
Narrative: CREW HAD FLOWN 8+ HRS FIRST DAY OF 3 DAY TRIP WITH SUFFICIENT CREW REST. SECOND DAY, THIRD LEG SWITCHED EQUIP. FIRST VERY ADVANCED MLG TYPE. TRIP CHKLISTS ALL COMPLETED AND XCHKED. FLAPS SELECTED AND SET. CLRED FOR TKOF. CAPT ADVANCED THROTTLES. THE WARNING HORN SOUNDED. CREW QUICKLY CHKED TRIM, FLAPS, SPD BRAKE ALL NORMAL. REJECTED THE TKOF AT 60 KTS. ON TAXI OFF, F/O NOTICED FLAPS SET AT 1 DEG VICE 5 DEGS FOR VERY ADVANCED MLG. ADVANCED AND NORMAL TKOF IS WITH FLAPS 1 DEG. CREWS SWAP ACFT TYPES FREQUENTLY. NEED VIS AID ON FLAP GAUGE ON VERY ADVANCED TO HIGHLIGHT DIFFERENCE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR SUGGESTS SLOTS THAT THE FLAP HANDLE WILL DROP INTO FOR EACH DESIRED SETTING. ALSO SUGGESTS THAT A CALLOUT ON THE CHKLIST OF WHAT FLAP SETTING HAS BEEN SELECTED RATHER THAN JUST 'FLAPS, SET.'
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.