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Medium large transport landing on wet runway departed runway at approximately 70 KTS after applying brakes.
| Attributes | |
| ACN | 109620 |
| Time | |
| Date | 198904 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : dab |
| State Reference | FL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 110 flight time total : 2410 flight time type : 105 |
| ASRS Report | 109237 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 12000 flight time type : 3200 |
| ASRS Report | 109237 |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control none taken : insufficient time |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Incident: runway excursion. Conditions: night, VMC, ceiling approximately 2500', visibility 6+, wet runway. Location: runway 25R, dab. Approach: backcourse localizer 25R. Description: approach flown normally, field picked up at 6 mi. Normal T/D approximately 1000' down runway slightly left of centerline. Reverse thrust applied immediately. Slight correction to centerline rollout, normal. At approximately 70 KTS G/south as reverse thrust was removed and wheel brake applied aircraft veered abruptly 20-30 degrees to right. Opp rudder and brake applied to correct back. Controls were not effective. Full braking applied to attempt stop. Insufficient time and distance. Aircraft departed the runway and came to a stop 30-50' off right side of runway with approximately 3200' remaining. Aircraft was shut down. No emergency evacuate/evacuation was conducted. Passenger and crew exited via mobile stairways. No injuries incurred. Aircraft departed runway at approximately 50 KTS. Possible causes: 1) ungrooved, wet runway (partial hydroplaning potential); 2) possible locked right brake; 3) possible thrust reverse slow to stow. With #1 above, either of next 2 items could have caused aircraft to veer abruptly right, leaving insufficient time and control authority to correct the situation.
Original NASA ASRS Text
Title: MLG LNDG ON WET RWY DEPARTED RWY AT APPROX 70 KTS AFTER APPLYING BRAKES.
Narrative: INCIDENT: RWY EXCURSION. CONDITIONS: NIGHT, VMC, CEILING APPROX 2500', VISIBILITY 6+, WET RWY. LOCATION: RWY 25R, DAB. APCH: BACKCOURSE LOC 25R. DESCRIPTION: APCH FLOWN NORMALLY, FIELD PICKED UP AT 6 MI. NORMAL T/D APPROX 1000' DOWN RWY SLIGHTLY LEFT OF CENTERLINE. REVERSE THRUST APPLIED IMMEDIATELY. SLIGHT CORRECTION TO CENTERLINE ROLLOUT, NORMAL. AT APPROX 70 KTS G/S AS REVERSE THRUST WAS REMOVED AND WHEEL BRAKE APPLIED ACFT VEERED ABRUPTLY 20-30 DEGS TO RIGHT. OPP RUDDER AND BRAKE APPLIED TO CORRECT BACK. CONTROLS WERE NOT EFFECTIVE. FULL BRAKING APPLIED TO ATTEMPT STOP. INSUFFICIENT TIME AND DISTANCE. ACFT DEPARTED THE RWY AND CAME TO A STOP 30-50' OFF RIGHT SIDE OF RWY WITH APPROX 3200' REMAINING. ACFT WAS SHUT DOWN. NO EMER EVAC WAS CONDUCTED. PAX AND CREW EXITED VIA MOBILE STAIRWAYS. NO INJURIES INCURRED. ACFT DEPARTED RWY AT APPROX 50 KTS. POSSIBLE CAUSES: 1) UNGROOVED, WET RWY (PARTIAL HYDROPLANING POTENTIAL); 2) POSSIBLE LOCKED RIGHT BRAKE; 3) POSSIBLE THRUST REVERSE SLOW TO STOW. WITH #1 ABOVE, EITHER OF NEXT 2 ITEMS COULD HAVE CAUSED ACFT TO VEER ABRUPTLY RIGHT, LEAVING INSUFFICIENT TIME AND CONTROL AUTHORITY TO CORRECT THE SITUATION.
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.