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|
Attributes | |
ACN | 307128 |
Time | |
Date | 199506 |
Day | Sun |
Local Time Of Day | 0601 To 1200 |
Place | |
Locale Reference | airport : pit |
State Reference | PA |
Altitude | agl bound lower : 0 agl bound upper : 0 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | Commercial Fixed Wing |
Operating Under FAR Part | Part 121 |
Flight Phase | ground other : taxi |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : flight engineer pilot : atp |
Experience | flight time last 90 days : 150 flight time total : 10000 flight time type : 5500 |
ASRS Report | 307128 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
Events | |
Anomaly | aircraft equipment problem : critical other anomaly other anomaly other other anomaly other |
Independent Detector | other controllera other flight crewa |
Resolutory Action | none taken : unable |
Consequence | Other |
Supplementary | |
Primary Problem | Aircraft |
Air Traffic Incident | other |
Situations | |
ATC Facility | procedure or policy : unspecified |
Narrative:
After a normal landing in VFR conditions, dry runway, the captain was applying brakes as aircraft slowed through about 90 KTS at a point approximately 4000 ft down runway. There was traffic about 3 1/2 mi out on final and pit tower cleared a jetstream 31 commuter aircraft into position and hold in anticipation of allowing a takeoff as we exited the runway. As aircraft slowed below 60 KTS (rapidly slowing), the captain turned the aircraft left toward a reverse high-speed turn off to exit the runway. At approximately 20 KTS and after 45-50 ft of turnoff, the aircraft slid straight ahead toward the taxiway edge and stopped with the right wing overhanging the runway. The anti-skid had locked both left main wheels, skidding the aircraft. The captain stopped steering input via nosewheel and stopped the aircraft to analyze the situation. I immediately advised ATC that we had not cleared the runway. ATC canceled the takeoff clearance for the commuter and sent the jet on final around. I believe there was no conflict or loss of normal separation. This was a mechanical failure at an unexpected time and in an unusual manner, as evidenced by the slow speed involved and the rarity of occurrence. As for corrective action, ATC should not so aggressively move traffic onto the runway and final approach path without being certain the landing traffic had indeed cleared the runway. I could also have advised ATC more quickly, although few moments had elapsed.
Original NASA ASRS Text
Title: AN ACFT EQUIP PROB ANTI-SKID LOCKUP CAUSED A TFC PROB.
Narrative: AFTER A NORMAL LNDG IN VFR CONDITIONS, DRY RWY, THE CAPT WAS APPLYING BRAKES AS ACFT SLOWED THROUGH ABOUT 90 KTS AT A POINT APPROX 4000 FT DOWN RWY. THERE WAS TFC ABOUT 3 1/2 MI OUT ON FINAL AND PIT TWR CLRED A JETSTREAM 31 COMMUTER ACFT INTO POS AND HOLD IN ANTICIPATION OF ALLOWING A TKOF AS WE EXITED THE RWY. AS ACFT SLOWED BELOW 60 KTS (RAPIDLY SLOWING), THE CAPT TURNED THE ACFT L TOWARD A REVERSE HIGH-SPD TURN OFF TO EXIT THE RWY. AT APPROX 20 KTS AND AFTER 45-50 FT OF TURNOFF, THE ACFT SLID STRAIGHT AHEAD TOWARD THE TXWY EDGE AND STOPPED WITH THE R WING OVERHANGING THE RWY. THE ANTI-SKID HAD LOCKED BOTH L MAIN WHEELS, SKIDDING THE ACFT. THE CAPT STOPPED STEERING INPUT VIA NOSEWHEEL AND STOPPED THE ACFT TO ANALYZE THE SIT. I IMMEDIATELY ADVISED ATC THAT WE HAD NOT CLRED THE RWY. ATC CANCELED THE TKOF CLRNC FOR THE COMMUTER AND SENT THE JET ON FINAL AROUND. I BELIEVE THERE WAS NO CONFLICT OR LOSS OF NORMAL SEPARATION. THIS WAS A MECHANICAL FAILURE AT AN UNEXPECTED TIME AND IN AN UNUSUAL MANNER, AS EVIDENCED BY THE SLOW SPD INVOLVED AND THE RARITY OF OCCURRENCE. AS FOR CORRECTIVE ACTION, ATC SHOULD NOT SO AGGRESSIVELY MOVE TFC ONTO THE RWY AND FINAL APCH PATH WITHOUT BEING CERTAIN THE LNDG TFC HAD INDEED CLRED THE RWY. I COULD ALSO HAVE ADVISED ATC MORE QUICKLY, ALTHOUGH FEW MOMENTS HAD ELAPSED.
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.