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2 runways blocked at dca when B737-400 suffers a failure of its nosewheel torque link on the landing procedure rollout.
| Attributes | |
| ACN | 346886 |
| Time | |
| Date | 199609 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dca |
| State Reference | DC |
| 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 | B737-400 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | landing other other |
| 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 : 200 flight time total : 13900 flight time type : 3500 |
| ASRS Report | 346886 |
| 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 |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable |
| Consequence | other Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
A normal VMC landing to runway 36 at dca. PF was first officer. Confign: flaps 40 degrees, autobrake set at '2' setting. Approximately 4-5 seconds after nosewheel touchdown, a wheel shimmy/shaking began that rapidly became more and more severe as aircraft slowed. Speed just under 100 KTS when it began. Captain assumed control from first officer when speed less than 60 KTS. At very end of landing roll, captain's tiller could not steer aircraft, and it came to a stop at intersection of runway 36 and runway 33. Aircraft not quite clear of runway 36. Runway was closed for 15-20 mins until we were towed off. Touchdown was normal, not hard. Braking was normal. Aircraft was towed to parking, passenger deplaned, no injuries. No other abnormalities were noted and no emergency was declared. Nosewheel torque link had failed/sheared from bottom of nose strut. Left front tire blown out, right nose gear cut, but remained inflated. Foreign object damage from torque link broke TCASII antenna, and also damaged right side engine, breaking fan blades and putting numerous holes in inside of engine cowling. No damage to core section was noted.
Original NASA ASRS Text
Title: 2 RWYS BLOCKED AT DCA WHEN B737-400 SUFFERS A FAILURE OF ITS NOSEWHEEL TORQUE LINK ON THE LNDG PROC ROLLOUT.
Narrative: A NORMAL VMC LNDG TO RWY 36 AT DCA. PF WAS FO. CONFIGN: FLAPS 40 DEGS, AUTOBRAKE SET AT '2' SETTING. APPROX 4-5 SECONDS AFTER NOSEWHEEL TOUCHDOWN, A WHEEL SHIMMY/SHAKING BEGAN THAT RAPIDLY BECAME MORE AND MORE SEVERE AS ACFT SLOWED. SPD JUST UNDER 100 KTS WHEN IT BEGAN. CAPT ASSUMED CTL FROM FO WHEN SPD LESS THAN 60 KTS. AT VERY END OF LNDG ROLL, CAPT'S TILLER COULD NOT STEER ACFT, AND IT CAME TO A STOP AT INTXN OF RWY 36 AND RWY 33. ACFT NOT QUITE CLR OF RWY 36. RWY WAS CLOSED FOR 15-20 MINS UNTIL WE WERE TOWED OFF. TOUCHDOWN WAS NORMAL, NOT HARD. BRAKING WAS NORMAL. ACFT WAS TOWED TO PARKING, PAX DEPLANED, NO INJURIES. NO OTHER ABNORMALITIES WERE NOTED AND NO EMER WAS DECLARED. NOSEWHEEL TORQUE LINK HAD FAILED/SHEARED FROM BOTTOM OF NOSE STRUT. L FRONT TIRE BLOWN OUT, R NOSE GEAR CUT, BUT REMAINED INFLATED. FOREIGN OBJECT DAMAGE FROM TORQUE LINK BROKE TCASII ANTENNA, AND ALSO DAMAGED R SIDE ENG, BREAKING FAN BLADES AND PUTTING NUMEROUS HOLES IN INSIDE OF ENG COWLING. NO DAMAGE TO CORE SECTION WAS NOTED.
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.