 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B737-300 crew, during landing roll at ord, experienced poor to nil braking, resulting in an uncomfortable, higher than normal speed, turn at runways end.
| Attributes | |
| ACN | 562286 |
| Time | |
| Date | 200210 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | agl single value : 0 |
| Environment | |
| Weather Elements | other |
| Aircraft 1 | |
| Controlling Facilities | tower : ord.tower tower : mli.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : ord.tower |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time type : 727 |
| ASRS Report | 562286 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time type : 483 |
| ASRS Report | 562290 |
| Events | |
| Anomaly | inflight encounter : weather non adherence : company policies non adherence : published procedure non adherence other other anomaly other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : regained aircraft control |
| Consequence | other |
| Supplementary | |
| Problem Areas | Weather Environmental Factor Flight Crew Human Performance ATC Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Landing approach ord runway 4R in light rain/drizzle. Stabilized approach and normal landing. Captain landing. During braking, tower instructed to roll to end and expedite. I normally would have braked more aggressively but I tried to oblige the tower's instruction. In the last 1000 ft of runway 4R, I applied greater brake pressure but the braking action was poor to intermittently nil. I applied maximum braking as we approached the end lights. The final turnoff is a 90 degree left turn and we successfully made the turn but at a higher rate of speed than felt comfortable. During the final 1000 ft or so, the brakes released several times. I believe the poor braking action was possibly due to rubber deposits on runway 4R, runway markings and rain. Supplemental information from acn 562290: on final approach to runway 4R ord, tower controller instructed us to roll to end. Captain was PF. Approach was stabilized, touchdown, reversing, and initial rollout were normal. During the rollout, the tower said to 'expedite to the end,' as traffic was on a ?? Mi short final, which we tried to do. At about 1500 ft from the end, the captain increased braking. We realized that braking was poor to intermittently nil. It was my impression that the ground speed of the aircraft actually increased. The brakes released several times in the last 1500 ft. The turnoff at the end is an approximately 90 degree left turn. The turn was successfully executed at a higher speed than normal and felt quite uncomfortable.
Original NASA ASRS Text
Title: A B737-300 CREW, DURING LNDG ROLL AT ORD, EXPERIENCED POOR TO NIL BRAKING, RESULTING IN AN UNCOMFORTABLE, HIGHER THAN NORMAL SPD, TURN AT RWYS END.
Narrative: LNDG APCH ORD RWY 4R IN LIGHT RAIN/DRIZZLE. STABILIZED APCH AND NORMAL LNDG. CAPT LNDG. DURING BRAKING, TWR INSTRUCTED TO ROLL TO END AND EXPEDITE. I NORMALLY WOULD HAVE BRAKED MORE AGGRESSIVELY BUT I TRIED TO OBLIGE THE TWR'S INSTRUCTION. IN THE LAST 1000 FT OF RWY 4R, I APPLIED GREATER BRAKE PRESSURE BUT THE BRAKING ACTION WAS POOR TO INTERMITTENTLY NIL. I APPLIED MAX BRAKING AS WE APCHED THE END LIGHTS. THE FINAL TURNOFF IS A 90 DEG L TURN AND WE SUCCESSFULLY MADE THE TURN BUT AT A HIGHER RATE OF SPD THAN FELT COMFORTABLE. DURING THE FINAL 1000 FT OR SO, THE BRAKES RELEASED SEVERAL TIMES. I BELIEVE THE POOR BRAKING ACTION WAS POSSIBLY DUE TO RUBBER DEPOSITS ON RWY 4R, RWY MARKINGS AND RAIN. SUPPLEMENTAL INFO FROM ACN 562290: ON FINAL APCH TO RWY 4R ORD, TWR CTLR INSTRUCTED US TO ROLL TO END. CAPT WAS PF. APCH WAS STABILIZED, TOUCHDOWN, REVERSING, AND INITIAL ROLLOUT WERE NORMAL. DURING THE ROLLOUT, THE TWR SAID TO 'EXPEDITE TO THE END,' AS TFC WAS ON A ?? MI SHORT FINAL, WHICH WE TRIED TO DO. AT ABOUT 1500 FT FROM THE END, THE CAPT INCREASED BRAKING. WE REALIZED THAT BRAKING WAS POOR TO INTERMITTENTLY NIL. IT WAS MY IMPRESSION THAT THE GND SPD OF THE ACFT ACTUALLY INCREASED. THE BRAKES RELEASED SEVERAL TIMES IN THE LAST 1500 FT. THE TURNOFF AT THE END IS AN APPROX 90 DEG L TURN. THE TURN WAS SUCCESSFULLY EXECUTED AT A HIGHER SPD THAN NORMAL AND FELT QUITE UNCOMFORTABLE.
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.