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Flight crew of B737 fear brakes are frozen until informed that there is a known surface depression on the east side of taxiway delta at the approach end of runway 19L.
| Attributes | |
| ACN | 628653 |
| Time | |
| Date | 200408 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : las.airport |
| State Reference | NV |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| ASRS Report | 628653 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | ground encounters other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued advisory flight crew : exited adverse environment |
| Supplementary | |
| Problem Areas | Airport FAA |
| Primary Problem | Airport |
| Situations | |
| Airport | taxiway surface condition : las.airport |
Narrative:
We were holding short of runway 19L at las. The tower cleared us into position and hold runway 19L. Captain added power to taxi and the plane would not move. We thought the brakes may have froze, as they were hot during walk around. The brakes were checked by maintenance in las. We told the tower we may have a problem, the possibility of the brakes. They stated there was a large dip in our location they were aware of. We discussed the situation and captain decided to try again. He needed a large amount of power to get moving. The local airport should mention to all air carrier aircraft of the hazard as well as advising the crews to hold some distance away. Additionally, they could highlight the area with some type of paint until repairs are made. Callback conversation with reporter revealed the following information: reporter advised the location of the depressed area is on the east side of runway 19L on taxiway delta. He stated it required more than 50% N1 to exit the area. Easily enough thrust to do damage to aircraft or vehicles behind them.
Original NASA ASRS Text
Title: FLT CREW OF B737 FEAR BRAKES ARE FROZEN UNTIL INFORMED THAT THERE IS A KNOWN SURFACE DEPRESSION ON THE E SIDE OF TXWY DELTA AT THE APCH END OF RWY 19L.
Narrative: WE WERE HOLDING SHORT OF RWY 19L AT LAS. THE TWR CLRED US INTO POSITION AND HOLD RWY 19L. CAPT ADDED POWER TO TAXI AND THE PLANE WOULD NOT MOVE. WE THOUGHT THE BRAKES MAY HAVE FROZE, AS THEY WERE HOT DURING WALK AROUND. THE BRAKES WERE CHECKED BY MAINT IN LAS. WE TOLD THE TWR WE MAY HAVE A PROB, THE POSSIBILITY OF THE BRAKES. THEY STATED THERE WAS A LARGE DIP IN OUR LOCATION THEY WERE AWARE OF. WE DISCUSSED THE SIT AND CAPT DECIDED TO TRY AGAIN. HE NEEDED A LARGE AMOUNT OF POWER TO GET MOVING. THE LOCAL ARPT SHOULD MENTION TO ALL AIR CARRIER ACFT OF THE HAZARD AS WELL AS ADVISING THE CREWS TO HOLD SOME DISTANCE AWAY. ADDITIONALLY, THEY COULD HIGHLIGHT THE AREA WITH SOME TYPE OF PAINT UNTIL REPAIRS ARE MADE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADVISED THE LOCATION OF THE DEPRESSED AREA IS ON THE E SIDE OF RWY 19L ON TXWY DELTA. HE STATED IT REQUIRED MORE THAN 50% N1 TO EXIT THE AREA. EASILY ENOUGH THRUST TO DO DAMAGE TO ACFT OR VEHICLES BEHIND THEM.
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.