Narrative:

I was on an initial operating experience ride as a transitioning captain when we experienced a mechanical failure on landing in mgm. We made a normal landing and T/D unaware of any problem when tower advised us that we had smoke coming from our left gear. We were not alarmed because this is not all that unusual with new brakes or hot brakes. We exited the runway and tower said that there was a lot of smoke coming from our left gear. We then became a little more concerned and decided to pull over and stop, which we did. The emergency equipment came out to investigate. They determined we had hydraulic fluid pouring from our left gear onto the brake, causing the smoke. We also had a flat spot on the left inboard tire. We elected to exit the passenger out the aft stairs and across the ramp. After the smoke dissipated somewhat, we taxied to the ramp because the leak appeared to have stopped. At the gate, fluid was coming from the gear, even thought the system was not pressurized. I checked with our maintenance department the following day and they advised me that the left brake had blown a seal causing the leak and possibly causing the left inboard tire to momentarily lockup, thus explaining the flat spot.

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Original NASA ASRS Text

Title: ACR MLG LNDG AT MGM EXPERIENCES FAILURE OF HYDRAULIC BRAKE LINE SEAL, WHICH LEAKED FLUID ON HOT BRAKE PRODUCING SMOKE.

Narrative: I WAS ON AN INITIAL OPERATING EXPERIENCE RIDE AS A TRANSITIONING CAPT WHEN WE EXPERIENCED A MECHANICAL FAILURE ON LNDG IN MGM. WE MADE A NORMAL LNDG AND T/D UNAWARE OF ANY PROB WHEN TWR ADVISED US THAT WE HAD SMOKE COMING FROM OUR LEFT GEAR. WE WERE NOT ALARMED BECAUSE THIS IS NOT ALL THAT UNUSUAL WITH NEW BRAKES OR HOT BRAKES. WE EXITED THE RWY AND TWR SAID THAT THERE WAS A LOT OF SMOKE COMING FROM OUR LEFT GEAR. WE THEN BECAME A LITTLE MORE CONCERNED AND DECIDED TO PULL OVER AND STOP, WHICH WE DID. THE EMER EQUIP CAME OUT TO INVESTIGATE. THEY DETERMINED WE HAD HYD FLUID POURING FROM OUR LEFT GEAR ONTO THE BRAKE, CAUSING THE SMOKE. WE ALSO HAD A FLAT SPOT ON THE LEFT INBOARD TIRE. WE ELECTED TO EXIT THE PAX OUT THE AFT STAIRS AND ACROSS THE RAMP. AFTER THE SMOKE DISSIPATED SOMEWHAT, WE TAXIED TO THE RAMP BECAUSE THE LEAK APPEARED TO HAVE STOPPED. AT THE GATE, FLUID WAS COMING FROM THE GEAR, EVEN THOUGHT THE SYS WAS NOT PRESSURIZED. I CHKED WITH OUR MAINT DEPT THE FOLLOWING DAY AND THEY ADVISED ME THAT THE LEFT BRAKE HAD BLOWN A SEAL CAUSING THE LEAK AND POSSIBLY CAUSING THE LEFT INBOARD TIRE TO MOMENTARILY LOCKUP, THUS EXPLAINING THE FLAT SPOT.

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.