MD90 blows main gear tire on landing at sna due to antiskid failure.

Attributes
ACN	431106
Time
Date	199903
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sna.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-90 Series (DC-9-90) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 10200 flight time type : 600
ASRS Report	431106
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other controllera
Resolutory Action	controller : issued alert none taken : detected after the fact
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

While landing at sna, the left outboard main tire blew. The brake on that wheel was locked and at touchdown tire failure was immediate. We were unaware of the tire failure until tower advised us. We noticed no directional deviation tendency and felt only a minor vibration slowing through about 70 KTS. I was using autobrakes and braking action did not appear to be degraded. We taxied clear of the runway and stopped. The crash crew inspected the aircraft and found no damage other than the failed tire and damaged spray deflector. I decided to taxi to a parking area, very slowly. After we parked and shut down, the passenger were deplaned down the aft stairs, boarded busses and were taken to the terminal. Maintenance says the cause was a malfunctioning antiskid system. However, there were no cockpit indications of this. MD90 does not have antiskid release lights which might have prevented this incident.

Original NASA ASRS Text

Title: MD90 BLOWS MAIN GEAR TIRE ON LNDG AT SNA DUE TO ANTISKID FAILURE.

Narrative: WHILE LNDG AT SNA, THE L OUTBOARD MAIN TIRE BLEW. THE BRAKE ON THAT WHEEL WAS LOCKED AND AT TOUCHDOWN TIRE FAILURE WAS IMMEDIATE. WE WERE UNAWARE OF THE TIRE FAILURE UNTIL TWR ADVISED US. WE NOTICED NO DIRECTIONAL DEV TENDENCY AND FELT ONLY A MINOR VIBRATION SLOWING THROUGH ABOUT 70 KTS. I WAS USING AUTOBRAKES AND BRAKING ACTION DID NOT APPEAR TO BE DEGRADED. WE TAXIED CLR OF THE RWY AND STOPPED. THE CRASH CREW INSPECTED THE ACFT AND FOUND NO DAMAGE OTHER THAN THE FAILED TIRE AND DAMAGED SPRAY DEFLECTOR. I DECIDED TO TAXI TO A PARKING AREA, VERY SLOWLY. AFTER WE PARKED AND SHUT DOWN, THE PAX WERE DEPLANED DOWN THE AFT STAIRS, BOARDED BUSSES AND WERE TAKEN TO THE TERMINAL. MAINT SAYS THE CAUSE WAS A MALFUNCTIONING ANTISKID SYS. HOWEVER, THERE WERE NO COCKPIT INDICATIONS OF THIS. MD90 DOES NOT HAVE ANTISKID RELEASE LIGHTS WHICH MIGHT HAVE PREVENTED THIS INCIDENT.

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.