Lost right gear #4 tire and wheel assembly on landing.

Attributes
ACN	221684
Time
Date	199209
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sba
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 191 flight time total : 7860 flight time type : 191
ASRS Report	221684
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Landed runway 07 sba. Smooth touchdown and rollout. At 90 KTS captain applied brakes, a thump was heard in the cockpit and the outboard antiskid inoperative light illuminated. We taxied to the gate and shut down. We then learned that the #4 tire (right gear outboard) and the wheel assembly were missing from the aircraft. I called ground so they could clear the debris from the runway. They found the brake assembly that night but the tire was not recovered until morning -- on the side of the runway. The main axle between the 2 main gear tires broke in 1/2 during normal brake application. This was out sixth leg of the day, our fifth in this aircraft. We thought as we taxied in that maybe we had blown a tire. Maintenance said this airplane had an overweight landing 3 days before, but only 1000 pounds over maximum landing weight. There was no evidence of any hidden stress cracks around the axle pieces that were recovered. We believe all parts were found. At time of landing we were 4600 pounds plus under maximum landing weight flaps 25 degree calm winds and VFR. No other damage was done to the aircraft, passenger or crew.

Original NASA ASRS Text

Title: LOST R GEAR #4 TIRE AND WHEEL ASSEMBLY ON LNDG.

Narrative: LANDED RWY 07 SBA. SMOOTH TOUCHDOWN AND ROLLOUT. AT 90 KTS CAPT APPLIED BRAKES, A THUMP WAS HEARD IN THE COCKPIT AND THE OUTBOARD ANTISKID INOP LIGHT ILLUMINATED. WE TAXIED TO THE GATE AND SHUT DOWN. WE THEN LEARNED THAT THE #4 TIRE (R GEAR OUTBOARD) AND THE WHEEL ASSEMBLY WERE MISSING FROM THE ACFT. I CALLED GND SO THEY COULD CLR THE DEBRIS FROM THE RWY. THEY FOUND THE BRAKE ASSEMBLY THAT NIGHT BUT THE TIRE WAS NOT RECOVERED UNTIL MORNING -- ON THE SIDE OF THE RWY. THE MAIN AXLE BTWN THE 2 MAIN GEAR TIRES BROKE IN 1/2 DURING NORMAL BRAKE APPLICATION. THIS WAS OUT SIXTH LEG OF THE DAY, OUR FIFTH IN THIS ACFT. WE THOUGHT AS WE TAXIED IN THAT MAYBE WE HAD BLOWN A TIRE. MAINT SAID THIS AIRPLANE HAD AN OVERWT LNDG 3 DAYS BEFORE, BUT ONLY 1000 POUNDS OVER MAX LNDG WT. THERE WAS NO EVIDENCE OF ANY HIDDEN STRESS CRACKS AROUND THE AXLE PIECES THAT WERE RECOVERED. WE BELIEVE ALL PARTS WERE FOUND. AT TIME OF LNDG WE WERE 4600 POUNDS PLUS UNDER MAX LNDG WT FLAPS 25 DEG CALM WINDS AND VFR. NO OTHER DAMAGE WAS DONE TO THE ACFT, PAX OR CREW.

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.