Aircraft equipment problem critical main wheel fell off on takeoff.

Attributes
ACN	309766
Time
Date	199507
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	SF 340A
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	landing other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 110 flight time total : 10500 flight time type : 4500
ASRS Report	309766
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : declared emergency none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

We took over aircraft from another crew. Aircraft was late arriving from dfw because of last min #4 tire change. Our takeoff appeared normal, except for momentary anti-skid caution, which is not uncommon on 'a' model saab 340. Within 10 mins after takeoff, our company in temple called us on radio and said observers witnessed a wheel fall off our plane on takeoff. We continued flight to our destination, dfw. After coordinating with our dispatcher and ATC, we did a low fly-by at dfw. It was confirmed by dfw tower and aircraft on ground that our #4 wheel (right outboard) was missing, however #3 wheel was there with normal 3 green and locked indications, we landed on runway 13L, dfw, uneventfully. As a precaution, emergency had been declared, crash fire rescue equipment was standing by. Ground evacuate/evacuation was planned, if needed. We were told, later, by company that the #4 tire change was performed incorrectly resulting in loss of wheel. Appears to be a mechanical quality-control problem.

Original NASA ASRS Text

Title: ACFT EQUIP PROB CRITICAL MAIN WHEEL FELL OFF ON TKOF.

Narrative: WE TOOK OVER ACFT FROM ANOTHER CREW. ACFT WAS LATE ARRIVING FROM DFW BECAUSE OF LAST MIN #4 TIRE CHANGE. OUR TKOF APPEARED NORMAL, EXCEPT FOR MOMENTARY ANTI-SKID CAUTION, WHICH IS NOT UNCOMMON ON 'A' MODEL SAAB 340. WITHIN 10 MINS AFTER TKOF, OUR COMPANY IN TEMPLE CALLED US ON RADIO AND SAID OBSERVERS WITNESSED A WHEEL FALL OFF OUR PLANE ON TKOF. WE CONTINUED FLT TO OUR DEST, DFW. AFTER COORDINATING WITH OUR DISPATCHER AND ATC, WE DID A LOW FLY-BY AT DFW. IT WAS CONFIRMED BY DFW TWR AND ACFT ON GND THAT OUR #4 WHEEL (R OUTBOARD) WAS MISSING, HOWEVER #3 WHEEL WAS THERE WITH NORMAL 3 GREEN AND LOCKED INDICATIONS, WE LANDED ON RWY 13L, DFW, UNEVENTFULLY. AS A PRECAUTION, EMER HAD BEEN DECLARED, CFR WAS STANDING BY. GND EVAC WAS PLANNED, IF NEEDED. WE WERE TOLD, LATER, BY COMPANY THAT THE #4 TIRE CHANGE WAS PERFORMED INCORRECTLY RESULTING IN LOSS OF WHEEL. APPEARS TO BE A MECHANICAL QUALITY-CTL PROB.

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.