<< >> NASA ASRS Report 457378, December 1999

A falcon 20 on landing the aircraft blew the right main landing gear tires due to glareshield mounted anti-skid control panel switch vibrating to 'off.'

Attributes
ACN	457378
Time
Date	199912
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : ads.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Weather Elements	Windshear
Light	Night
Aircraft 1
Operator	common carrier : charter
Make Model Name	Falcon 20FJF/20C/20D/20E/20F
Operating Under FAR Part	Part 135
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : charter
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 2400 flight time type : 1300
ASRS Report	457378
Person 2
Affiliation	company : charter
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

We landed an FA20 on runway 15. We selected brakes #1 with anti-skid and tested it on the before landing checklist. My copilot, who was flying, landed the plane harder than normal primarily due to the high winds and the crosswind component. Neither of these 2 exceeded the capacity of the airplane. After landing the brakes locked up on the right side which caused us to skid, then blow both the right tires. There was no runway incursion, nor a deviation by any other aircraft, nor a delay to any other aircraft. After the fact, we realized the brakes had slipped past the control gate and went into #2 without anti-skid. This may have caused the brakes to seize up when the pressure was applied by my copilot. The gate does not really prevent the brakes from automatically selecting #2 when the glareshield is hit relatively hard.

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Original NASA ASRS Text

Title: A FALCON 20 ON LNDG THE ACFT BLEW THE R MAIN LNDG GEAR TIRES DUE TO GLARESHIELD MOUNTED ANTI-SKID CTL PANEL SWITCH VIBRATING TO 'OFF.'

Narrative: WE LANDED AN FA20 ON RWY 15. WE SELECTED BRAKES #1 WITH ANTI-SKID AND TESTED IT ON THE BEFORE LNDG CHKLIST. MY COPLT, WHO WAS FLYING, LANDED THE PLANE HARDER THAN NORMAL PRIMARILY DUE TO THE HIGH WINDS AND THE XWIND COMPONENT. NEITHER OF THESE 2 EXCEEDED THE CAPACITY OF THE AIRPLANE. AFTER LNDG THE BRAKES LOCKED UP ON THE R SIDE WHICH CAUSED US TO SKID, THEN BLOW BOTH THE R TIRES. THERE WAS NO RWY INCURSION, NOR A DEV BY ANY OTHER ACFT, NOR A DELAY TO ANY OTHER ACFT. AFTER THE FACT, WE REALIZED THE BRAKES HAD SLIPPED PAST THE CTL GATE AND WENT INTO #2 WITHOUT ANTI-SKID. THIS MAY HAVE CAUSED THE BRAKES TO SEIZE UP WHEN THE PRESSURE WAS APPLIED BY MY COPLT. THE GATE DOES NOT REALLY PREVENT THE BRAKES FROM AUTOMATICALLY SELECTING #2 WHEN THE GLARESHIELD IS HIT RELATIVELY HARD.

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.