Aircraft equipment problem caused a closed runway.

Attributes
ACN	213955
Time
Date	199206
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 125 flight time total : 2500
ASRS Report	213955
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I departed the gate at AM05 for a flight to congotown, bahamas. I was issued instructions to taxi to runway 27L and was sequenced to follow an air carrier medium large transport. After switching to tower, I was advised to taxi around air carrier and into position on 27L. As I taxied onto the runway and was turning to line up, the airplane shuddered and stopped. The aircraft would not move. I informed tower that we were stuck and would require assistance. I also informed company. An aircraft behind us informed me that the left main wheel was twisted 90 degrees. I then shut down the engines and waited for assistance. Upon inspecting the gear, it appeared the scissors bolt had fallen out and the scissors released. I found the bolt, washers, nut, and bushing near the aircraft (I could not find the cotter pin for the bolt!). Maintenance arrived, got the gear re-connected and we taxied back to the hangar. Damage was limited to the brake disk and the runway was only closed for about 45 mins.

Original NASA ASRS Text

Title: ACFT EQUIP PROBLEM CAUSED A CLOSED RWY.

Narrative: I DEPARTED THE GATE AT AM05 FOR A FLT TO CONGOTOWN, BAHAMAS. I WAS ISSUED INSTRUCTIONS TO TAXI TO RWY 27L AND WAS SEQUENCED TO FOLLOW AN ACR MLG. AFTER SWITCHING TO TWR, I WAS ADVISED TO TAXI AROUND ACR AND INTO POS ON 27L. AS I TAXIED ONTO THE RWY AND WAS TURNING TO LINE UP, THE AIRPLANE SHUDDERED AND STOPPED. THE ACFT WOULD NOT MOVE. I INFORMED TWR THAT WE WERE STUCK AND WOULD REQUIRE ASSISTANCE. I ALSO INFORMED COMPANY. AN ACFT BEHIND US INFORMED ME THAT THE L MAIN WHEEL WAS TWISTED 90 DEGS. I THEN SHUT DOWN THE ENGS AND WAITED FOR ASSISTANCE. UPON INSPECTING THE GEAR, IT APPEARED THE SCISSORS BOLT HAD FALLEN OUT AND THE SCISSORS RELEASED. I FOUND THE BOLT, WASHERS, NUT, AND BUSHING NEAR THE ACFT (I COULD NOT FIND THE COTTER PIN FOR THE BOLT!). MAINT ARRIVED, GOT THE GEAR RE-CONNECTED AND WE TAXIED BACK TO THE HANGAR. DAMAGE WAS LIMITED TO THE BRAKE DISK AND THE RWY WAS ONLY CLOSED FOR ABOUT 45 MINS.

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.