B777 charter taxies off of taxiway at intersection of B4 and taxiway B when departing ramp at spi.

Attributes
ACN	622361
Time
Date	200407
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : spi.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Experience	flight time last 90 days : 103 flight time total : 12789 flight time type : 3930
ASRS Report	622361
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	excursion : taxiway other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact other
Consequence	faa : reviewed incident with flight crew other other Other
Supplementary
Problem Areas	Company Flight Crew Human Performance Aircraft Airport
Primary Problem	Company
Air Traffic Incident	Pilot Deviation

Narrative:

Military charter into spi, neither of us had been there before. Landed on runway 22 then taxied to ramp via taxiway a, then made slight right turn on taxiway B, then entered ramp at taxiway D. Were guided to parking by ramp personnel parking on terminal ramp facing southeast. When finished loading, were cleared to taxi to runway 22. There was a fence in front of us so only exit was right turn on B4 then another right on taxiway B. While on B4 we noticed that taxiway B got very narrow there. I said to captain 'I don't think we can make it.' captain then stopped aircraft. Taxiway B was only way out. We decided if we made a very careful turn we could make it. So we made the turn and right main gear hit taxiway light then went into grass. We continued taxi back onto concrete and stopped there on taxiway B and shut down. Onboard mechanics went down and inspected gear and found it to be undamaged. So, upon coordination with air carrier, maintenance control and manager, the mechanics cleaned the gear then signed off logbook and we continued to destination.

Original NASA ASRS Text

Title: B777 CHARTER TAXIES OFF OF TXWY AT INTXN OF B4 AND TXWY B WHEN DEPARTING RAMP AT SPI.

Narrative: MIL CHARTER INTO SPI, NEITHER OF US HAD BEEN THERE BEFORE. LANDED ON RWY 22 THEN TAXIED TO RAMP VIA TXWY A, THEN MADE SLIGHT R TURN ON TXWY B, THEN ENTERED RAMP AT TXWY D. WERE GUIDED TO PARKING BY RAMP PERSONNEL PARKING ON TERMINAL RAMP FACING SE. WHEN FINISHED LOADING, WERE CLRED TO TAXI TO RWY 22. THERE WAS A FENCE IN FRONT OF US SO ONLY EXIT WAS R TURN ON B4 THEN ANOTHER R ON TXWY B. WHILE ON B4 WE NOTICED THAT TXWY B GOT VERY NARROW THERE. I SAID TO CAPT 'I DON'T THINK WE CAN MAKE IT.' CAPT THEN STOPPED ACFT. TXWY B WAS ONLY WAY OUT. WE DECIDED IF WE MADE A VERY CAREFUL TURN WE COULD MAKE IT. SO WE MADE THE TURN AND R MAIN GEAR HIT TXWY LIGHT THEN WENT INTO GRASS. WE CONTINUED TAXI BACK ONTO CONCRETE AND STOPPED THERE ON TXWY B AND SHUT DOWN. ONBOARD MECHS WENT DOWN AND INSPECTED GEAR AND FOUND IT TO BE UNDAMAGED. SO, UPON COORD WITH ACR, MAINT CTL AND MGR, THE MECHS CLEANED THE GEAR THEN SIGNED OFF LOGBOOK AND WE CONTINUED TO DEST.

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.