Air carrier turns onto taxiway not shown on chart.

Attributes
ACN	186247
Time
Date	199108
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ilm
State Reference	NC
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	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : flight engineer pilot : cfi pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 5500 flight time type : 100
ASRS Report	186247
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course none taken : unable
Consequence	faa : reviewed incident with flight crew
Supplementary
Air Traffic Incident	other

Narrative:

Taxiing from gate to runway 23, thought we were on taxiway F. Controller told us we were on a 'non movement area.' we were on a taxiway not depicted on chart 11-1 for ilm. The taxiway in use appeared to be a normal, usable taxiway. It was also the most northerly taxiway on the ramp, which as depicted on chart 11-1 as taxiway F. Callback conversation with reporter revealed the following information: reporter states that they were cleared to taxi 'F to a to G for runway 23'. Leaving the gate they took the first taxiway they saw believing it to be 'F' since there is no other taxiway shown. Captain was taxiing and reporter was not xchking because on the diagram it appeared pretty simple. It appears the unidented taxiway may go to the building indicated west of the tower.

Original NASA ASRS Text

Title: ACR TURNS ONTO TAXIWAY NOT SHOWN ON CHART.

Narrative: TAXIING FROM GATE TO RWY 23, THOUGHT WE WERE ON TAXIWAY F. CTLR TOLD US WE WERE ON A 'NON MOVEMENT AREA.' WE WERE ON A TAXIWAY NOT DEPICTED ON CHART 11-1 FOR ILM. THE TAXIWAY IN USE APPEARED TO BE A NORMAL, USABLE TAXIWAY. IT WAS ALSO THE MOST NORTHERLY TAXIWAY ON THE RAMP, WHICH AS DEPICTED ON CHART 11-1 AS TAXIWAY F. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT THEY WERE CLRED TO TAXI 'F TO A TO G FOR RWY 23'. LEAVING THE GATE THEY TOOK THE FIRST TAXIWAY THEY SAW BELIEVING IT TO BE 'F' SINCE THERE IS NO OTHER TAXIWAY SHOWN. CAPT WAS TAXIING AND RPTR WAS NOT XCHKING BECAUSE ON THE DIAGRAM IT APPEARED PRETTY SIMPLE. IT APPEARS THE UNIDENTED TAXIWAY MAY GO TO THE BUILDING INDICATED W OF THE TWR.

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.