While in cruise, large transport flight crew misreads chart, takes wrong airway.

Attributes
ACN	129611
Time
Date	198912
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : dbq
State Reference	IA
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute airway : j84
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 250 flight time total : 7100 flight time type : 5500
ASRS Report	129611
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 200
ASRS Report	129612
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cruising at FL350, flight plan clearance read J94, pullman to O'neill. Over dubuque, misread high altitude chart in dim light and flew J84 outbound from dbq instead of J94. ZMP questioned route of flight. Discovered error and received clearance of J84 to obh. Normal filed flight plan for this trip (dtw direct den) is dbq, J84, to obh. This probably contributed to error.

Original NASA ASRS Text

Title: WHILE IN CRUISE, LGT FLT CREW MISREADS CHART, TAKES WRONG AIRWAY.

Narrative: CRUISING AT FL350, FLT PLAN CLRNC READ J94, PULLMAN TO O'NEILL. OVER DUBUQUE, MISREAD HIGH ALT CHART IN DIM LIGHT AND FLEW J84 OUTBOUND FROM DBQ INSTEAD OF J94. ZMP QUESTIONED ROUTE OF FLT. DISCOVERED ERROR AND RECEIVED CLRNC OF J84 TO OBH. NORMAL FILED FLT PLAN FOR THIS TRIP (DTW DIRECT DEN) IS DBQ, J84, TO OBH. THIS PROBABLY CONTRIBUTED TO ERROR.

Data retrieved from NASA's ASRS site as of August 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.