B737-400 flies 30 mi off course because wrong departure coords were entered into the FMS.

Attributes
ACN	339602
Time
Date	199606
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stx
State Reference	VI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hef
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 210 flight time total : 13000 flight time type : 3500
ASRS Report	339602
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 210 flight time total : 10000 flight time type : 5000
ASRS Report	339752
Events
Anomaly	non adherence : clearance non adherence : far other spatial deviation
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While programming FMC for flight from stx (tisx) to bwi, tist (stt) was inadvertently entered as departure station. Since it is 40 mi away from stx (tisx), we ended up approximately 30 mi south of course by the time ZDC picked us up on radar, south of egc. Note flight inbound had come from tist (stt). Supplemental information from acn 339752: controller noticed error (29 NM south of course) when radar contact was established east of elizabeth city, nc. Gross error checks made subsequently checked ok.

Original NASA ASRS Text

Title: B737-400 FLIES 30 MI OFF COURSE BECAUSE WRONG DEP COORDS WERE ENTERED INTO THE FMS.

Narrative: WHILE PROGRAMMING FMC FOR FLT FROM STX (TISX) TO BWI, TIST (STT) WAS INADVERTENTLY ENTERED AS DEP STATION. SINCE IT IS 40 MI AWAY FROM STX (TISX), WE ENDED UP APPROX 30 MI S OF COURSE BY THE TIME ZDC PICKED US UP ON RADAR, S OF EGC. NOTE FLT INBOUND HAD COME FROM TIST (STT). SUPPLEMENTAL INFO FROM ACN 339752: CTLR NOTICED ERROR (29 NM S OF COURSE) WHEN RADAR CONTACT WAS ESTABLISHED E OF ELIZABETH CITY, NC. GROSS ERROR CHKS MADE SUBSEQUENTLY CHKED OK.

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.