<< >> NASA ASRS Report 704636, July 2006

During preflight a B757-200 crew entered waypoint KD54U instead of KD45U. ATC observed aircraft flying to KD54U; cleared them direct KD54U and then to their next fix.

Attributes
ACN	704636
Time
Date	200607
Place
Altitude	msl single value : 40000
Aircraft 1
Controlling Facilities	artcc : zab.artcc
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	704636
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	704606
Events
Anomaly	non adherence : clearance non adherence : far other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance Chart Or Publication
Primary Problem	Flight Crew Human Performance

Narrative:

Navigation error due to transposition of digits. During preflight manually loaded route including waypoint KD45U incorrectly entered as KD54U. Route was checked by both first officer and captain; compared FMS to flight plan and flight plan to pre departure clearance. Error was not detected until en route when ZAB controller inquired about our deviation from route. He requested we confirm we were going to KD45U. We replied that we were going to KD54U. Nothing further was said about it. Next controller confirmed our clearance now stated direct KD54U and then next waypoint. KD45U and KD54U are geographically close so course line and distance all seemed reasonable during preflight checks and en route.

Related reports:

• DO328 crew omits a waypoint during preflight programming of ...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: DURING PREFLT A B757-200 CREW ENTERED WAYPOINT KD54U INSTEAD OF KD45U. ATC OBSERVED ACFT FLYING TO KD54U; CLRED THEM DIRECT KD54U AND THEN TO THEIR NEXT FIX.

Narrative: NAVIGATION ERROR DUE TO TRANSPOSITION OF DIGITS. DURING PREFLT MANUALLY LOADED RTE INCLUDING WAYPOINT KD45U INCORRECTLY ENTERED AS KD54U. RTE WAS CHKED BY BOTH FO AND CAPT; COMPARED FMS TO FLT PLAN AND FLT PLAN TO PDC. ERROR WAS NOT DETECTED UNTIL ENRTE WHEN ZAB CTLR INQUIRED ABOUT OUR DEV FROM RTE. HE REQUESTED WE CONFIRM WE WERE GOING TO KD45U. WE REPLIED THAT WE WERE GOING TO KD54U. NOTHING FURTHER WAS SAID ABOUT IT. NEXT CTLR CONFIRMED OUR CLRNC NOW STATED DIRECT KD54U AND THEN NEXT WAYPOINT. KD45U AND KD54U ARE GEOGRAPHICALLY CLOSE SO COURSE LINE AND DISTANCE ALL SEEMED REASONABLE DURING PREFLT CHKS AND ENRTE.

Data retrieved from NASA's ASRS site as of January 2009 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.