An air carrier crew reported that the L451 airway waypoint oldey is listed at the top of latin ameri...

Narrative:

While enroute; we received a re-route clearance due to airway closures; because of severe weather in the caribbean area. The revised routing was to proceed to fix 'leton' and then airway L451 to 'oldey'. We were immediately busy in the cockpit trying to facilitate this re-route and getting the appropriate enroute chart to verify the waypoints. Our navigation system does not have an airway data base; requiring us to manually enter each waypoint of the route. When I initially reviewed the enroute chart we [were] using; I saw the waypoint 'oldey' at the very top of the chart (in the border margin) and made the assumption that this was our next enroute fix on airway L451; before getting out the next adjoining enroute chart. But what I did not immediately notice (due to the low light in the cockpit) was that to the left of the depicted fix 'oldey' was also printed the fix 'ilido'. It was very deceiving and easy to miss; and I did not notice my error in time to notice that the fix prior to oldey should have been ilido. ATC contacted us approximately 10 minutes after our re-route and inquired about our current latitude/long position. We were off-shore; and normal position reporting was in progress; I believe because we were not yet in a radar environment. ATC then cleared us direct to ilido; which represented an approximate 5 degree heading change. I am not certain how far we were actually displaced from the airway. Note: the commercial chart's latin america 7/8 enroute chart; which depicts the fixes oldey and ilido on its northern most chart border can be very misleading. The fix ilido which represents the continuation of airway L451 is not well defined on that section of the chart; and my error during our expedient attempt to comply with our re-route; was in not having the next overlapping enroute chart readily available; which would have prevented this error. In the future; I will not accept a full re-route clearance or enter en route waypoints into our navigation system; before being certain of entering the correct fixes that define the route.

Original NASA ASRS Text

Title: An Air Carrier crew reported that the L451 airway waypoint OLDEY is listed at the top of Latin America Chart 7 after LETON but Latin America Chart 5 indicates two additional waypoints on L451 before OLDEY after LETON.

Narrative: While enroute; we received a re-route clearance due to airway closures; because of severe weather in the Caribbean Area. The revised routing was to proceed to fix 'LETON' and then Airway L451 to 'OLDEY'. We were immediately busy in the cockpit trying to facilitate this re-route and getting the appropriate enroute chart to verify the waypoints. Our NAV system does not have an Airway Data Base; requiring us to manually enter each waypoint of the route. When I initially reviewed the enroute chart we [were] using; I saw the waypoint 'OLDEY' at the very top of the chart (in the border margin) and made the assumption that this was our next enroute fix on airway L451; before getting out the next adjoining enroute chart. But what I did not immediately notice (due to the low light in the cockpit) was that to the left of the depicted fix 'OLDEY' was also printed the fix 'ILIDO'. It was very deceiving and easy to miss; and I did not notice my error in time to notice that the fix prior to OLDEY should have been ILIDO. ATC contacted us approximately 10 minutes after our re-route and inquired about our current LAT/LONG position. We were off-shore; and normal position reporting was in progress; I believe because we were not yet in a radar environment. ATC then cleared us direct to ILIDO; which represented an approximate 5 degree heading change. I am not certain how far we were actually displaced from the airway. Note: The Commercial Chart's Latin America 7/8 enroute chart; which depicts the fixes OLDEY and ILIDO on its northern most chart border can be very misleading. The fix ILIDO which represents the continuation of Airway L451 is not well defined on that section of the chart; and my error during our expedient attempt to comply with our re-route; was in not having the next overlapping enroute chart readily available; which would have prevented this error. In the future; I will not accept a full re-route clearance or enter en route waypoints into our NAV system; before being certain of entering the correct fixes that define the route.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	903749
Time
Date	201008
Local Time Of Day	1801-2400
Place
Locale Reference	ZNY.ARTCC
State Reference	NY
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Make Model Name	Widebody Transport
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Airway L451
Flight Plan	IFR
Component
Aircraft Component	GPS & Other Satellite Navigation
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 120 Flight Crew Total 6500 Flight Crew Type 2000
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 98 Flight Crew Total 19600 Flight Crew Type 5200
Events
Anomaly	Deviation - Procedural Clearance Deviation - Track / Heading All Types

An air carrier crew reported that the L451 airway waypoint oldey is listed at the top of latin america chart 7 after leton but latin america chart 5 indicates two additional waypoints on L451 before oldey after leton.