Faulty entry of a waypoint causes small transport to miss altitude crossing restriction at wever.

Attributes
ACN	242425
Time
Date	199305
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mia
State Reference	FL
Altitude	msl bound lower : 8000 msl bound upper : 23000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma tower : iad
Operator	general aviation : personal
Make Model Name	Small Transport
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 1300 flight time type : 25
ASRS Report	242425
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Was given clearance of 'after reaching FL230, cross wever intersection at and maintain 8000 ft.' I entered wever intersection on the LORAN flight plan, but inadvertently after famin intersection, which was already my next waypoint, though further away. The time to wever intersection was calculated for going beyond it to famin, then back to wever. I used this time to calculate my start descent time. By that time I realized I was too close to get down in time. I wasted valuable time trying to figure out why my DME told me I was almost to wever intersection when the LORAN said I had mi to go. Should have crosschecked sooner.

Original NASA ASRS Text

Title: FAULTY ENTRY OF A WAYPOINT CAUSES SMT TO MISS ALT XING RESTRICTION AT WEVER.

Narrative: WAS GIVEN CLRNC OF 'AFTER REACHING FL230, CROSS WEVER INTXN AT AND MAINTAIN 8000 FT.' I ENTERED WEVER INTXN ON THE LORAN FLT PLAN, BUT INADVERTENTLY AFTER FAMIN INTXN, WHICH WAS ALREADY MY NEXT WAYPOINT, THOUGH FURTHER AWAY. THE TIME TO WEVER INTXN WAS CALCULATED FOR GOING BEYOND IT TO FAMIN, THEN BACK TO WEVER. I USED THIS TIME TO CALCULATE MY START DSCNT TIME. BY THAT TIME I REALIZED I WAS TOO CLOSE TO GET DOWN IN TIME. I WASTED VALUABLE TIME TRYING TO FIGURE OUT WHY MY DME TOLD ME I WAS ALMOST TO WEVER INTXN WHEN THE LORAN SAID I HAD MI TO GO. SHOULD HAVE XCHKED SOONER.

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.