B737 captain reports being cleared via the YOKES4 dehli transition; departing runway 8 at den. After...

Attributes
ACN	1277489
Time
Date	201507
Local Time Of Day	0001-0600
Place
Locale Reference	DEN.Airport
State Reference	CO
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	SID YOKES4
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Captain Pilot Not Flying
Experience	Flight Crew Last 90 Days 193 Flight Crew Total 2603 Flight Crew Type 300
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

Runway 08 YOKES4 dehli transition. All was entered and checked for proper entry and there were no discontinuities to repair on the legs page. Tower cleared us for takeoff; turn left heading 065 degrees. We were then cleared direct yokes climb and maintain FL230. Approximately 5 minutes after yokes denver center asked what fix we were going to. The FMC was programmed direct onl after yokes. The FMC dropped two fixes between yokes and onl; dehli was no longer in the legs page. I do not know when this took place. Center then asked us if we had a runway change. We did not. They stated that this has been occurring for about one year. If this is true; why am I just now hearing about this? I do not know if this is an FMC anomaly; if so it needs to be addressed so it doesn't continue happening. If this has been occurring for a year why hasn't it already been addressed?

Original NASA ASRS Text

Title: B737 Captain reports being cleared via the YOKES4 DEHLI transition; departing Runway 8 at DEN. After YOKES the aircraft proceeds direct to ONL; since the DEHLI transition had been eliminated from the FMC. ATC takes notice and states that this has been occurring for about a year.

Narrative: RWY 08 YOKES4 DEHLI transition. All was entered and checked for proper entry and there were no discontinuities to repair on the legs page. Tower cleared us for takeoff; turn left heading 065 degrees. We were then cleared direct YOKES climb and maintain FL230. Approximately 5 minutes after YOKES Denver center asked what fix we were going to. The FMC was programmed direct ONL after YOKES. The FMC dropped two fixes between YOKES and ONL; DEHLI was no longer in the legs page. I do not know when this took place. Center then asked us if we had a runway change. We did not. They stated that this has been occurring for about one year. If this is true; why am I just now hearing about this? I do not know if this is an FMC anomaly; if so it needs to be addressed so it doesn't continue happening. If this has been occurring for a year why hasn't it already been addressed?

Data retrieved from NASA's ASRS site 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.

B737 captain reports being cleared via the YOKES4 dehli transition; departing runway 8 at den. After yokes the aircraft proceeds direct to onl; since the dehli transition had been eliminated from the FMC. ATC takes notice and states that this has been occurring for about a year.