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A B737 failed to stay within holding pattern airspace because the hold was incorrectly programmed in the FMC.
| Attributes | |
| ACN | 706219 |
| Time | |
| Date | 200607 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : bal.vortac |
| State Reference | MD |
| Altitude | msl single value : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : holding |
| Route In Use | arrival star : natnl1 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 706219 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | airspace violation : exit non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended or assigned course |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We were issued holding instructions from ATC (ZDC) to hold at skils intersection as published on the natnl 1 RNAV arrival. The depicted holding pattern show the required leg distance of the pattern legs at 4 NM. I was the PF and programmed the FMC for the hold. Instead of entering the 4 NM leg distance in the FMC. I entered the 4 NM on the leg portion of the holding page. When we turned outbound after entering the hold; we flew too far outbound and left the depicted holding pattern. ATC asked why we left the holding pattern. We indicated that we made a programming error and would turn back to and re-establish the holding pattern. We were both very busy avoiding WX and the captain did not check the FMC after I programmed the hold. He was busy calculating fuel requirements; talking to dispatch and the passenger. Our task load was high at that time. There was no conflict with other traffic.
Original NASA ASRS Text
Title: A B737 FAILED TO STAY WITHIN HOLDING PATTERN AIRSPACE BECAUSE THE HOLD WAS INCORRECTLY PROGRAMMED IN THE FMC.
Narrative: WE WERE ISSUED HOLDING INSTRUCTIONS FROM ATC (ZDC) TO HOLD AT SKILS INTXN AS PUBLISHED ON THE NATNL 1 RNAV ARR. THE DEPICTED HOLDING PATTERN SHOW THE REQUIRED LEG DISTANCE OF THE PATTERN LEGS AT 4 NM. I WAS THE PF AND PROGRAMMED THE FMC FOR THE HOLD. INSTEAD OF ENTERING THE 4 NM LEG DISTANCE IN THE FMC. I ENTERED THE 4 NM ON THE LEG PORTION OF THE HOLDING PAGE. WHEN WE TURNED OUTBOUND AFTER ENTERING THE HOLD; WE FLEW TOO FAR OUTBOUND AND LEFT THE DEPICTED HOLDING PATTERN. ATC ASKED WHY WE LEFT THE HOLDING PATTERN. WE INDICATED THAT WE MADE A PROGRAMMING ERROR AND WOULD TURN BACK TO AND RE-ESTABLISH THE HOLDING PATTERN. WE WERE BOTH VERY BUSY AVOIDING WX AND THE CAPT DID NOT CHK THE FMC AFTER I PROGRAMMED THE HOLD. HE WAS BUSY CALCULATING FUEL REQUIREMENTS; TALKING TO DISPATCH AND THE PAX. OUR TASK LOAD WAS HIGH AT THAT TIME. THERE WAS NO CONFLICT WITH OTHER TFC.
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.