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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Flight crew of a B747-400 started turning the wrong way in a high altitude arrival holding pattern which was caught by ATC who intervened and directed the rptrs back to the initial holding fix.
| Attributes | |
| ACN | 383946 |
| Time | |
| Date | 199710 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : btg |
| State Reference | WA |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zse |
| Operator | common carrier : air carrier |
| Make Model Name | B747-SR |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | other other : other pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 6500 flight time type : 3000 |
| ASRS Report | 383946 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | other other : other pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 11850 flight time type : 3850 |
| ASRS Report | 383950 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared to hold as published at btg. I looked at the olm 2 arrival but mistakenly looked at olm, where the published hold is left turns. The captain looked on the high chart, saw btg holding as right turns. I asked the captain to resolve the l-r discrepancy with ATC, and we were again told to hold as published on the olm 2 arrival. I still had not caught my own error, so we entered the hold and turned left. The controller noted our left turn, said to us that we were supposed to turn right. He then cleared us back to btg and cleared us for the olm 2 arrival. He said nothing further. The lesson was: pay attention to details and always keep up vigilance. Go as far as is necessary to resolve a discrepancy. I should have suspected something in error since the pattern on the high chart and the pattern on the arrival (at the wrong fix) were in disagreement.
Original NASA ASRS Text
Title: FLC OF A B747-400 STARTED TURNING THE WRONG WAY IN A HIGH ALT ARR HOLDING PATTERN WHICH WAS CAUGHT BY ATC WHO INTERVENED AND DIRECTED THE RPTRS BACK TO THE INITIAL HOLDING FIX.
Narrative: WE WERE CLRED TO HOLD AS PUBLISHED AT BTG. I LOOKED AT THE OLM 2 ARR BUT MISTAKENLY LOOKED AT OLM, WHERE THE PUBLISHED HOLD IS L TURNS. THE CAPT LOOKED ON THE HIGH CHART, SAW BTG HOLDING AS R TURNS. I ASKED THE CAPT TO RESOLVE THE L-R DISCREPANCY WITH ATC, AND WE WERE AGAIN TOLD TO HOLD AS PUBLISHED ON THE OLM 2 ARR. I STILL HAD NOT CAUGHT MY OWN ERROR, SO WE ENTERED THE HOLD AND TURNED L. THE CTLR NOTED OUR L TURN, SAID TO US THAT WE WERE SUPPOSED TO TURN R. HE THEN CLRED US BACK TO BTG AND CLRED US FOR THE OLM 2 ARR. HE SAID NOTHING FURTHER. THE LESSON WAS: PAY ATTN TO DETAILS AND ALWAYS KEEP UP VIGILANCE. GO AS FAR AS IS NECESSARY TO RESOLVE A DISCREPANCY. I SHOULD HAVE SUSPECTED SOMETHING IN ERROR SINCE THE PATTERN ON THE HIGH CHART AND THE PATTERN ON THE ARR (AT THE WRONG FIX) WERE IN DISAGREEMENT.
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.