Narrative:

Requested push back clearance from D concourse. Ramp control cleared us for push back for and east taxi to runway 19L. I relayed the east taxi instructions to the push crew which began to push us back for a west taxi. Ramp control decided to let us continue the push and he would turn us around for the east taxi. Push back complete; we called for taxi instructions. We were told to watch the push off of C concourse and to make a right turn and proceed to the C line. The first officer verified we were still going to 19L;(which was behind us); and the ramp controller replied in the affirmative. Both the first officer and I took this to mean a 180 turn to the C line. After making the turn and lining up on the C line; the ramp controller said he wanted us to move to the C line and face east; not make a 180 turn which our company did not allow. He then instructed us to move back to the D line and follow company out to 19L. Time permitting; I again looked at the 10-7 page for any notes I may have missed concerning 180 turns in the alley. All I could find was jet blast warnings while moving from the C to the D line; (I used idle thrust through-out the turn). A note prohibiting 180 turns in the alley would be helpful.

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Original NASA ASRS Text

Title: An air carrier Captain made a 180 degree turn on an ORD Ramp and was told after the fact that maneuver was not permitted. He requested a statement be include on the airport's 10-7 page noting the prohibition.

Narrative: Requested push back clearance from D concourse. Ramp Control cleared us for push back for and east taxi to Runway 19L. I relayed the east taxi instructions to the push crew which began to push us back for a west taxi. Ramp Control decided to let us continue the push and he would turn us around for the east taxi. Push back complete; we called for taxi instructions. We were told to watch the push off of C concourse and to make a right turn and proceed to the C line. The First Officer verified we were still going to 19L;(which was behind us); and the Ramp Controller replied in the affirmative. Both the First Officer and I took this to mean a 180 turn to the C line. After making the turn and lining up on the C line; the Ramp Controller said he wanted us to move to the C line and face east; not make a 180 turn which our company did not allow. He then instructed us to move back to the D line and follow company out to 19L. Time permitting; I again looked at the 10-7 page for any notes I may have missed concerning 180 turns in the alley. All I could find was jet blast warnings while moving from the C to the D line; (I used idle thrust through-out the turn). A note prohibiting 180 turns in the alley would be helpful.

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.