Narrative:

First flight of the day; maintenance delay; was given a new plane from the hangar; we were 2 hours late. ATC was the usual very busy as chicago can get. Base leg; turn to intercept 27R localizer; had visual on runway; 'direct to silby; maintain 170 KTS; cleared visual 27R'. At 1;000 ft; pilot not flying '1;000 ft' pilot flying 'set missed approach altitude.' I never said 'no clearance to land.' we landed without a landing clearance; taxied off runway; captain said 'we are still on approach control; we did not get clearance to land.' neither of us caught the mistake. I strongly believe that if we would receive adequate training on our new procedures; both the captain and I would have corrected our actions and called tower for clearance. What I have learned from this event; firstly as pilot flying at 1;000 ft I now will say 'set missed approach altitude we are cleared to land' or 'not cleared to land' if that is the situation. Taking out 'cleared to land' at 1;000 ft I believe is a threat to our operations. Secondly; as a pilot we have habits we have been operating under certain procedures for many years. To think we can change our procedures via computer based training is ludicrous! Lastly; as we fly we always have 'threats' and we manage them with training; experience; knowledge; checklists to name a few tools. Now our checklists have been changed; procedures changed; culture changed; all changed without training.

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Original NASA ASRS Text

Title: B757 flight crew describe the circumstances surrounding a landing without clearance at ORD.

Narrative: First flight of the day; maintenance delay; was given a new plane from the hangar; we were 2 hours late. ATC was the usual very busy as Chicago can get. Base leg; turn to intercept 27R LOC; had visual on runway; 'direct to SILBY; maintain 170 KTS; cleared visual 27R'. At 1;000 FT; pilot not flying '1;000 FT' pilot flying 'Set missed approach Altitude.' I never said 'no clearance to land.' We landed without a landing clearance; taxied off runway; Captain said 'We are still on Approach Control; we did not get clearance to land.' Neither of us caught the mistake. I STRONGLY believe that if we would receive adequate training on our new procedures; both the Captain and I would have corrected our actions and called Tower for clearance. What I have learned from this event; firstly as pilot flying at 1;000 FT I now will say 'set missed approach altitude we are cleared to land' or 'not cleared to land' if that is the situation. Taking out 'cleared to land' at 1;000 FT I believe is a threat to our operations. Secondly; as a pilot we have habits we have been operating under certain procedures for many years. To think we can change our procedures via computer based training is ludicrous! Lastly; as we fly we always have 'Threats' and we manage them with training; experience; knowledge; checklists to name a few tools. Now our checklists have been changed; procedures changed; culture changed; all changed without training.

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.