Narrative:

We initially received the aircraft as the first flight of the day in ZZZ; and flew it to ZZZZ. The book was reviewed by both myself and the captain; and we noticed that there had been several write-ups for nose wheel steering issues; including pulling to the left. I actually flew the same ship several weeks earlier and had a nose wheel steering inoperative caution message. There were no open write ups; and it was both the captain's and my opinion that the aircraft was back in an airworthy state and that the issue had been resolved. The captain flew the first leg to ZZZZ; and I flew the aircraft to ZZZ1. A slight shimmy in the nose wheel was noticed on takeoff from ZZZZ to ZZZ1; however to my best knowledge; the aircraft was airworthy and no other issues had been discovered. Upon landing in ZZZ1; the airplane pulled noticeably to the left with the nose wheel on the ground; on both rollout as well as taxi. Pulling into the gate; I called station ops and informed them to have maintenance at the gate to inspect the nose wheel. After arriving at the gate; we were met by maintenance as well as an FAA standards official; who grounded the aircraft due to the nose wheel not being properly aligned.once again; to the best of my knowledge; this aircraft was fixed and airworthy to fly to ZZZ1. The mechanical issue that grounded the aircraft was likely the same mechanical issue that caused my earlier flight to be in an emergency state. This issue was never properly fixed despite numerous maintenance write-offs; causing two separate unsafe events.

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Original NASA ASRS Text

Title: A CRJ-900 First Officer reported the aircraft; with a history of nose wheel steering malfunctions; was flown on the day's first two legs without a problem. After landing at the second destination; the aircraft again pulled noticeably left. At the gate a FAA Standards Official removed the aircraft from service.

Narrative: We initially received the aircraft as the first flight of the day in ZZZ; and flew it to ZZZZ. The book was reviewed by both myself and the captain; and we noticed that there had been several write-ups for nose wheel steering issues; including pulling to the left. I actually flew the same ship several weeks earlier and had a nose wheel steering inoperative caution message. There were no open write ups; and it was both the captain's and my opinion that the aircraft was back in an airworthy state and that the issue had been resolved. The captain flew the first leg to ZZZZ; and I flew the aircraft to ZZZ1. A slight shimmy in the nose wheel was noticed on takeoff from ZZZZ to ZZZ1; however to my best knowledge; the aircraft was airworthy and no other issues had been discovered. Upon landing in ZZZ1; the airplane pulled noticeably to the left with the nose wheel on the ground; on both rollout as well as taxi. Pulling into the gate; I called Station Ops and informed them to have maintenance at the gate to inspect the nose wheel. After arriving at the gate; we were met by maintenance as well as an FAA standards official; who grounded the aircraft due to the nose wheel not being properly aligned.Once again; to the best of my knowledge; this aircraft was fixed and airworthy to fly to ZZZ1. The mechanical issue that grounded the aircraft was likely the same mechanical issue that caused my earlier flight to be in an emergency state. This issue was never properly fixed despite numerous maintenance write-offs; causing two separate unsafe events.

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.