Narrative:

On approach to ZZZ when the gear handle was selected down; we received a 'gear disagreement' warning message and aural alert. No movement was heard of the landing gear from the flight deck when the gear handle was selected down. A missed approach was immediately executed and ATC issued delay vectors. While being vectored around; the captain went through the emergency checklist which directed us to manual deployment of the landing gear. With the emergency gear handle pulled; we received 3 green down and locked indications on the EICAS. The checklist had a note the nosewheel steering may be affected. The captain and I briefed the landing if we were to lose nosewheel steering during the landing. Upon touchdown; a steering inoperative caution message appeared followed by a single chime. The captain took control of the airplane and used differential braking/thrust to taxi the aircraft near the gate. In the meantime; I talked to dispatch; maintenance; operations; and the flight attendant; and let them know of the situation. We ended up taxiing outside the gate and proceeded to shut down the engines. We were then met by ground crew who used the tug to bring us in to the gate.

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Original NASA ASRS Text

Title: CRJ900 FO REPORTS GEAR FAILS TO EXTEND NORMALLY DURING APPROACH. NORMAL LANDING ENSUES AFTER MANUAL EXTENSION WITH INOPERATIVE NOSEWHEEL STEERING.

Narrative: ON APCH TO ZZZ WHEN THE GEAR HANDLE WAS SELECTED DOWN; WE RECEIVED A 'GEAR DISAGREEMENT' WARNING MESSAGE AND AURAL ALERT. NO MOVEMENT WAS HEARD OF THE LNDG GEAR FROM THE FLT DECK WHEN THE GEAR HANDLE WAS SELECTED DOWN. A MISSED APCH WAS IMMEDIATELY EXECUTED AND ATC ISSUED DELAY VECTORS. WHILE BEING VECTORED AROUND; THE CAPT WENT THROUGH THE EMER CHKLIST WHICH DIRECTED US TO MANUAL DEPLOYMENT OF THE LNDG GEAR. WITH THE EMER GEAR HANDLE PULLED; WE RECEIVED 3 GREEN DOWN AND LOCKED INDICATIONS ON THE EICAS. THE CHKLIST HAD A NOTE THE NOSEWHEEL STEERING MAY BE AFFECTED. THE CAPT AND I BRIEFED THE LNDG IF WE WERE TO LOSE NOSEWHEEL STEERING DURING THE LNDG. UPON TOUCHDOWN; A STEERING INOP CAUTION MESSAGE APPEARED FOLLOWED BY A SINGLE CHIME. THE CAPT TOOK CTL OF THE AIRPLANE AND USED DIFFERENTIAL BRAKING/THRUST TO TAXI THE ACFT NEAR THE GATE. IN THE MEANTIME; I TALKED TO DISPATCH; MAINT; OPS; AND THE FLT ATTENDANT; AND LET THEM KNOW OF THE SITUATION. WE ENDED UP TAXIING OUTSIDE THE GATE AND PROCEEDED TO SHUT DOWN THE ENGS. WE WERE THEN MET BY GND CREW WHO USED THE TUG TO BRING US IN TO THE GATE.

Data retrieved from NASA's ASRS site as of May 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.