Crj-200 first officer reported noting increasing vibration in flight that was related to the landing...

Narrative:

We were [climbing] out through 4;000 feet when I noticed that the aircraft [began to] vibrate. At first I did not think anything of it; but then [it] got worse. I checked our engine parameters and everything was normal. The vibration gauge was fine. A few seconds later three caution messages appeared. Bleed misconfig; parking brake; and one other one I don't remember. Passing through 5;000 feet I noticed we were going 250 knots and that the gear handle was up; but the gear indications were still green and in the down position. The vibration was from exceeding the aircraft limitations of the gear down speed. We slowed; leveled off at 7;000 feet and did our checklists. After that the gear came up fine and continued to [destination]. The messages went out after the gear was brought up. The captain wrote it up. Never seeing such a fail before; so I thought we were stalling or the engines might fail. Check speed with flaps or gear indications.

Original NASA ASRS Text

Title: CRJ-200 First Officer reported noting increasing vibration in flight that was related to the landing gear still being extended even with the gear handle in the up position.

Narrative: We were [climbing] out through 4;000 feet when I noticed that the aircraft [began to] vibrate. At first I did not think anything of it; but then [it] got worse. I checked our engine parameters and everything was normal. The vibration gauge was fine. A few seconds later three caution messages appeared. Bleed misconfig; parking brake; and one other one I don't remember. Passing through 5;000 feet I noticed we were going 250 knots and that the gear handle was up; but the gear indications were still green and in the down position. The vibration was from exceeding the aircraft limitations of the gear down speed. We slowed; leveled off at 7;000 feet and did our checklists. After that the gear came up fine and continued to [destination]. The messages went out after the gear was brought up. The Captain wrote it up. Never seeing such a fail before; so I thought we were stalling or the engines might fail. Check speed with flaps or gear indications.

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.

Attributes
ACN	1598722
Time
Date	201812
Local Time Of Day	0001-0600
Place
Locale Reference	UNV.Airport
State Reference	NY
Environment
Flight Conditions	IMC
Light	Dawn
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Landing Gear
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Speed All Types

Crj-200 first officer reported noting increasing vibration in flight that was related to the landing gear still being extended even with the gear handle in the up position.