Crj-200 flight crew reported an autopilot anomaly forced a go-around and the weather deteriorated du...

Attributes
ACN	1597079
Time
Date	201811
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Component
Aircraft Component	Autopilot
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Fuel Issue Inflight Event / Encounter Unstabilized Approach Inflight Event / Encounter Weather / Turbulence

Narrative:

The ASOS weather on the field was 110/05 4 sm br clear skies temp 13/12 alt 29.85. We attempted the first approach; where ATC kept us at 2;800 feet until the FAF; per their requirements. First officer descended using the automation to approximately 300 feet. The autopilot pitched forcefully down and to the left. He disengaged at the shaker; I took control and executed the go-around. During this attempt; we had the runway lights in sight. I remained at the flight controls for the second attempt where at minimums the field was not in sight; a second missed approach was executed. Center was contacted; with their assistance; we decided on [a nearby alternate] as the diversion destination based on weather and proximity. We began a climb to 5000 feet with approximately 1300 pounds total fuel. Dispatch was notified. We landed at [the alternate] with no further incident.upon reaching minimums on the second attempt; we noted the fuel quantity and took action to find an alternate airport.weather was not as expected at the destination; no alternate was provided based on the expected weather at the time of arrival.if presented with this set circumstances [again]; I would not attempt a second approach. I would divert to an alternate airport with better weather.

Original NASA ASRS Text

Title: CRJ-200 flight crew reported an autopilot anomaly forced a go-around and the weather deteriorated during the second approach; resulting in a minimum fuel diversion to the nearest alternate.

Narrative: The ASOS weather on the field was 110/05 4 sm BR clear skies temp 13/12 alt 29.85. We attempted the first approach; where ATC kept us at 2;800 feet until the FAF; per their requirements. First Officer descended using the automation to approximately 300 feet. The autopilot pitched forcefully down and to the left. He disengaged at the shaker; I took control and executed the go-around. During this attempt; we had the runway lights in sight. I remained at the flight controls for the second attempt where at minimums the field was not in sight; a second missed approach was executed. Center was contacted; with their assistance; we decided on [a nearby alternate] as the diversion destination based on weather and proximity. We began a climb to 5000 feet with approximately 1300 pounds total fuel. Dispatch was notified. We landed at [the alternate] with no further incident.Upon reaching minimums on the second attempt; we noted the fuel quantity and took action to find an alternate airport.Weather was not as expected at the destination; no alternate was provided based on the expected weather at the time of arrival.If presented with this set circumstances [again]; I would not attempt a second approach. I would divert to an alternate airport with better weather.

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.

Crj-200 flight crew reported an autopilot anomaly forced a go-around and the weather deteriorated during the second approach; resulting in a minimum fuel diversion to the nearest alternate.