Emb-145 first officer reported smoke in cockpit; flight attendants reported smoke in the passenger c...

Narrative:

In cruise at flight level 250 smoke began to fill the cockpit. Captain and I observed a burning smell and our eyes were irritated. Our flight attendant happened to be on the interphone at the same time and also noticed smoke in the cabin particularly near row 18. We executed the cabin fire or smoke immediate action items and proceeded to the QRH. QRH first directed us to the air conditioning smoke procedure. We closed both engine bleeds and began a descent to 11000. At this point the smoke seemed to stop and slowly dissipated. Cause: overweight landing: we elected to land 300 pounds over mldw; captain and I agreed the risk associated with continuing the flight to burn fuel were greater than landing slightly overweight. Suggestions: the company should determine the source and cause of the smoke.

Original NASA ASRS Text

Title: EMB-145 First Officer reported smoke in cockpit; flight attendants reported smoke in the passenger cabin as well. Flight crew executed an uneventful diversion.

Narrative: In cruise at flight level 250 smoke began to fill the cockpit. Captain and I observed a burning smell and our eyes were irritated. Our Flight Attendant happened to be on the interphone at the same time and also noticed smoke in the cabin particularly near row 18. We executed the Cabin Fire or Smoke immediate action items and proceeded to the QRH. QRH first directed us to the Air Conditioning Smoke procedure. We closed both engine bleeds and began a descent to 11000. At this point the smoke seemed to stop and slowly dissipated. Cause: Overweight landing: we elected to land 300 pounds over MLDW; Captain and I agreed the risk associated with continuing the flight to burn fuel were greater than landing slightly overweight. Suggestions: The company should determine the source and cause of the smoke.

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	1699780
Time
Date	201911
Local Time Of Day	1801-2400
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	EMB ERJ 145 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Air Conditioning and Pressurization Pack
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Emb-145 first officer reported smoke in cockpit; flight attendants reported smoke in the passenger cabin as well. Flight crew executed an uneventful diversion.