Date: 202008
Local time of day: 0601-1200
Location: ZZZ.Airport, US
Flight conditions: VMC
Light: Daylight
Aircraft: EMB ERJ 145 ER/LR
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Takeoff / Launch
ATC / advisory: Tower ZZZ
Reporter organization: Air Carrier
Reporter function: Pilot Not Flying; Captain
Reporter qualification: Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Second reporter function: Pilot Flying; First Officer
Anomaly: Aircraft Equipment Problem Critical; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Detector: Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Flight Crew Rejected Takeoff; General Evacuated; General Flight Cancelled / Delayed; General Maintenance Action
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: We were cleared for takeoff in ZZZ. I began to notice smoke that appeared to be coming from the gasper and AC vents as we were passing through approximately 65-70 kts. The amount of smoke seemed to be increasing significantly and I detected a distinct burning oil/electrical smell. I made the decision to abort the takeoff as we were approaching 80 kts; took control of the aircraft; and stopped on the runway. The First Officer advised ATC and requested ARFF. I set the parking brake and made the following announcement over the PA: 'This is the Captain; Remain Seated; Remain Seated; Remain Seated'. The flight attendant immediately called the flight deck via the 'Cabin EMER' function of the interphone system and advised us that there was a lot of smoke in the cabin. I determined the most conservative and safest course of action was to evacuate the aircraft since we had no idea what was causing the smoke or if it would proceed to get worse; further exposing my crew and passengers to potentially toxic fumes and harmful smoke particles. The First Officer and I ran the evacuation checklist and I advised her that I would assist the passengers outside the aircraft and instructed her to remain inside and assist as necessary. Upon opening the cockpit door a haze of smoke was visible throughout the cabin. The ARFF equipment was already waiting outside so I proceeded to exit the aircraft and assist the passengers exiting via the main cabin door. All passengers (23 humans and 1 dog) were safely evacuated and bussed to the terminal. The ARFF team conducted a walk around inspection and a walk through inspection of the aircraft utilizing a thermal imaging camera. They did not detect any noticeable heat signatures; but did notice the presence of the smoke/fumes smell in the aircraft; particularly in the vicinity of the lavatory. They proceeded to inspect the cargo compartment as a precaution; but no visible sign of a fire was immediately discovered. The aircraft was towed to the maintenance hangar. I detected visible smoke followed by a distinct smell I would describe as a combination of burning oil and electrical. The Flight Attendant advised me of the presence of smoke throughout the cabin.Smoke/fumes from an unknown source on the takeoff roll.Aborted takeoff; requested ARFF assistance; stopped on the runway; and evacuated the aircraft. Evacuating an aircraft introduces a level of risk that we do not typically deal with during the course of a normal day flying the line; however; sudden smoke and fumes inside the aircraft also carry a significant amount of risk that we are not used to dealing with. I determined that the risk associated with further exposure to potentially toxic smoke and fumes from an unknown source; as well as a possible undetected fire; outweighed the risk associated with a controlled evacuation. The safety record of this business depends on our ability to effectively mitigate risks as they're presented to us. Everyday we analyze available information and are sometimes forced to make split-second decisions as a result. Scenarios like this are always going to be unique and we must rely on our training to lead us towards the safest course of action. There is no 'cookie cutter' approach that can be applied evenly across the board. I have no further suggestions.


Second narrative: It was my leg; ZZZ-ZZZ1. On the take-off roll in ZZZ; RWY XX; about 80kts; the Captain called for an abort and we aborted the take-off. As we were aborting I noticed a smell of smoke; and then I saw smoke in the cockpit. I called tower and advised them we were stopping on the runway; we were requesting priority handling; and needed fire trucks. The Captain brought the plane to a stop and then made the announcement to remain seated. The FA called immediately after and said there was smoke in the cabin and the Captain ordered an evacuation. We ran the evacuation checklist; then we opened the door to the cabin and saw it was smoky. The FA opened the main cabin door and people started to line up to evacuate. The Captain decided to help the passengers and asked me to remain in the aircraft. He went out of the aircraft as the fire trucks were arriving. The firemen brought over a ladder and helped the passengers off. We had 23 passengers and one dog and they all exited the aircraft and stood to the south of the plane waiting. There were no injuries. After all the passengers were off; I turned off the batteries and the courtesy lights and left the aircraft. The fire crew went on and detected smoke in the cabin and the lavatory; but no fire. They used a heat seeking device to look for fire but didn't find any. The passengers were bussed back to the terminal; and the crew went to the hangar.


Synopsis: ERJ-145 flight crew reported a rejected take off due to smoke and fumes detected; causing the evacuation of the aircraft.