Date: 202105
Local time of day: 0601-1200
Location: ZZZ.Airport, US
Light: Daylight
Aircraft: Small Transport; Low Wing; 2 Turbojet Eng
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Taxi
Aircraft component: Air Conditioning and Pressurization Pack
Component problem: Malfunctioning
Reporter organization: Air Carrier
Reporter function: Flight Attendant (On Duty)
Reporter qualification: Flight Attendant Current
Human factors: Physiological - Other
Anomaly: Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Illness / Injury; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Detector: Person Flight Attendant; Person Passenger
When detected: Taxi
Result: Air Traffic Control Provided Assistance; Flight Crew Returned To Gate; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Overcame Equipment Problem; General Maintenance Action; General Flight Cancelled / Delayed
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: Operating flight ZZZ-ZZZ1. Myself and other Flight Attendant during taxi noticed a musty like fume smell moments after pilots turned on the engines. Followed by extremely hot temperatures in the cabin which overtook the cabin. Immediately we noticed the majority of the customers reaching for their air vents and received multiple comments about the aircraft blowing 'hot air'. We walked through the cabin and were able to identify the fumes were coming from the Air supply vents towards the FWD of the Cabin. The intensity was Level 2 Moderate. Flight Deck was notified immediately. The moment the engines turned on I immediately felt a sudden rush of heat and immediate chest pain/tightness; nausea; and the air felt very thick making it slightly harder to breath. Ones the Flight Deck was notified they immediately responded and shut off the engines. I gradually began to feel better and my symptoms eventually went away. We returned to gate and deplaned the aircraft. Maintenance requested details of the Fume Event which we provided. Maintenance deferred the P.A.C.K. located in the FWD of the aircraft which stopped the Fumes. We re-boarded and departed from ZZZ -ZZZ1.These fume events are happening more than it is being reported. The company procedure for these events are misleading crew members into reporting to the company as an ODOR (Smell) event vs Fumes event so that they don't have to report it properly. Out of fear of retaliation crew member choose to not report and ignore symptoms. These too common mechanical issues are exposing us to harmful chemical exposures and causing us to get sick at the moment and then experience more severe symptoms later. Myself and many crew members. If we can enforce and install Carbon Monoxide sensors on the aircraft which is something we have in our own homes and is not costly; we can prevent and attend to these fume events in a timely manner and prevent Crews/Customers from getting sick or worse situations that can cause a more severe safety incident.




Synopsis: Flight Attendant reported a ground gate return due to a fume event during taxi.