A319 first officer reported during taxi for departure 'noxious odor' were detected throughout the ai...

Attributes
ACN	1693586
Time
Date	201910
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Taxi
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
Experience	Flight Crew Total 0
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Illness Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

After taxi out and after both engines were started and APU shut down we started smelling a very noxious odor. We checked with the flight attendants and they and the passengers also smelled the odor. We followed the appropriate checklist and decided to return to the gate. Once we started heading back to the gate we had a medical situation due to a passenger having a seizure. We notified maintenance; ATC; the company and the ramp. After returning to the gate we talked to the maintenance personnel and they informed us that this was the fourth time this had occurred [in the previous 10 days]. Something toxic is leaking into the air conditioning system. Find the cause of the smell and leak.

Original NASA ASRS Text

Title: A319 First Officer reported during taxi for departure 'noxious odor' were detected throughout the aircraft. Flight crew executed a ground gate return in which Medical and Maintenance met the aircraft.

Narrative: After taxi out and after both engines were started and APU shut down we started smelling a very noxious odor. We checked with the flight attendants and they and the passengers also smelled the odor. We followed the appropriate checklist and decided to return to the gate. Once we started heading back to the gate we had a medical situation due to a passenger having a seizure. We notified maintenance; ATC; the company and the ramp. After returning to the gate we talked to the maintenance personnel and they informed us that this was the fourth time this had occurred [in the previous 10 days]. Something toxic is leaking into the air conditioning system. Find the cause of the smell and leak.

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.

A319 first officer reported during taxi for departure 'noxious odor' were detected throughout the aircraft. Flight crew executed a ground gate return in which medical and maintenance met the aircraft.