A C208 instructor reported that following tks fluid exposure on a training flight; his very experien...

Narrative:

Training flights transitioning pilots to recent tks conversion. Tks fluid has contaminated the cockpit vent system. Appears high outside air temperature may make tks fluid (hazmat) contamination effect pilots very quick. Daily in training; I have watched multiple high time pilots; with lots of C208 experience announce they smell subtle tks odor when they open the cockpit door in high temps; then have immediate effects from tks fluid; headaches; coughing; throat irritation; bad taste in mouth; eye irritation. The scariest is I have watched two high time pilots complain of effects; then later are very confused and are unable to locate switches in aircraft; they don't even know where to start looking; and they have become confused as to what to do on a missed approach. Appears to be the symptoms of intoxication as the msds mentions when exposed to tks. Aircraft is coated in a sticky film inside and out; so are pilots. Very dangerous effects on crew.

Original NASA ASRS Text

Title: A C208 instructor reported that following TKS fluid exposure on a training flight; his very experienced student apparently became disoriented; unable to locate cockpit switches and confused about missed approach procedures.

Narrative: Training flights transitioning pilots to recent TKS conversion. TKS fluid has contaminated the cockpit vent system. Appears high outside air temperature may make TKS fluid (hazmat) contamination effect pilots very quick. Daily in training; I have watched multiple high time pilots; with lots of C208 experience announce they smell subtle TKS odor when they open the cockpit door in high temps; then have immediate effects from TKS fluid; headaches; coughing; throat irritation; bad taste in mouth; eye irritation. The scariest is I have watched two high time pilots complain of effects; then later are very confused and are unable to locate switches in aircraft; they don't even know where to start looking; and they have become confused as to what to do on a missed approach. Appears to be the symptoms of intoxication as the MSDS mentions when exposed to TKS. Aircraft is coated in a sticky film inside and out; so are pilots. Very dangerous effects on crew.

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	1164327
Time
Date	201404
Aircraft 1
Make Model Name	Caravan Undifferentiated
Operating Under FAR Part	Part 135
Flight Phase	Cruise Initial Climb Initial Approach
Component
Aircraft Component	Aerofoil Ice System
Person 1
Function	Check Pilot Instructor
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor Flight Deck / Cabin / Aircraft Event Illness

A C208 instructor reported that following tks fluid exposure on a training flight; his very experienced student apparently became disoriented; unable to locate cockpit switches and confused about missed approach procedures.