Caravan Undifferentiated
Flight Crew Air Transport Pilot (ATP)
Distraction; Physiological - Other
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Illness / Injury; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Flight Crew Took Evasive Action; General Physical Injury / Incapacitation
Aircraft; Environment - Non Weather Related; Human Factors
Training flight on C208 Caravan with new TKS conversion. Operated TKS on preflight; observed streams of TKS from wing leading edge running into cabin ventilation intake at top of strut. In flight turned on TKS for demo; both pilots immediately noticed subtle chemical odor in cockpit; instructor's throat became irritated; dry; scratchy; and thirsty; strange taste in mouth and on lips. Student immediately said he was beginning to get a bad headache. Instructor's voice began to become very scratchy. Have noticed TKS aircraft have a film on entire aircraft inside and out. MSDS warns of touching fluid; and breathing vapor from fluid. FAA needs to look at TKS hazmat contamination of crews and rampers on C208 TKS aircraft. Lots of pilots getting sick on C208 TKS.
A C208 Instructor activated the TKS anti-ice system during preflight then again inflight. Both the instructor and student felt chemical effects with various symptoms: irritated throat; odd taste and odor; headache.