A C208 crew was informed after flight in icing conditions that the aircraft's tks system was mistake...

Attributes
ACN	1227580
Time
Date	201412
Local Time Of Day	0601-1200
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Caravan 208B
Operating Under FAR Part	Part 135
Flight Phase	Parked
Flight Plan	IFR
Component
Aircraft Component	De-Icing Fluid
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Commercial
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance Flight Deck / Cabin / Aircraft Event Other / Unknown Inflight Event / Encounter Weather / Turbulence

Narrative:

We took aircraft the aircraft round trip. We were in and out of IMC both there and back. Temperature was above freezing on first leg; but on return we momentarily picked up some trace ice. De-ice system was activated normally per the company SOP and aircraft poh. System was only used in the normal position for a few minutes. Later that afternoon while preparing to take the same aircraft for another flight; I was informed that glycol was added to the tks fluid tank. Neither the captain nor myself had knowledge of this prior to departing and only became aware later that afternoon.

Original NASA ASRS Text

Title: A C208 crew was informed after flight in icing conditions that the aircraft's TKS system was mistakenly serviced with glycol instead of the authorized fluid.

Narrative: We took aircraft the aircraft round trip. We were in and out of IMC both there and back. Temperature was above freezing on first leg; but on return we momentarily picked up some trace ice. De-ice system was activated normally per the company SOP and aircraft POH. System was only used in the normal position for a few minutes. Later that afternoon while preparing to take the same aircraft for another flight; I was informed that glycol was added to the TKS fluid tank. Neither the captain nor myself had knowledge of this prior to departing and only became aware later that afternoon.

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.

A C208 crew was informed after flight in icing conditions that the aircraft's tks system was mistakenly serviced with glycol instead of the authorized fluid.