C208 first officer reported noticing smell of smoke so the aircraft was landed as soon as practicabl...

Attributes
ACN	1273215
Time
Date	201506
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Caravan Undifferentiated
Operating Under FAR Part	Part 135
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Air Conditioning Compressor
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Commercial
Experience	Flight Crew Last 90 Days 70 Flight Crew Total 550 Flight Crew Type 60
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

Entering downwind I smelled smoke. It was an unusual smell of smoke. So I notified the captain. He said he smelled it too. Not sure of what it was; we decided to treat it as an inflight fire and descended quickly and landed as soon as it was practicable. After landing we unloaded all the passengers on board as quick as possible. We were able to see there was smoke coming out of the engine cowling. Once the passengers were sent to a safe place we opened the engine cowling. The AC compressor was on fire. My captain immediately extinguished the fire with a fire extinguisher. No one was injured during this incident. Few hours later the aircraft was secured. We acted quickly even though we were unsure of where the smoke was coming from. Corrective action would be to continue to act quickly based on what we have been trained to do. And do it quickly in without wasting any time.

Original NASA ASRS Text

Title: C208 First Officer reported noticing smell of smoke so the aircraft was landed as soon as practicable. After landing the air conditioning compressor was found to be the source of the smoke.

Narrative: Entering downwind I smelled smoke. It was an unusual smell of smoke. So I notified the captain. He said he smelled it too. Not sure of what it was; we decided to treat it as an inflight fire and descended quickly and landed as soon as it was practicable. After landing we unloaded all the passengers on board as quick as possible. We were able to see there was smoke coming out of the engine cowling. Once the passengers were sent to a safe place we opened the engine cowling. The AC compressor was on fire. My captain immediately extinguished the fire with a fire extinguisher. No one was injured during this incident. Few hours later the aircraft was secured. We acted quickly even though we were unsure of where the smoke was coming from. Corrective action would be to continue to act quickly based on what we have been trained to do. And do it quickly in without wasting any time.

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.

C208 first officer reported noticing smell of smoke so the aircraft was landed as soon as practicable. After landing the air conditioning compressor was found to be the source of the smoke.