Cessna caravan first officer reported the flying pilot lost directional control after a hard landing...

Attributes
ACN	1419813
Time
Date	201601
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Caravan Undifferentiated
Operating Under FAR Part	Part 135
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 700 Flight Crew Type 200
Events
Anomaly	Ground Event / Encounter Loss Of Aircraft Control Ground Event / Encounter Object Ground Excursion Runway

Narrative:

Upon landing in a caravan cessna 208 with eight passengers on board; pilot in command was executing a coupled approach in VMC; unlimited ceiling; unlimited visibility; zero wind conditions. After disengaging the autopilot on the coupled approach approximately 300 feet off the ground; he hand flew and started to immediately drift to the left of centerline. Approximately 10 feet above the numbers he flared; and the speed was below 80 kts. Stall warning horn went off for about one second and we landed harder than normal. After touchdown he started to over-correct towards the centerline; while doing this the aircraft started to veer to the right and he was not able to regain control. The airplane then went off into the grass; hit a sewage drain and blew out a tire.there were no injuries. The tower asked us if we needed assistance; I said yes we will need a tow. At no time did I interfere with the landing or grab the controls.in my opinion he let the airspeed get too low; considering the amount of weight that we had on board; and he flared too soon/too high. That; combined with the weight on landing; [and] the momentum of his overcorrection led to the skating off the runway.

Original NASA ASRS Text

Title: Cessna Caravan FO reported the flying pilot lost directional control after a hard landing; went off the runway; and struck a drain; resulting in a flat tire.

Narrative: Upon landing in a Caravan Cessna 208 with eight passengers on board; pilot in command was executing a coupled approach in VMC; unlimited ceiling; unlimited visibility; zero wind conditions. After disengaging the autopilot on the coupled approach approximately 300 feet off the ground; he hand flew and started to immediately drift to the left of centerline. Approximately 10 feet above the numbers he flared; and the speed was below 80 kts. Stall warning horn went off for about one second and we landed harder than normal. After touchdown he started to over-correct towards the centerline; while doing this the aircraft started to veer to the right and he was not able to regain control. The airplane then went off into the grass; hit a sewage drain and blew out a tire.There were no injuries. The Tower asked us if we needed assistance; I said yes we will need a tow. At no time did I interfere with the landing or grab the controls.In my opinion he let the airspeed get too low; considering the amount of weight that we had on board; and he flared too soon/too high. That; combined with the weight on landing; [and] the momentum of his overcorrection led to the skating off the runway.

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.

Cessna caravan first officer reported the flying pilot lost directional control after a hard landing; went off the runway; and struck a drain; resulting in a flat tire.