DA40 flight instructor reported departing for home field with a freshly qualified private pilot; onl...

Narrative:

Instructor flew into [the airport] with a student for a private pilot checkride. The student passed the checkride and we were returning to city of origin. The student and instructor failed to properly preflight the aircraft and did not remove the cowl plugs. The aircraft departed runway 32 and at approximately 300 feet AGL on takeoff climb out; the cylinder head temperature began to climb rapidly. At approximately 500 feet AGL; with no more usable runway; the cylinder head temperature went into the red as the engine began to overheat. Continuing the climb; the student and instructor alerted tower immediately; and tower gave permission for the aircraft to join a left base for runway 1. Following; the oil temperature began to rise rapidly and got into the red before making a safe landing. The instructor and student then taxied to the west ramp and shut down the engine as soon as possible.it is important as instructors to never allow your guard to be lowered. With the student just passing the checkride; I allowed myself to become complacent and instead of inspecting the aircraft without bias; I did so with the assumption that the aircraft had been properly preflighted.

Original NASA ASRS Text

Title: DA40 Flight Instructor reported departing for home field with a freshly qualified Private Pilot; only to discover while airborne that the cowl plugs had not been removed. Oil temperature quickly rose into the red and the reporter and his student returned to the departure airport.

Narrative: Instructor flew into [the airport] with a student for a Private Pilot checkride. The student passed the checkride and we were returning to city of origin. The student and instructor failed to properly preflight the aircraft and did not remove the cowl plugs. The aircraft departed RWY 32 and at approximately 300 feet AGL on takeoff climb out; the cylinder head temperature began to climb rapidly. At approximately 500 feet AGL; with no more usable runway; the cylinder head temperature went into the red as the engine began to overheat. Continuing the climb; the student and instructor alerted Tower immediately; and tower gave permission for the aircraft to join a left base for RWY 1. Following; the oil temperature began to rise rapidly and got into the red before making a safe landing. The instructor and student then taxied to the West Ramp and shut down the engine as soon as possible.It is important as instructors to never allow your guard to be lowered. With the student just passing the checkride; I allowed myself to become complacent and instead of inspecting the aircraft without bias; I did so with the assumption that the aircraft had been properly preflighted.

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	1385736
Time
Date	201609
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Tower
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	DA40 Diamond Star
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	None
Flight Plan	VFR
Person 1
Function	Instructor
Qualification	Flight Crew Flight Instructor Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 197 Flight Crew Type 158
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Ground Event / Encounter Other / Unknown

DA40 flight instructor reported departing for home field with a freshly qualified private pilot; only to discover while airborne that the cowl plugs had not been removed. Oil temperature quickly rose into the red and the reporter and his student returned to the departure airport.