SR20 instructor pilot reported a high reading on the number five cylinder head temperature gauge aft...

Attributes
ACN	1382110
Time
Date	201608
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	SR20
Operating Under FAR Part	Part 91
Flight Phase	Climb
Component
Aircraft Component	Reciprocating Engine Assembly
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Commercial Flight Crew Flight Instructor
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

After takeoff; cht (cylinder head temperature) #5 started to increase and PIC took action; reducing the power and pitching the nose down to increase air flow; also PIC made sure that mixture was full rich and fuel pump was on boost. Cht #5 did not decrease or stabilize and kept rising; going to the red range and max number (500 F). PIC felt vibration and loss of power. PIC decided to [return] and turn to downwind of runway xxr. PIC kept a higher altitude just as a precaution and decided to ask for runway yy performing an emergency landing. During taxi; PIC observed that egt #5 went offline and cht #5 was not producing power anymore. PIC was cautious during taxi; trying to prevent any further damage to the engine. No damage was noticed on the aircraft or flight crew.

Original NASA ASRS Text

Title: SR20 instructor pilot reported a high reading on the number five cylinder head temperature gauge after takeoff. Attempts to remedy the problem were unsuccessful and they returned to the departure airport.

Narrative: After takeoff; CHT (Cylinder Head Temperature) #5 started to increase and PIC took action; reducing the power and pitching the nose down to increase air flow; also PIC made sure that mixture was full rich and fuel pump was on boost. CHT #5 did not decrease or stabilize and kept rising; going to the red range and max number (500 F). PIC felt vibration and loss of power. PIC decided to [return] and turn to downwind of Runway XXR. PIC kept a higher altitude just as a precaution and decided to ask for Runway YY performing an emergency landing. During taxi; PIC observed that EGT #5 went offline and CHT #5 was not producing power anymore. PIC was cautious during taxi; trying to prevent any further damage to the engine. No damage was noticed on the aircraft or flight crew.

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.