PA28 flight instructor experiences a rough running engine during a cross country training flight and...

Attributes
ACN	1022185
Time
Date	201207
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	None
Flight Plan	VFR
Component
Aircraft Component	Reciprocating Engine Assembly
Person 1
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Flight Instructor Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 173.5 Flight Crew Total 617 Flight Crew Type 342
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During a training VFR cross country flight with a student we were climbing out of 4;500 to 5;500 ft; when the plane began to run extremely rough. I noticed that the egt was reading 240 degree on the second cylinder. I knew at that point I lost a cylinder. I was receiving flight following from approach; told them of the situation and I asked for the closest airport. I chose ZZZ as I was very familiar with it. I did not declare and emergency but they gave me priority. Landed without incident. I notified our repair shop and they flew out and concluded we had lost the #2 cylinder.

Original NASA ASRS Text

Title: PA28 flight instructor experiences a rough running engine during a cross country training flight and diverts to the the nearest airport ATC assistance.

Narrative: During a training VFR cross country flight with a student we were climbing out of 4;500 to 5;500 FT; when the plane began to run extremely rough. I noticed that the EGT was reading 240 degree on the second cylinder. I knew at that point I lost a cylinder. I was receiving flight following from Approach; told them of the situation and I asked for the closest airport. I chose ZZZ as I was very familiar with it. I did not declare and emergency but they gave me priority. Landed without incident. I notified our repair shop and they flew out and concluded we had lost the #2 cylinder.

Data retrieved from NASA's ASRS site as of July 2013 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.