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An M20J pilot declared an emergency and diverted when he experienced a high temperature on the number four engine cylinder head.
| Attributes | |
| ACN | 852232 |
| Time | |
| Date | 200909 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | M-20 J (201) / Allegro |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Cylinder Head Temperature |
| Person 1 | |
| Function | Pilot Flying Single Pilot |
| Qualification | Flight Crew Sea Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 1400 Flight Crew Type 500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
During the cruise portion of trip at 7;000 ft; the engine monitor showed an unusually high cht reading on cylinder #4 (climbed quickly to 537F from mid 300's). I immediately notified ATC (under their control already); asked for immediate assistance and vectors to a nearby airport for immediate landing. I was asked if I wanted to declare an emergency. I said that I thought that I should. I was given priority handling and landed uneventfully. After landing and parking; I consulted with the local mechanic together with my home airport mechanic who both concluded that it was likely that cylinder #4 probe was the culprit. I departed after the local mechanic approved my departure; and returned home without further incident.
Original NASA ASRS Text
Title: An M20J pilot declared an emergency and diverted when he experienced a high temperature on the number four engine cylinder head.
Narrative: During the cruise portion of trip at 7;000 FT; the engine monitor showed an unusually high CHT reading on cylinder #4 (climbed quickly to 537F from mid 300's). I immediately notified ATC (under their control already); asked for immediate assistance and vectors to a nearby airport for immediate landing. I was asked if I wanted to declare an emergency. I said that I thought that I should. I was given priority handling and landed uneventfully. After landing and parking; I consulted with the local mechanic together with my home airport mechanic who both concluded that it was likely that cylinder #4 probe was the culprit. I departed after the local mechanic approved my departure; and returned home without further incident.
Data retrieved from NASA's ASRS site as of April 2012 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.