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Pilot of aircraft with liquid cooled engine had loss of coolant quantity and a pegged main coolant temperature gauge; elected to declare an emergency and land. Subsequent maintenance discovery determined it was an indication error.
| Attributes | |
| ACN | 791199 |
| Time | |
| Date | 200806 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 9500 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | general aviation : personal |
| Make Model Name | Military Trainer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 16500 flight time type : 60 |
| ASRS Report | 791199 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : landed in emergency condition |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
In flight had an indication of loss of coolant; on other indications other than full pegged hot main coolant temperature; auxiliary coolant temperature normal; coolant pressure normal; elected to declare an emergency for safety and handling with ZZZ tower as it was the closest airport. Controller gave just the right amount of information and made it a non-event. The owners' mechanic was summoned; determined it was a false indication; coolant level normal; aircraft flown back to ZZZ1.
Original NASA ASRS Text
Title: PLT OF ACFT WITH LIQUID COOLED ENGINE HAD LOSS OF COOLANT QUANTITY AND A PEGGED MAIN COOLANT TEMP GAUGE; ELECTED TO DECLARE AN EMERGENCY AND LAND. SUBSEQUENT MAINTENANCE DISCOVERY DETERMINED IT WAS AN INDICATION ERROR.
Narrative: IN FLT HAD AN INDICATION OF LOSS OF COOLANT; ON OTHER INDICATIONS OTHER THAN FULL PEGGED HOT MAIN COOLANT TEMP; AUX COOLANT TEMP NORMAL; COOLANT PRESSURE NORMAL; ELECTED TO DECLARE AN EMER FOR SAFETY AND HANDLING WITH ZZZ TWR AS IT WAS THE CLOSEST ARPT. CTLR GAVE JUST THE RIGHT AMOUNT OF INFO AND MADE IT A NON-EVENT. THE OWNERS' MECH WAS SUMMONED; DETERMINED IT WAS A FALSE INDICATION; COOLANT LEVEL NORMAL; ACFT FLOWN BACK TO ZZZ1.
Data retrieved from NASA's ASRS site as of May 2009 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.