Narrative:

I took off from ZZZ for a solo cross country flight. When I was 10 mi southeast of the airport I noticed a loss of RPM so I started switching tanks; leaning and enriching the mixture. Turning on the fuel pump and turning on carburetor heat; then asked FSS if they can help me. Then retried what they told me. Eventually lost too much power and altitude so I landed on a field. Supplemental information from acn 728449: my student was on a solo flight to ZZZ1 working towards his commercial training part 61; when he had an engine failure at 3000 ft MSL. He told me he proceeded with the emergency checklist and was unable to get the engine restarted. He landed safely in a field unharmed. My student did have a recent check-out in this aircraft (PA28-161) on feb/sun/07; during which we completed training on emergency procedures. Callback conversation with reporter acn 728449 revealed the following information: reporter stated that the exhaust manifold separated leading to a loss of power. The aircraft was repaired on site and flown out.

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Original NASA ASRS Text

Title: AN EXHAUST MANIFOLD OF PA28 CAME LOOSE CAUSING A PLT ON A SOLO FOR HIS COMMERCIAL RATING TO LAND OFF ARPT.

Narrative: I TOOK OFF FROM ZZZ FOR A SOLO XCOUNTRY FLT. WHEN I WAS 10 MI SE OF THE ARPT I NOTICED A LOSS OF RPM SO I STARTED SWITCHING TANKS; LEANING AND ENRICHING THE MIXTURE. TURNING ON THE FUEL PUMP AND TURNING ON CARB HEAT; THEN ASKED FSS IF THEY CAN HELP ME. THEN RETRIED WHAT THEY TOLD ME. EVENTUALLY LOST TOO MUCH PWR AND ALT SO I LANDED ON A FIELD. SUPPLEMENTAL INFO FROM ACN 728449: MY STUDENT WAS ON A SOLO FLT TO ZZZ1 WORKING TOWARDS HIS COMMERCIAL TRAINING PART 61; WHEN HE HAD AN ENG FAILURE AT 3000 FT MSL. HE TOLD ME HE PROCEEDED WITH THE EMER CHKLIST AND WAS UNABLE TO GET THE ENG RESTARTED. HE LANDED SAFELY IN A FIELD UNHARMED. MY STUDENT DID HAVE A RECENT CHK-OUT IN THIS ACFT (PA28-161) ON FEB/SUN/07; DURING WHICH WE COMPLETED TRAINING ON EMER PROCS. CALLBACK CONVERSATION WITH RPTR ACN 728449 REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE EXHAUST MANIFOLD SEPARATED LEADING TO A LOSS OF PWR. THE ACFT WAS REPAIRED ON SITE AND FLOWN OUT.

Data retrieved from NASA's ASRS site as of January 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.