R22 PLT MADE A PRECAUTIONARY LNDG AFTER EXPERIENCING POSSIBLE ENG PROBS IN ZLA CLASS G.

Narrative

THE PF OF HELI XXX MADE A PRECAUTIONARY LNDG ON THE SIDE OF THE FREEWAY. HWY PATROL CALLED A TOW TRUCK TO TRANSPORT THE ACFT TO A RECOVERY YARD. I WENT TO THE RECOVERY YARD; TALKED TO THE PLT ABOUT HIS LNDG. I DETERMINED THAT HE HAD MADE THE LNDG DUE TO FLUCTUATING TACHOMETER INDICATION. I CALLED THE A&P THAT MAINTAINS THE ACFT. HE TOLD ME TO CHK A PLUG ON THE L-HAND MAGNETO. THIS I DID. I FOUND NO PROB. I THEN STARTED THE ENG AND PERFORMED ALL OF THE PWR CHKS. ALL INDICATIONS NORMAL. I PICKED THE ACFT UP TO A HOVER FOR PWR CHKS. ALL INDICATIONS NORMAL. I THEN STOPPED THE ACFT AND DID ANOTHER VISUAL INSPECTION; ALL NORMAL. I RESTARTED THE ACFT AND PERFORMED A TKOF AND CLBED TO 700 FT AGL AND FLEW 5-7 MINS AT VARIOUS PWR SETTINGS; ALL NORMAL. I THEN FLEW THE ACFT TO ITS BASE AT LGB. DURING THIS FLT; ALL INDICATIONS NORMAL. DURING ALL OF THE PREFLT AND INSPECTIONS; I DID NOT FIND ANY DISCREPANCIES OR MAKE ANY ALTERATIONS. I DETERMINED THAT THE ACFT WAS AIRWORTHY AND SAFE TO FLY. AT THE SCENE OF THE ORIGINAL LNDG; THE FAA AND NTSB WERE NOTIFIED. IT WAS NOT INDICATED THAT THE ACFT COULD NOT BE MOVED. I BELIEVE THE ORIGINAL PLT HAD SOME ELECTRICAL INTERFERENCE ON THE TACHOMETER. HE STATED THE PWR WAS STABLE. HE MADE A GOOD DECISION TO MAKE A PRECAUTIONARY LNDG. THE REPOSITIONING FLT WAS NOT AN ISSUE.