What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
14 CFR part 91.147 pilot reported during returning flight to landing pad that the helicopetr started a minor shake and the pilot thought it was because of a stuck engine valve. Pilot reported to home base to have a mechanic standing by at the landing pad. Pilotd stated he maintained 70 knots and 25INCHES of manifold pressure. Pilot reports he was decending at 300 feet per minute and he started pulling power to slow the decent. The engine was trailing smoke but still running with a small spike in RPM. Pilot realized he would not be able make the landing pad and performed an autorotation 80 yards from the normal landing pad. Pliot safely shut down the helicopter. Pilot reported no injuries to him or the two passengers.
As the FAA filed it
14 CFR PART 91.147 PILOT REPORTED DURING RETURNING FLIGHT TO LANDING PAD THAT THE HELICOPETR STARTED A MINOR SHAKE AND THE PILOT THOUGHT IT WAS BECAUSE OF A STUCK ENGINE VALVE. PILOT REPORTED TO HOME BASE TO HAVE A MECHANIC STANDING BY AT THE LANDING PAD. PILOTD STATED HE MAINTAINED 70 KNOTS AND 25INCHES OF MANIFOLD PRESSURE. PILOT REPORTS HE WAS DECENDING AT 300 FEET PER MINUTE AND HE STARTED PULLING POWER TO SLOW THE DECENT. THE ENGINE WAS TRAILING SMOKE BUT STILL RUNNING WITH A SMALL SPIKE IN RPM. PILOT REALIZED HE WOULD NOT BE ABLE MAKE THE LANDING PAD AND PERFORMED AN AUTOROTATION 80 YARDS FROM THE NORMAL LANDING PAD. PLIOT SAFELY SHUT DOWN THE HELICOPTER. PILOT REPORTED NO INJURIES TO HIM OR THE TWO PASSENGERS.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.