No fatalities

Helicopter Rolls Over During Emergency Landing After Go-Around on High-Altitude Pad

Morovis, PR, United States

On November 5, 2009, a ROBINSON HELICOPTER R44 operated by Universal Aviation Vertical Group was involved in an aviation accident near Morovis, PR. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s delayed attempt to go around. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

During a confined pinnacle approach to a landing pad at 1,391 feet, the pilot initiated a go-around, but the helicopter did not respond. Low rotor rpm warnings activated, leading to an emergency landing where the helicopter rolled over, damaging the rotor and tail boom.

Incident Details

A helicopter flight involving a pilot and three adult passengers resulted in a rollover during an emergency landing. The flight began with the pilot flying to a location at about 100 feet above sea level to pick up the passengers, then proceeded to a landing pad situated at an elevation of 1,391 feet above sea level.

Flight Sequence

According to the pilot, after one recognition pass, she commenced a "confined pinnacle approach" to the landing pad. While on short final, the pilot decided to execute a go-around and added power. However, the helicopter "did not respond accordingly." The low rotor rpm horn sounded and the low rotor rpm light illuminated. The pilot reported "no airspeed, no altitude" and continued with an emergency landing.

Emergency Landing and Rollover

Upon touchdown, with the right skid only partially on the landing pad, the helicopter rolled over to the left. This resulted in damage to the rotor system and tail boom. The pilot stated that winds were calm and the outside air temperature gauge indicated 24 degrees Celsius. She further noted that there were no preaccident mechanical anomalies with the helicopter.

Contributing factors

Causes

Pilot

Other contributing factors

Prop/rotor parameters — Not attained/maintained

Frequently asked questions

What happened in the 5 Nov 2009 ROBINSON HELICOPTER R44 accident near Morovis, PR?

During a confined pinnacle approach to a landing pad at 1,391 feet, the pilot initiated a go-around, but the helicopter did not respond. Low rotor rpm warnings activated, leading to an emergency landing where the helicopter rolled over, damaging the rotor and tail boom.

Were there any fatalities in the 5 Nov 2009 ROBINSON HELICOPTER R44 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 5 Nov 2009 involved a ROBINSON HELICOPTER R44, operated by Universal Aviation Vertical Group, at Morovis, PR.

What was the probable cause of the accident?

The pilot’s delayed attempt to go around.