20060523008539I

Incident · Minor damage

FAA incident report · Robsin R44 · Fresno, CA · May 23, 2006

Date
May 23, 2006 · 09:40 local
Place
Fresno, CA
Airport
Fresno-Chandler Downtown Airport
Phase of flight
Descent
Operating rules
General operating rules (Part 91)
Damage
Minor damage
Aircraft
N667SA
Reported as
Robsin R44
People aboard
2
Fatal injuries
0
Pilot’s flight hours
150 total16 in this make and model16 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) N667SA was conducting helicopter flight training at the time of the incident. The CFI demonstrated the proper recovery procedures for loss of tail rotor effectiveness (lte) to the commercially rated student and then asked him to perform the maneuver. The flight instructor reported that during the initiation of the recovery from lte, the student chopped the throttle instead of gradually decreasing power to control the yaw. An eyewitness confirmed the instructors account of the throttle being chopped versus being gradually reduced. The helicopter immediately descended nose low and struck the forward skids on the runway, breaking them off. The instructor took the controls and attempted to stabilize the aircraft and the aircraft rocked backwards onto the rear skids and came to a stop. There were no injuries to the crew and only minor damage to the aircraft.

As the FAA filed it

(-23) N667SA WAS CONDUCTING HELICOPTER FLIGHT TRAINING AT THE TIME OF THE INCIDENT. THE CFI DEMONSTRATED THE PROPER RECOVERY PROCEDURES FOR LOSS OF TAIL ROTOR EFFECTIVENESS (LTE) TO THE COMMERCIALLY RATED STUDENT AND THEN ASKED HIM TO PERFORM THE MANEUVER. THE FLIGHT INSTRUCTOR REPORTED THAT DURING THE INITIATION OF THE RECOVERY FROM LTE, THE STUDENT CHOPPED THE THROTTLE INSTEAD OF GRADUALLY DECREASING POWER TO CONTROL THE YAW. AN EYEWITNESS CONFIRMED THE INSTRUCTORS ACCOUNT OF THE THROTTLE BEING CHOPPED VERSUS BEING GRADUALLY REDUCED. THE HELICOPTER IMMEDIATELY DESCENDED NOSE LOW AND STRUCK THE FORWARD SKIDS ON THE RUNWAY, BREAKING THEM OFF. THE INSTRUCTOR TOOK THE CONTROLS AND ATTEMPTED TO STABILIZE THE AIRCRAFT AND THE AIRCRAFT ROCKED BACKWARDS ONTO THE REAR SKIDS AND CAME TO A STOP. THERE WERE NO INJURIES TO THE CREW AND ONLY MINOR DAMAGE TO THE AIRCRAFT.