NTSB Identification: ERA14LA108
14 CFR Part 91: General Aviation
Accident occurred Wednesday, January 29, 2014 in Memphis, TN
Aircraft: ENSTROM F 28A, registration: N24RB
Injuries: 2 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On January 29, 2014, about 1515 central standard time, an Enstrom F-28A helicopter, N24RB was substantially damaged during landing at General Dewitt Spain Airport (M01), Memphis, Tennessee. The flight instructor and private pilot were not injured. The airplane sustained substantial damage to a main rotor blade and the tail rotor driveshaft. The helicopter was registered to and operated by a flight school under the provisions of 14 Code of Federal Regulations Part 91 as an instructional flight. Visual meteorological conditions prevailed and no flight plan was filed for the local flight that departed M01 about 1340.

According to the flight instructor's written statement, they had practiced several running landings with simulated stuck anti-torque pedal approaches; each approach varied between the right pedal, left pedal, and neutral position. While the student completed some of the landings, the flight instructor guarded the cyclic and collective flight controls and, at times, took control of the aircraft and demonstrated the maneuver to completion. The flight instructor reported that during a low power steep approach the profile and alignment with the landing zone on final approach appeared "correct" and the speed before touchdown was approximately 10 mph. During landing, the landing skid made contact with the ground and collapsed. The helicopter came to rest in forward pitch attitude.

Postaccident examination of the helicopter by a Federal Aviation Administration inspector (FAA) revealed substantial damage to a main rotor blade and the tail rotor drive shaft. Further examination of the landing skid revealed a broken skid tube clamp.

The landing skid tube clamp was retained by the NTSB for further examination.

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