# NTSB IAD03LA051: Bell 47G, N17114, Lehighton, PA, March 28, 2003 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: March 28, 2003, 14:00 local (18:00 UTC) - Place: Lehighton, PA - Coordinates: 40.808334, -75.76139 - Nearby events: https://openairdocs.org/map.md?lat=40.8083&lon=-75.7614&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 25, 2003 - Report: Approved by Office Director - Parties: FAA/FSDO - NTSB case key (mKey): 56909 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD03LA051 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/56909/pdf - Page: https://openairdocs.org/ntsb/IAD03LA051 ## Probable cause The student pilot's improper flare, which resulted in a hard landing, and his continued flight operations with a known discrepancy. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Hard landing, landing - flare - improper, pilot in command (cause) - operation with known deficiencies in equipment - continued, pilot in command (cause) - Gear collapsed, landing ## Analysis During a solo flight, the student pilot/owner made a hard landing. He then wanted to practice full autorotations with his flight instructor, but the instructor refused because he was concerned that the hard landing may have caused damage to one of the skids. The student pilot then decided to practice running takeoffs and landings on his own, during which, one of the skids completely broke, and a main rotor blade severed the tailboom. ## Factual narrative On March 26, 2003, at 1400 eastern daylight time, a Bell 47G, N17114, was substantially damaged during landing at Jake Arner Memorial Airport (22N), Lehighton, Pennsylvania. The non-certificated pilot/owner was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the instructional flight conducted under 14 CFR Part 91. On April 2, 2003, the Federal Aviation Administration (FAA) received an anonymous letter, advising of an accident. It stated that the student pilot/owner was performing an autorotation when it "lost control and crashed hard." The student pilot/owner did not report the accident, and moved the wreckage to a hangar. On April 23, 2003, an FAA inspector performed an examination of the helicopter. According to the inspector, the tail rotor gearbox was separated from the tail boom, the landing skids were spread, the cabin Plexiglas was broken, and the main rotor was destroyed. The student pilot/owner of the helicopter was repeatedly contacted by the FAA, but was uncooperative and provided no further information regarding the helicopter or the accident. However, he did submit a written report to the NTSB. According to the report, the student pilot/owner said, "Sitting on runway. Skid broke." The student pilot/owner also reported that a main rotor blade had struck the tail boom. The student pilot's flight instructor was interviewed by an FAA inspector. According to the instructor, the student pilot flew the helicopter prior to a flight lesson and made a hard landing. Then the student pilot wanted to practice autorotations during the flight lesson, but the instructor did not feel it would be safe since one of the skids may have been weakened from the hard landing, and refused to fly. The student pilot then decided to fly on his own, and practiced several running takeoffs and landings, during which time, one of the skids completely broke. The student pilot then decided to move the helicopter to a hangar using a backhoe and chains. While moving the helicopter, he dropped it, and also struck the tail boom with the backhoe. The student pilot/owner reported the weather at the time of the accident as visibility 5 miles, winds from the north at 5 knots, a broken cloud layer at 2,500 feet, temperature 50 degrees F, and dewpoint 45 degrees F. According to Section 830.5 of the Federal Aviation Regulations (FAR), "The operator of any civil aircraft...shall immediately, and by the most expeditious means available, notify the nearest National Transportation Safety Board field office when an aircraft accident occurs." ## Aircraft - Registration: N17114 (not matched to a registry record) - Reported make and model: Bell 47G - Category: Helicopter - Serial number: 1227 - Engines: reciprocating - Damage: Substantial damage - Flight: Part 91 - Registered owner: Motolas Helicopter Services Inc. - Airworthiness certificate: Standard, Normal - Departed: 22N, Lehighton, PA - Destination: Lehighton - Flight plan: Unknown - Airport: 22N, Jake Arner Memorial ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim. ## Weather - Conditions: Day - Wind: 360° at 5 knots - Visibility: 5 statute miles - Lowest ceiling: 2,500 ft broken - Temperature: 50 °F, dew point 45 °F ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20030328030359A](https://openairdocs.org/incident/20030328030359A), Mar 28, 2003: Bell 47G, Lehighton, PA, Substantial damage. (-23) Student: helicopter private: airplane helicopter was running when skid broke, causing the helicopter to become unstable, which in turn caused damage to… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.