# NTSB DEN08CA046: Robinson R22 Beta, N844SH, Pueblo, CO, December 21, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: December 21, 2007, 11:00 local (18:00 UTC) - Place: Pueblo, CO - Coordinates: 38.288887, -104.484443 - Nearby events: https://openairdocs.org/map.md?lat=38.2889&lon=-104.4844&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report January 31, 2008 - Report: Approved by Office Director - Parties: FAA Flight Standards District Office - NTSB case key (mKey): 67334 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN08CA046 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67334/pdf - Page: https://openairdocs.org/ntsb/DEN08CA046 ## Probable cause the pilot's failure to maintain aircraft control resulting in a hard landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Hard landing, landing - flare/touchdown - aircraft control - not maintained, pilot in command (cause) - autorotation - simulated, pilot in command ## Analysis According to the flight instructor, the commercial student was performing a hover autorotation from a skid height of one foot. The instructor wrote that yaw was minimal and the helicopter drifted slightly to the left. The helicopter touched down left skid first, then briefly hopped to the left. The student then taxied the helicopter to parking. A postflight examination of the helicopter revealed substantial damage. The instructor reported no anomalies with any of the helicopter systems. ## Factual narrative According to the written statement submitted by the flight instructor, the commercial student was performing a "hover autorotation from a skid height of one foot." The instructor wrote that yaw was minimal and the helicopter drifted slightly to the left. The helicopter "touched down "left skid first, then briefly hopped to the left. The student then taxied the helicopter to parking. A postflight examination of the helicopter revealed that the vertical frame tube was bowed and the bottom cross member was bent. The instructor reported no anomalies with any of the helicopter systems. ## Aircraft - Registration: [N844SH](https://openairdocs.org/deregistered/N844SH-2011-08-30), registration cancelled 2011-08-30, S/N 3824, built 2005 (OpenAirDocs) - Reported make and model: Robinson R22 Beta - Registry model: [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta) (registry code 7640110) (OpenAirDocs) - Registry engine: [Lycoming O-360 series](https://openairdocs.org/engine/lycoming-o-360-series) (registry code 41575, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 3824 - Airframe hours: 2648 - Engines: Lycoming O-360-J2A 145 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Silver State Helicopters LLC - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, December 1, 2007 - Departed: K1V6, Walsenburg, CO - Destination: KPUB, Pueblo, CO - Airport: KPUB, Pueblo Memorial Airport ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 36; injuries: none; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: helicopter; medical: class 2, without waivers/limitations; last flight review December 1, 2007; seat: left; flight hours: 1,177 total, 403 in this make and model, 348 in the last 90 days, 91 in the last 30 days, 6 in the last 24 hours - Pilot; age 41; injuries: none; private; medical: class 2, without waivers/limitations; last flight review October 1, 2007; seat: right; flight hours: 124 total, 32 in this make and model, 45 in the last 90 days, 17 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 290° at 12 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 52 °F, dew point 19 °F - Altimeter: 29.62 inHg - Observed at: KPUB, 1 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Incident 20071221830789I](https://openairdocs.org/incident/20071221830789I), Dec 21, 2007: Robsin R22BETA, Pueblo, CO, Minor damage. (-23) On December 21, 2007 at approximately 1100 MDT, N844SH a robertson/R22 beta ii, helicopter experienced a hard landing at the Pueblo airport (pub), Pueblo… ## Other investigations on N844SH (1) 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. - [NTSB WPR11CA031](https://openairdocs.org/ntsb/WPR11CA031), Oct 29, 2010: Robinson Helicopter R22 Beta (N844SH), Prescott, AZ, substantial damage. Probable cause: The student pilot's failure to maintain the proper airspeed and the certificated flight instructor's inadequate supervision and delayed remedial action during a practice autorotation, which resulted… 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.